Herbicidal substituted 3-aryl-pyrazoles

FIELD OF THE INVENTION
The field of the invention contemplated herein pertains to herbicidal compounds generically defined by the above title, to compositions containing same and processes for preparing said compounds.
BACKGROUND OF THE INVENTION
Various substituted 3-aryl-pyrazole type compounds are known in the literature. Such compounds have various utilities, e.g., as chemical intermediates, pharmaceuticals and herbicides.
Among the substituted 3-aryl-5-(halo)alkyl-pyrazoles in the art are those having a variety of substituent radicals on the aryl and/or pyrazole moieties of the compound, e.g., alkyl, carboxyl, alkoxycarbonyl, formyl, phenyl and phenyl substituted with various groups such as alkyl, halo or nitro groups, etc. For example, compounds of this type are known wherein the aryl moiety is a substituted or unsubstituted phenyl radical, in which the substituent radicals are alkyl, cycloalkyl, alkaryl, halogen, trifluoromethyl, etc., and the pyrazolyl radical is substituted in various positions on the nitrogen or carbon atoms with alkyl, halogen, alkoxy, hetero-cycles, S(O).sub.n R members, wherein n is 0-2 and R may be a variety of radicals such as those substituted on the aryl or pyrazole moieties.
Compounds of the above type having utility as herbicides, typically require application rates as high as five or ten or more kilograms per hectare to achieve adequate weed control. For example, Japanese patent application No. 1-225724 by Miura et al. discloses a number of 3-phenyl pyrazole derivatives most of which required a dose of 5 kg/hectare for adequate weed control in both pre-emergent and post emergent tests. In particular, 3-phenyl pyrazole derivatives having alkyl or haloalkyl substitutions in the 4 position of the pyrazole ring were disclosed and exemplified by two compounds having 4-methyl substitutions and in the 5 position either --SCH.sub.3 (compound 360) or --SOCH.sub.3 (compound 570). Only one of these, compound No. 360, was tested for weed control and a dose of 5 kg/hectare was required for effective post-emergent weed control. At 0.8 Kg/hectare, weed control was ineffective.
Thus, in accordance with the present invention, it has been discovered that a novel class of 4-substituted alkyl and haloalkyl arylpyrazole-type compounds have uniquely and surprisingly high phytotoxic unit activity against a spectrum of weeds, including narrow-leaf and broadleaf weeds yet maintain a high degree of safety in a plurality of crops, especially small grains and/or row crops such as wheats, barley, corn, soybeans, peanuts, etc.
The 1-(halo)alkyl-3-(substituted)aryl-4-(halo)alkyl-5-haloalkylpyrazoles described herein are new.
SUMMARY OF THE INVENTION
This invention relates to herbicidally-active compounds, compositions containing these compounds, processes for making them and herbicidal methods of using the same.
The herbicidal compounds of this invention are characterized by the structure of Formula I ##STR1## and agriculturally-acceptable salts and hydrates thereof wherein
R.sub.1 is independently C.sub.1-8 alkyl; C.sub.3-8 cycloalkyl, cycloalkenyl, cycloalkylalkyl, or cycloalkenylalkyl; C.sub.2-8 alkenyl or alkynyl; benzyl; or said R.sub.1 members substituted with halogen, amino, nitro, cyano, hydroxy, alkoxy, alkylthio, ##STR2##
R.sub.2 is C.sub.1-6 haloalkyl;
R.sub.3 is C.sub.1-6 alkyl, C.sub.1-6 haloalkyl, CHO or CH.sub.2 OH;
R.sub.4 members are independently an R.sub.1 member, thioalkyl, polyalkoxyalkyl, carbamyl, halogen, amino, nitro, cyano, hydroxy, C.sub.3-10 heterocycle contain O, S(O).sub.m and/or NR.sub.18 hetro atoms, C.sub.6-12 aryl, aralkyl or alkaryl, ##STR3## or two R.sub.4 groups may be combined through a saturated and/or unsaturated carbon, --(C.dbd.X)--, or hetero O, S(O).sub.m and/or NR.sub.18 linkage to form a cyclic ring having up to 9 ring members which may be substituted with an R.sub.1 member, halogen, amino, nitro, cyano, hydroxy, aryl, aralkyl, alkaryl, ##STR4##
X is O, S(O)hd m, NR.sub.19 or CR.sub.2 OR.sub.21 ;
Y is O, S(O).sub.m or NR.sub.22 ;
R.sub.8-22 are hydrogen, C.sub.1-8 alkyl, C.sub.3-8 cycloalkyl, cycloalkenyl, cycloalkylalkyl, or cycloalkenylalkyl, C.sub.2-8 alkenyl or alkynyl, benzyl, or said R.sub.1 members substituted with halogen, amino, nitro, cyano, hydroxy, alkoxy, alkylthio, halogen, amino, nitro, cyano, hydroxy, aryl, aralkyl, alkaryl, carboxyl, alkoxyalkyl, alkylamino, dialkylamino, alkoxy, or carbamyl;
m is 0-2 and
n is 1-5.
A preferred subgenus of the substituted-arylpyrazolyl compounds in this invention are those according to Formula II: ##STR5## and agriculturally-acceptable salts and hydrates thereof wherein
R.sub.1 is C.sub.1-6 alkyl;
R.sub.2 is C.sub.1-6 haloalkyl;
R.sub.5 and R.sub.6 are independent halogen; and
R.sub.7 is ##STR6##
Particularly preferred compounds of this invention are compounds according to Formula II and agricultuarlly-acceptable salts and hydrates thereof wherein
R.sub.1 is CH.sub.3 ;
R.sub.2 is CF.sub.3 ;
R.sub.3 is CH.sub.3, CH.sub.2 F or CF.sub.2 H;
R.sub.5 is F;
R.sub.6 is Cl; and
R.sub.7 is ##STR7##
Particularly preferred species of this invention include the following:
2-chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid, 1-methylethyl ester;
2-chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid ethyl ester;
2-chloro-5-�4-difluoromethyl)-1-methyl-5-trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid, 1-methylethyl ester; and
2-chloro-4-fluoro-5-�4-(fluoromethyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester.
These compounds collectively provide out-standing control of resistant broadleaf weeds such as pigweed, cocklebur, velvetleaf and hemp sesbania in various crops such as corn, soybean and nuts and in forestry against trees and vines. Other of the compounds of this invention exhibit excellent herbicidal effect against weeds in other crops such as wheat and barley.
Some of the compounds of the present invention may have more than one possible stereoisomer and these stereoisomers may differ in herbicidal efficacy. The structures illustrated are intended to include all possible stereoisomers.
The above compounds may be suitably applied in a variety of application modes, e.g., pre-emergent and/or postemergent, surface applied, pre-plant incorporated, etc.
Another aspect of this invention relates to processes for preparing the compounds according to Formulae I and II and their precursors, intermediates and/or starting materials. Process I details the conversion of 4-halopyrazoles to 4-alkylpyrazoles and related 4-substituted pyrazoles via a pyrazole anion intermediate. The anionic intermediate such as the 4-lithiopyrazole obtained from treatment of a 4-bromopyrazole with an alkyllithium reagent is important for the success of this process step. Although anions of pyrazoles are known for the 3 and 5 positions of the pyrazole ring, anions of the 4 position of 5-haloalkylpyrazoles are novel (Heterocycles (1994), 37, 2087-2147). Pyrazoles having a hydrogen substituent in the four position do not provide 4-lithiopyrazoles on treatment with alkyllithium bases. The halogen in the four position was required for this transformation via a halogen-metal exchange. The anionic intermediate must be treated with a suitable electrophile prior to regiochemical scrambling of the pyrazole anion in order to obtain 4-substituted pyrazoles as the major product.
Process II describes a cyclocondensation route towards 4-alkylpyrazoles from a ketovinylether of Formula C and either hydrazine or an alkylhydrazine. Cyclocondensation of allyl substituted diketones with hydrazine to give 4-allyl-5-trifluoromethylpyrazoles is known (Synthesis, 1986, 340), however, routes towards 3-aryl-4-alkyl-5-trifluoromethylpyrazoles were previously unknown. The cyclocondensation described in Process II is a unique method utilizing ketovinylethers of Formula C to provide direct access to compounds of Formula I.
Process III describes transformations of the novel compounds of Formula I to various derivatives having desired carbon substitutions in the 5-position of the phenyl ring. Process IV describes the conversion of new compounds of Formula I (where R.sub.3 is CHO) to 4-fluoromethylpyrazoles and 4-difluoromethylpyrazoles. These process aspects will be discussed in more detail below.
Other aspects of this invention relate to herbicidal compositions containing the compounds of Formulae I and II and to herbicidal methods of using those compositions to control undesirable weeds.
It is further within the purview of this invention that the substituted-arylpyrazole compounds of Formulae I and II be formulated in compositions containing other herbicidal compounds as co-herbicides, e.g., acetamides, esp., acetanilides, thiocarbamates, ureas, sulfonylureas, sulfonamides, imidazolinones, benzoic acid and its derivatives, diphenyl ethers, salts of glyphosate, etc.
Other additaments may be included in such herbicidal formulations as desired and appropriate, e.g, plant disease control agents, such as fungicides, insecticides, nematicides and other pesticides.
As used herein, the terms "alkyl", "alkenyl", "alkynyl" when used either alone or in compound form, e.g., haloalkyl, haloalkenyl, alkoxy, alkoxyalkyl, etc., are intended to embrace linear or branched-chain members. Preferred alkyl members are the lower alkyls having from 1 to 4 carbon atoms and preferred alkenyl and alkynyl members are those having from 2 to 4 carbon atoms.
The term "haloalkyl" is intended to mean alkyl radicals substituted with one or more halogen (chloro, bromo, iodo or fluoro) atoms; preferred members of this class are those having from 1 to 4 carbon atoms, especially the halomethyl radicals, e.g., trifluoromethyl. In polyhaloalkyl members, the halogens can all be the same or mixed halogens.
Representative, non-limiting alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl and cycloalkenylalkyl members include the following:
Methyl, ethyl, the isomeric propyls, butyls, pentyls, hexyls, heptyls, octyls, nonyls, decyls, etc.; vinyl, allyl, crotyl, methallyl, the isomeric butenyls, pentenyls, hexenyls, heptenyls, octenyls; ethynyl, the isomeric propynyls, butynyls, pentynyls, hexynyls, etc.; the alkoxy, polyalkoxy, alkoxyalkyl and polyalkoxyalkyl analogs of the foregoing alkyl groups, e.g., methoxy, ethoxy, propoxys, butoxys, pentoxys and hexoxys and corresponding polyalkoxys and alkoxyalkyls, e.g., methoxymethoxy, methoxyethoxy, ethoxymethoxy, ethoxyethoxy, methoxymethyl, methoxyethyl, ethoxymethyl, ethoxyethyl, propoxymethyl, isopropoxymethyl, butoxymethyl, isobutoxymethyl, tertbutoxymethyl, pentoxymethyl, hexoxymethyl, etc., cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, etc.; the isomeric cyclopentenes, cyclohexenes and cycloheptenes having mono- or di-unsaturation; representative aryl, aralkyl and alkaryl groups include phenyl, the isomeric tolyls and xylyls, benzyl, naphthyl, etc.
Representative mono-, di- and tri- haloalkyl members include: chloromethyl, chloroethyl, bromomethyl, bromoethyl, iodomethyl, iodoethyl, chloropropyl, bromopropyl, iodopropyl, 1,1,-dichloromethyl, 1,1-dibromomethyl, 1,1-dichloropropyl, 1,2-dibromopropyl, 2,3-dibromopropyl, 1-chloro-2-bromoethyl, 2-chloro-3-bromopropyl, trifluoromethyl, trichloromethyl, etc.
Representative heterocyclic members include: alkylthiodiazolyl; piperidyl; piperidylalkyl; dioxolanylalkyl, thiazolyl; alkylthiazolyl; benzothiazolyl; halobenzothiazolyl; furyl; alkyl-substituted furyl; furylalkyl; pyridyl; alkylpyridyl; alkyloxazolyl; tetrahydrofurylalkyl; 3-cyanothienyl; thienylalkyl; alkyl-substituted thienyl; 4,5-polyalkylene-thienyl; piperidinyl; alkylpiperidinyl; pyridyl; di- or tetrahydropyridinyl; alkyltetrahydromorpholyl; alkylmorpholyl; azabicyclononyl; diazabicycloalkanyl, benzoalkylpyrrolidinyl; oxazolidinyl; perhydrooxazolidinyl; alkyloxazolidyl; furyloxazolidinyl, thienyloxazolidinyl, pyridyloxazolidinyl, pyrimidinyloxazolidinyl, benzooxazolidinyl, C.sub.3-7 spirocycloalkyloxazolidinyl, alkylaminoalkenyl; alkylideneimino; pyrrolidinyl; piperidonyl; perhydroazepinyl; perhydroazocinyl; pyrazolyl; dihydropyrazolyl; piperazinyl; perhydro-1,4-diazepinyl; quinolinyl, isoquinolinyl; di-, tetra- and perhydroquinolyl - or - isoquinolyl; indolyl and di- and perhydroindolyl and said heterocyclic members substituted with radicals such as defined in Formula I.
By "agriculturally-acceptable salts" of the compounds defined by the above formulae is meant a salt or salts which readily ionize in aqueous media to form a cation or anion of said compounds and the corresponding salt anion or cation, which salts have no deleterious effect on the herbicidal properties of a given herbicide and which permit formulation of various mixtures, e.g., herbicide-antidote compositions without undue problems of mixing, suspension, stability, applicator equipment use, packaging, etc.
By "herbicidally-effective" is meant the amount of herbicide required to effect a meaningful injury or destruction to a significant portion of affected undesirable plants or weeds. Although of no hard and fast rule, it is desirable from a commercial viewpoint that 80-85% or more of the weeds be destroyed, although commercially significant suppression of weed growth can occur at much lower levels, particularly with some very noxious, herbicide-resistant plants.
DETAILED DESCRIPTION OF THE INVENTION
The compounds according to this invention are suitably prepared by a variety of processes as will be described below. The phenylpyrazoles of Formula A required for preparation of compounds of Formula I by Process I were obtained as previously described in U.S. Pat. No, 5,281,571. Compounds of Formula B were either known in the art or obtained by the methods described in copending U.S. Ser. Nos. 08/277,724 and 08/277,725 both filed on Jul. 20, 1994.
Process I
This process describes the preparation of compounds of Formula I from compounds of Formula A wherein Z is chlorine, bromine or iodine. ##STR8##
In this process description, compounds of Formula I are prepared by treatment of compounds of Formula A with a suitable base, sequential addition of bases or combination of bases followed by treatment with an alkylating agent or electrophile. Any inert solvent may be used in this reaction that does not markedly hinder the reaction from proceeding. Such solvent include, but are not limited to, ethers, cyclic ethers, polyethers, hydrocarbons and aromatic hydrocarbons. The base may be chosen from any number of alkyl lithium, aryllithium, Grignard or other reagents capable of replacing the halogen Z group of Formula A. In addition, base combinations can be used to improve overall conversion or yield. Acidic functionality in the substrate which would otherwise be incompatable with this transformation, such as compounds of Formula A wherein R.sub.4 is a COOH group, can be protected by formation of a salt such as the lithium, sodium or magnesium carboxylate salts. This can be achieved by addition of excess base or initial formation of the carboxylate salt with bases such as, but not limited to, sodium hydride, lithium hydride, alkyllithium, aryllithium, Grignard reagents, etc. The amount of base or combination of bases can range from less than one molar equivalent to an excess. The intermediate anionic or dianionic species obtained after addition of base is treated with an alkylating agent or suitable electrophile such as methyl iodide, dimethylsulfoxide, dimethylformamide, etc. The amount of alkylating agent or suitable electrophile can range from less than one molar equivalent to an excess. Reaction temperature is in the range of -150.degree. C. to 100.degree. C., preferably -110.degree. C. to 0.degree. C. The reaction period may be chosen from the range of a few minutes to several weeks depending on the amounts of reagents, reaction temperature, etc. After completion, the reaction mixture is treated with water or aqueous acid and the product is isolated by a method such a crystallization or solvent extraction. If necessary, the product is purified by standard methods.
Process II
This process describes the preparation of compounds of Formula I by a multi-step sequence from alkyl aryl ketones of Formula B. The ketone B is converted to a Vinyl ether C wherein R is an alkyl or aryl group followed by either direct conversion to a compound of Formula I or a stepwise formation of pyrazole D followed by alkylation to give a compound of Formula I. ##STR9##
The alkyl aryl ketone B can be converted to a ketal by any of the methods known in the art. This is typically accomplished by addition of an alcohol or orthoformate to the ketone in the presence of an acid or acid catalyst. A preferred method is treatment of B with trialkyl orthoformate in the presence of a strong acid such as, but not limited to, mineral acid, sulfuric acid, gaseous HCl, etc. Removal of water from the reaction mixture will improve the reaction rate and yields of ketals. The ketal is treated with a haloalkyl anhydride in the presence of pyridine following the method of Hojo, et. al. (Synthesis, 1986, p. 1013). A vinyl ether C is obtained which can be treated with hydrazine or a (halo)alkylhydrazine in any suitable solvent to give pyrazole D or a compound of Formula I, respectively. The reaction temperature for this cyclocondensation step is in the range of -78.degree. C. to 200.degree. C., preferably 10.degree. C. to 120.degree. C. The reaction period may be chosen from the range of a few minutes to several weeks depending on the Mounts of reagents, reaction temperature, etc. The product is isolated after completion of the reaction by filtration and/or concentration of the reaction mixture. If necessary, the product is purified by standard methods such as extraction, crystallization, column chromatography, etc.
In the case of addition of hydrazine to compounds of Formula C, the resultant pyrazole of Formula D may be treated with an alkylating agent to obtain compounds of Formula I. The alkylating agents suitable for this reaction include methyl iodide, allyl bromide, dimethylsulfate, etc. Preferred solvents are toluene, dimethylsulfoxide, acetone dimethylformamide, dioxane, etc. The reaction may be carried out with or without a base. In cases in which a base is employed, alkali metal carbonates or hydroxides such as sodium carbonate or sodium hydroxide may be used. Reaction temperature is in the range of -78.degree. C. to 200.degree. C., preferably 10.degree. C. to 120.degree. C. The reaction period may be chosen from the range of a few minutes to several weeks depending on the amounts of reagents, reaction temperature, etc. The product is isolated after completion of the reaction by filtration and/or concentration of the reaction mixture. If necessary, the product is purified by standard methods such as extraction, crystallization, column chromatrography, etc.
Process III
This process describes the conversion of compounds of Formula II wherein R.sub.7 is a carboxylic acid, to various derivatives of Formula I compounds such as benzyl esters, amides, benzyl alcohols, benzyl halides or benzyl (thio)ethers (R.sub.7 is an ester, amide, hydroxyalkyl, haloalkyl, alkoxyalkyl or thioalkyl radical). The compounds of Formula II, wherein R.sub.7 is COOH, require starting materials obtained by either Process I or II. ##STR10##
Compounds of Formula E, wherein R is YR.sub.10 or NR.sub.11 R.sub.12, are obtained from compounds of Formula I, wherein R.sub.7 is COOH, by one of the standard methods for preparation of derivatives of carboxylic acids. This process step is an esterification or an amide-forming reaction. This may be accomplished directly from carboxylic acid or its alkali metal salt. The esterification can be carried out by using an excess of the alcohol corresponding to the objective ester in the presence of a mineral acid (e.g., sulfuric acid). The amide derivatives can be prepared by treating the carboxylic acid with the desired amine either neat or in a suitable solvent. The esterification or amide-forming reactions can also be carried out in the presence of an inert solvent and a dehydrating agent.
Alternatively, compounds of Formula II, wherein R.sub.7 is COOH, can be converted to an acid halide or anhydride and treated with an alcohol or amine. Preparation of the acid halide is carried out in the presence of a halogenating agent such as, but not limited to, thionyl chloride, phosphorus pentachloride, oxalyl chloride, etc, with or without an inert solvent. Any inert solvent which does not interfere with the reaction may be employed. A catalytic amount of an amine base such as triethylamine, pyridine or dimethylformamide or the like may be added for the purpose of promoting this reaction. The reaction temperature is in the range of -20.degree. C. to the boiling point of the solvent used. The reaction period ranges from several minutes to 48 hours depending upon the amounts of reactants used and the reaction temperature. After completion of the reaction, the excess halogenating reagent and solvent(s) are removed from the reaction product by evaporation or distillation. The resultant acid halide may be subjected to an amine or alcohol directly and purified by the usual means.
The acid halide is treated with an alcohol or amine to give a compound or Formula E. Any inert solvent may be employed and a catalytic amount of an amine base such as triethylamine, pyridine or dimethylformamide or the like may be added for the purpose of promoting this reaction. The reaction temperature is in the range of -20.degree. C. to the boiling point of the solvent used. The reaction period ranges from several minutes to 48 hours depending upon the amounts of reactants used and the reaction temperature. The product is isolated after completion of the reaction by filtration and/or concentration of the reaction mixture. If necessary, the product is purified by standard methods such as extraction, crystallization, column chromatography, etc.
Compounds of Formula F can be prepared by reduction of the carboxylic acid group of compounds of Formula I using a reducing agent such as diborane, borane-tetrahydrofuran, borane complex, lithium aluminum hydride, aluminum hydride, etc. Conversion of the benzyl alcohol to a benzyl halide of Formula G can be carried out with any of a number of halogenated reagents such as hydrogen halides or inorganic acid halides, including phosphorus tribromide, thionyl chloride, phosphorus oxychoride, phosphorus pentachloride, hydrogen bromide, hydrogen iodide, etc. Compounds of Formula G can be converted to compounds of Formula H by displacement of the halogen radical X by a suitable nucleophile. Formation of products of Formula H can be carried out by treatment of compounds of Formula G with an alkoxide, thioalkoxide, amine, alkyl or aryl anion etc., or an alcohol, mercaptan, amine, etc. in the presence of a base in any suitable solvent. The preferred solvents are dimethylsulfoxide, acetone dimethylformamide, dioxane, etc. The base may be an organic base (such as a trialkylamine or another organic amine) or an inorganic base (an alkali carbonate such as potassium carbonate or sodium carbonate). Reaction temperature is in the range of 0.degree. C. to 150.degree. C., preferably 10 to 100.degree. C. The reaction period may be chosen from the range of a few minutes to several weeks depending on the amounts of reagents, reaction temperature, etc. The product is isolated after completion of the reaction by filtration and/or concentration of the reaction mixture. If necessary, the product is purified by standard methods such as extraction, crystallization, column chromatography, etc.
PROCESS IV
This section describes a process for the preparation of compounds of Formulae J, K and L from compounds of Formula I wherein the R.sub.3 radical is a CHO group. The compounds of Formula I wherein R.sub.3 is a CHO group are obtained by Process I. ##STR11##
In this process, compounds of Formula J are prepared by fluorination of the aldehyde group of compounds of Formula I with a suitable fluorinating agent. Any solvent may be employed which does not interfer with the course of the reaction. Fluorinating reagents include, but are not limited to, diethylaminosulfur trifluoride (DAST), dialkylaminosulfur trifluorides, SF.sub.4, HF, SeF.sub.4, PhSF.sub.3, MoF.sub.6, etc. Compounds of Formula K can be prepared by reduction of the aldehyde group of compounds of Formula I (R.sub.3 is CHO) using a reducing agent such as diborane, borane-tetrahydrofuran, borane complex, lithium aluminum hydride, aluminum hydride, etc. Compounds of Formula K are prepared by fluorination of compounds of Formula J with a suitable fluorinating agent. Fluorinating reagents include, but are not limited to, diethylaminosulfur trifluoride (DAST), dialkylaminosulfur trifluorides, SF.sub.4, HF, SeF.sub.4, PhSF.sub.3, MoF.sub.6, etc. Any of the products J, K or L are isolated after completion of the reaction by filtration and/or concentration of the reaction mixture. If necessary, the product is purified by standard methods such as extraction, crystallization, column chromatography, etc.
Further derivatives of compounds obtained by the above Processes I-IV can be prepared by any of the processes or methods outlined in U.S. Pat. No. 5,281,571 which is incorporated by reference.

The following Examples 1-15 describe specific working embodiments for the preparation of representative compounds according to this invention.
Examples 1 through 3 describe specific working embodiments of Process I.
EXAMPLE 1
Preparation of 3-(2,5-Difluorophenyl)-1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazole.
A solution of 10 g of 4-bromo-3-(2,5-difluorophenyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazole in 250 mL anhydrous THF was cooled to -78.degree. C. and stirred with an overhead stirrer. The cold solution was treated with 12 mL of 2.5M n-butyllithium in hexanes never allowing the temperature to exceed -70.degree. C. After stirring for 5 minutes, 1.9 mL of methyl iodide was added quickly. The cooling bath was removed and the solution allowed to warm to room temperature. The solution was diluted with diethyl ether and the combined organic extracts were washed twice with brine, dried over anhydrous magnesium sulfate and concd in vacuo. Chromatographic purification (silica, 5% ethyl acetate in hexanes) gave 5.8 g (72.4%) of 3-(2,5-difluorophenyl)-1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazole as an oil; 1HNMR (CDCl.sub.3) .delta.2.0 (quintet, 3H, J=2.1 Hz), 3.9 (d, 3H, J=1.2 Hz), 6.9-7.1 (m, 3H). Anal. Calcd for C13H9F5N2: C, 52.18; H, 3.28; N, 10.14. Found: C, 52.20; H, 3.30; N, 10.11.
EXAMPLE 2
Preparation of 2-Chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid.
A solution of 30 g of 5-�4-bromo-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-2-chloro-4-fluorobenzoic acid in 800 mL of anhydrous THF was stirred with a mechanical stirrer and treated with 3.36 g of 80% NaH. The stirred mixture was kept under a nitrogen atmosphere and heated to 60.degree. C. for one hour. After formation of the sodium carboxylate salt, the mixture was cooled to -110.degree. C. and 32.3 mL of 2.5 M n-butyllithium in hexanes was added never allowing the temperature to exceed -100.degree. C. The reaction was stirred at -110.degree. C. for ten minutes, subsequently treated with 9.3 mL of methyl iodide and allowed to warm to room temperature. The mixture was quenched with 3N HCl and the volatiles removed. A precipitate formed which was collected and recrystallized from ethanol/water to give 24.5 g Of a white solid: mp 155.0.degree. C.; .sup.1 HNMR (CDCl.sub.3) .delta.2.06 (m, 3H), 4.01 (s, 3H), 7.27 (d, 1H, J=9.6 Hz), 8.17 (d, 1H, J=7.6 Hz). Anal. Calcd for C.sub.13 H.sub.9 O.sub.2 Cl.sub.1 N.sub.2 F.sub.4 : C, 46.38; H, 2.69; N, 8.32. Found: C, 46.46; H, 2.65; N, 8.33.
EXAMPLE 3
Preparation of 2-Chloro-4-fluoro-5-�4-formyl-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid.
To a mechanically stirred solution of 10 g of 5-�4-bromo-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-2-chloro-4-fluorobenzoic acid in 400ml of anhydrous tetrahydrofuran under a nitrogen atmosphere was added 1.0 g of 95% sodium hydride. After the foaming subsided, the reaction was stirred and heated to 60.degree. C. for one hour to ensure complete anion formation of the acid. The reaction was cooled to -110.degree. C. with vigorous stirring and a 10.8 mL of 2.5M n-butyl lithium in hexanes was added maintaining the temperature below -100.degree. C. As soon as the addition of n-butyl lithium was completed, 10 mL of dimethyl formamide was added and the solution was allowed to warm to -20.degree. C. The reaction was then quenched with 3N HCl, and most of the volatiles were removed from the reaction mixture. The precipitate was filtered and recrystalized from carbon tetrachloride to give 3.0 g of 2-chloro-4-fluoro-5-�4-formyl-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid: mp 163.degree. C.; .sup.1 HNMR (CDCl.sub.3) ppm: 9.82 (s, 1H), 7.89 (d, 1H, J=7.6), 7.07 (d, 1H, J=9.2), 3.39 (s, 3H). .sup.19 FNMR (CDCl.sub.3) ppm: -57.78, -107.41.
Examples 4 through 7 describe specific working embodiments of Process II.
EXAMPLE4
Preparation of 1-Chloro-4-(1,1-diethoxypropyl)benzene.
A solution of 15.0 g of p-chloropropiophenone and 7.8 mL of dry EtOH was treated with 22.0 mL of triethyl orthoformate. Gaseous HCl was bubbled through the solution until saturation and the reaction mixture heated to reflux overnight. An additional 14.8 mL of triethyl orthoformate was added and the reaction mixture allowed to cool to room temperature. The cooled mixture was washed with 10 % Na.sub.2 CO.sub.3, extracted with diethyl ether and concd in vacuo to afford 19.0 g (88%) of a crude orange/yellow oil. The oil was distilled and a fraction collected (75.degree.-96.degree. C., 100 mtorr) which contained 13.4 g of 1-chloro-4-(1,1-diethoxypropyl)benzene: .mu. (23,D) 1.5612; .sup.1 HNMR (CDCl.sub.3) a 0.56 (t, 3H, 7.5 Hz), 1.19 (t, 6H, 7.0 Hz), 1.89 (q, 2H, 7.5 Hz), 3.36 (m, 4H), 7.28 (d, 2H, 8.5 Hz), 7.42 (d, 2H, 8.5 Hz). Anal. Calcd for C.sub.13 H.sub.19 O.sub.2 Cl: C, 64.32;H, 7.89. Found: C, 64.09; H, 7.81.
EXAMPLE 5
Preparation of 4-(4-Chlorophenyl)-4-ethoxy-1,1,1-trifluoro-3-methyl-3-buten-2-one.
A solution of 2.0 g of 1-chloro-4-(1,1-diethoxypropyl)benzene and 2.5 mL of CH.sub.2 Cl.sub.2 was treated with 1.45 mL of pyridine. The solution was cooled to 0.degree. C. and treated with 5.5 mL of (CF.sub.3 CO).sub.2 O in 2.5 mL of CH.sub.2 Cl.sub.2. After heating overnight at reflux, the reaction mixture was cooled, diluted with CH.sub.2 Cl.sub.2 and 12 mL of ice cold water was added. The organic layer was seperated and washed with 20 mL of 1N HCl, followed by a washing with 20 mL, of 10% Na.sub.2 CO.sub.3 and two washings with 20 mL of water. The organic layer was dried over Na.sub.2 SO.sub.4 and concd in vacuo to yield 1.69 g of a dark brown oil. Chromatographic purification (silica, 10% ethyl acetate in hexanes) yielded 1.0 g of a yellow oil. Bulb to bulb distillation gave 0.45 g of a very pure light yellow oil: .mu. (23,D) 1.5137; major geometric isomer: .sup.1 HNMR (CDCl.sub.3) .delta.1.22 (t, 3H, 7.0Hz), 1.70 (s, 3H), 3.64 (q, 2H, 7.0 Hz), 7.30 (d, 2H, 8.3 Hz), 7.46 (d, 2H, 8.4 Hz). .sup.19 FNMR (CDCl.sub.3) .delta.-74.68 (CF.sub.3). Anal. Calcd for C.sub.13 H.sub.12 O.sub.2 F.sub.3 Cl: C, 53.35; H, 4.13. Found: C, 53.44; H, 4.10.
EXAMPLE 6
Preparation of 5-(4-Chlorophenyl)-4-methyl-3-(trifluoromethyl)-1H-pyrazole.
A solution of 5.5 g of 4-(4-chlorophenyl)-4-ethoxy-1,1,1-trifluoro-3-methyl-3-buten-2-one in 20 mL of MeOH was slowly treated with 0.70 mL of NH.sub.2 NH.sub.2 and allowed to stir for two hours. Water was added to the reaction mixture and a precipitate formed. The solid was collected by filtration and washed with hexanes to yield 3.87 g of 5-(4-chlorophenyl)-4-methyl-3-(trifluoromethyl)-1H-pyrazole as a white powdery product: mp 139.0 .degree. C.; .sup.1 HNMR (CDCl.sub.3) .delta.2.09 (s, 3H), 7.39 (m, 2H), 7.45 (m, 2H, 8.5 Hz), 11.75 (bs, 1H). .sup.19 FNMR (CDCl.sub.3) .delta.-62.34 (3F). Anal. Calcd for C.sub.11 H.sub.8 N.sub.2 F.sub.3 Cl: C, 50.69; H, 3,09; N, 10.57. Found: C, 50.68; H, 3.05; N, 10.81.
EXAMPLE 7
Preparation of 3-(4-chlorophenyl)-1,4-dimethyl-5-trifluoromethyl)pyrazole.
To a solution of 3.7 g of 5-(4-chlorophenyl)-4-methyl-3-(trifluoromethyl)-1H-pyrazole in 40 mL of acetone was added 5.9 g of potassium carbonate and 1.8 mL of methyl iodide. The mixture was allowed stir overnight at room temperature, filtered and concd in vacuo to give a white solid. This mixture of two isomeric pyrazoles was purified by chromatography on silica (5% ethyl acetate in hexanes) to give 1.8 g (high R.sub.f) of 3-(4-chlorophenyl)-1,4-dimethyl-5-(trifluoromethyl)pyrazole and 2.15 g (low R.sub.f) of 5-(4-chlorophenyl)-1,4-dimethyl-3-(trifluoromethyl)pyrazole. The low R.sub.f material was distilled bulb to bulb (0.1 torr) to give a white, crystalline solid: mp 52.degree.-54.degree. C.; .sup.1 HNMR (CDCl.sub.3) .delta.2.06 (q, 3H, J=1.0 Hz), 3.77 (s, 3H), 7.26 (d, 2H, J=8.5 Hz), 7.50 (d, 2H, J=8.4 Hz); .sup.19 FNMR CDCl.sub.3) .delta.-61.6 (3F). Anal. Calcd for C.sub.12 H.sub.10 N.sub.2 F.sub.3 Cl.sub.1 : C, 52.47; H, 3.67; N, 10.20. Found: C, 52.51; H, 3.70; N, 10.18.
The chromatographically less retained component (high R.sub.f) was recrystallized from hexanes to give 3-(4-chlorophenyl)-1,4 -dimethyl-5-(trifluoromethyl) pyrazole as a white, crystalline solid; mp 87.degree.-88.5.degree. C.; .sup.1 HNMR CDCl.sub.3) .delta.2.25 (q, 3H, J=1.9 Hz), 3.99 (s, 3H), 7.39 (d, 2H, J=8.4 Hz), 7.50 (d, 2H, J=8.5 Hz); 19FNMR CDCl.sub.3) .delta.-58.4 (3F). Anal. Calcd for C.sub.12 H.sub.10 N.sub.2 F.sub.3 Cl.sub.1 : C, 52.47; H, 3.67; N, 10.20. Found: C, 52.48; H, 3.71; N, 10.16.
Examples 8 through 12 describe specific working embodiments of Process III.
EXAMPLE 8
Preparation of 2-Chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid, 1-methylethyl ester.
To a solution of 18 g of 2-chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid (Ex. 2) in 400 mL of CH.sub.2 Cl.sub.2 was added 10 g of oxalyl chloride and a few drops of DMF. After 20 minutes at room temperature, the reaction Was heated to reflux for 2 hr and subsequently concd in vacuo. The resultant solid was dissolved in excess 2-propanol and heated overnight at reflux. The reaction mixture was concd, dissolved in ether, washed with 10% aq. NaOH and saturated brine and concd to give a solid. Recrystallization from cold hexanes gave 14 g of 2-chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid, 1-methylethyl ester: mp 72.degree. C.; .sup.1 HNMR CDCl.sub.3) .delta.1.36 (d, 6H, 6.4 Hz), 2.09 (quintet, 3H, 2.0 Hz), 5.25 (heptet, 1H, 6.0 Hz), 7.27 (d, 1H, 9.2 Hz), 7.94 (d, 1H, 7.6 Hz). Anal. Calcd for C.sub.16 H.sub.15 O.sub.2 N.sub.2 F.sub.4 Cl: C, 50.74; H, 3.99; N, 7.40. Found: C, 50.85; H, 4.02; N, 7.41.
EXAMPLE 9
Preparation of 2-Chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzenemethanol.
A solution of 1.5 g of 2-chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid (Ex. 2) in 30 mL of anhydrous THF was treated with 10 mL of 1.0M borane-THF solution and heated to reflux for 24 hr. The mixture was allowed to cool and added to ice water. A precipitate formed which was collected by filtration, washed with cold water and dried to give 1.3 g of 2-chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazole-3-yl!-4-fluorobenzenemethanol as a white solid: mp 58.degree. C.; .sup.1 HNMR (CDCl.sub.3) .delta.2.09 (q, 3H), 4.00 (s, 3H), 4.75 (s, 2H), 7.20 (d, 1H), 7.57 (d, 1H).
EXAMPLE 10
Preparation of 3-�5-(Bromomethyl)-4-chloro-2-fluorophenyl!-1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazole.
To a solution of 7.0 g of 2-chloro-5-�1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzenemethanol in 200 mL of diethyl ether was added 30 mL of phosphorus tribromide and the mixture allowed to stir overnight. The reaction mixture was poured into ice water, the ether removed by concd in vacuo and the resultant solid collected by filtration. The solid was washed with water and air dried to give a quantitative yield of 3-�5-(bromomethyl)-4-chloro-2-fluorophenyl!-1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazole: .sup.1 HNMR CDCl.sub.3) .delta.2.17 (t. 3H, 2.0 Hz), 4.07 (s, 3H), 4.64 (s, 2H), 7.30 (d, 1H, 9.5 Hz), 7.62 (d, 1H, 7.5 Hz); .sup.19 FNMR CDCl.sub.3) .delta.-58.5 (s, 3F), -111.6 (s, 1F).
EXAMPLE 11
Preparation of 3-�(4-Chloro-2-fluoro-5-(methoxymethyl)phenyl!-1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazole.
A solution of 0.5 g of 3-�5-(bromomethyl)-4-chloro-2-fluorophenyl!-1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazole in 100 mL of methanol was treated with 0.5 g of potassium carbonate and heated to reflux for five days. The mixture was diluted with methanol-water and the resultant precipitate collected by filtration. The solid was washed with water and air dried to afford 0.30 g of 3-�(4-chloro-2-fluoro-5-(methoxymethyl)phenyl!-1,4-dimethyl-5-(trifluoromethyl)-1H-pyrazole as a white powder: mp 59.degree. C.; .sup.1 HNMR CDCl.sub.3) .delta.2.09 (t, 3H, 2.0 Hz), 3.44 (s, 3H), 4.00 (s, 3H), 4.53 (s, 2H), 7.20 (d, 1H, 9.6 Hz), 7.55 (d, 1H, 8.0 Hz).
EXAMPLE 12
Preparation of 2-Chloro-4-fluoro-5-�4-formyl-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester.
To a slurry of 2.5 g of 2-chloro-4-fluoro-5-�4-formyl-1-t-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid (Ex. 3) in 50ml of methylene chloride was added 10 mL of oxalyl chloride followed by catalytic DMF. The solution was stirred for one hour and concd in vacuo. The resultant residue was diluted in 2-propanol and heated to 50.degree. C. for one hour. The reaction was poured onto water and extracted into diethyl ether. The combined organic extracts were washed with brine and 2.5N sodium hydroxide solution, dried and concd to give a material which contained the desired product and a hi-product . Chromatographic purification (silica, 10% ethyl acetate in hexanes) afforded 1.0 g of 2-chloro-4-fluoro-5-�4-formyl-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester in a 36% yield: mp 90.degree. C.; CDCl.sub.3) .delta.10.04 (s, 1H), 7.9 (d, 1H, J=7.6), 7.25 (d,
5.23 (m, 4.11 (s, 1.35 (d, J=6.0).
Examples 13 through 15 describe specific working embodiments of Process IV.
EXAMPLE 13
Preparation of 2-Chloro-5-�4-(difluoromethyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid, 1-methylethyl ester
To a solution of 1.5 g of 2-chloro-4-fluoro-5-�4-formyl-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester in 50 mL methylene chloride was added 7 mL of diethyl aminosulfurtrifluoride and the solution stirred overnight at room temperature. The reaction was poured onto ice water and the organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered and concd in vacuo to give 1.0 g of 2-chloro-5-�4-(difluoromethyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!-4-fluorobenzoic acid, 1-methylethyl ester as a yellow solid: mp 57.degree. C.; .sup.1 HNMR CDCl.sub.3) .delta.8.06 (d, 1H, J=7.7), 7.36 (d, 1H, J=9.5), 6.75 (t, 1H, J=55.1), 5.32 (m, 1H, J=6.3), 4.16 (s, 3H), 1.42 (d, 6H, J=6.6). .sup.19 FNMR CDCl.sub.3) .delta.-58.56, -108.01, -109.53. Anal. Calcd for C.sub.16 H.sub.13 Cl.sub.1 F.sub.6 N.sub.2 O.sub.2 : C, 46.34; H, 3.16; N, 6.75. Found: C, 46.08; H, 3.25; N, 6.79.
EXAMPLE 14
Preparation of 2-Chloro-4-fluoro-5-�4-(hydroxymethyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester.
To a solution of 0.5 g of 2-chloro-4-fluoro-5-�4-formyl-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester in 50ml of anhydrous tetrahydrofuran was added 4 mL of 1M borane in THF solution. The reaction was stirred overnight and then poured onto water, extracted into diethyl ether, dried over anhydrous magnesium sulfate and concd in vacuo to give 0.5 g of 2-chloro-4-fluoro-5-�4-(hydroxymethyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester as a clear oil: .sup.1 HNMR CDCl.sub.3) .delta.8.10 (d, 1H J=7.7,), 7.36 (d, 1H, J=9.6), 5.29 (m, 1H), 4.62 (s, 2H), 4.10 (s, 3H), 1.42 (d, 6H, J=6.6); .sup.19 FNMR CDCl.sub.3) ppm: -58.82, -109.09.
EXAMPLE 15
Preparation of 2-Chloro-4-fluoro-5-�4-(fluoromethyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester.
To a solution of 0.5 g 2-chloro-4-fluoro-5-�4-(hydroxymethyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester in 50ml methylene chloride was added 5 mL of diethyl aminosulfurtrifluoride and the solution stirred overnight at room temperature. The reaction mixture was poured onto ice water and the organic layer washed with brine, dried over anhydrous magnesium sulfate, filtered and the concd in vacuo to give 2-chloro-4-fluoro-5-�4-(fluoromethyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl!benzoic acid, 1-methylethyl ester as a tan solid: mp 74.degree. C.; .sup.1 HNMR (CDCl.sub.3) .delta.8.02 (d, 1H, J=8.0), 7.30 (d, 1H, J=9.6), 5.29 (d, 2H, J=48.0), 5.26 (m, 1H, J=6.0), 4.09 (s, 3H), 1.37 (d, 6H, J=6.4).
Table I shows examples of compounds prepared according to Processes I-IV. Examples I through 15 are described above. Example 16 was prepared by the four step procedure outlined in Process II (Examples 4-7) except that the starting material for the first step was 1-(4-chloro-2-fluoro-5-methylphenyl)-1-propanone. Examples 17-32 and 41-58 were prepared from Example 2 by methods described in Process III. Example 33 was prepared by Process I from 4-bromo-3-(4-chloro-2-fluoro-5-methylphenyl)-1-methyl-5-(trifluoromethyl)-1H-pyrazole. Example 34 was prepared in an analogous manner to Example I except that dimethylformamide was used in place of methyl iodide to quench the intermediate anion. Examples 35 through 40 were prepared from Example i by methods previously described in U.S. Pat. No. 5,281,571.
TABLE 1__________________________________________________________________________3-SUBSTITUTED PHENYLPYRAZOLES ##STR12##Cpd.sup.a No. R.sub.3 R.sub.5 R.sub.6 R.sub.7 Physical Data.sup.b Process__________________________________________________________________________ 1 CH.sub.3 F H F clear oil I 2 CH.sub.3 F Cl COOH 155.degree. C. I 3 CHO F Cl COOH 163.degree. C. I 7 CH.sub.3 H Cl H 87-88.5.degree. C. II 8 CH.sub.3 F Cl CO.sub.2 CH(CH.sub.3).sub.2 72.degree. C. III 9 CH.sub.3 F Cl CH.sub.2 OH 58.degree. C. III10 CH.sub.3 F Cl CH.sub.2 Br .sup.c III11 CH.sub.3 F Cl CH.sub.2 OCH.sub.3 59.degree. C. III12 CHO F Cl COOCHMe.sub.2 90.degree. C. IV13 CHF.sub.2 F Cl COOCHMe.sub.2 57.degree. C. IV14 CH.sub.2 OH F Cl COOCHMe.sub.2 oil IV15 CH.sub.2 F F Cl COOCHMe.sub.2 74.degree. C. IV16 CH.sub.3 OH Cl CH.sub.3 109.5-110.5.degree. C. II17 CH.sub.3 F Cl CO.sub.2 CH.sub.2 CO.sub.2 Et 55.degree. C. III18 CH.sub.3 F Cl CO.sub.2 CH.sub.3 62.degree. C. III19 CH.sub.3 F Cl CO.sub.2 n-propyl 60.degree. C. III20 CH.sub.3 F Cl CO.sub.2 CHMeCO.sub.2 Et clear oil III21 CH.sub.3 F Cl CONH.sub.2 135.degree. C. III22 CH.sub.3 F Cl CONH(CHMe.sub.2) 139.degree. C. III23 CH.sub.3 F Cl CO.sub.2 CH.sub.2 CO.sub.2 CHMe.sub.2 69.degree. C. III24 CH.sub.3 F Cl CO.sub.2 CH.sub.2 CH2CH.sub.2 CO.sub.2 Et 50.degree. C. III25 CH.sub.3 F Cl CO.sub.2 (3-tetrahydrofuranyl) 76.degree. C. III26 CH.sub.3 F Cl CO.sub.2 Et 60.degree. C. III27 CH.sub.3 F Cl CH.sub.2 SCH.sub.3 white solid II28 CH.sub.3 F Cl CH.sub.2 SO.sub.2 CH.sub.3 white solid III29 CH.sub.3 F Cl CH.sub.2 SCHMe.sub.2 white solid III30 CH.sub.3 F Cl CH.sub.2 SH brown solid III31 CH.sub.3 F Cl CH.sub.2 SCH.sub.2 CO.sub.2 CH.sub.3 yellow oil III32 CH.sub.3 F Cl CH.sub.2 SCH.sub.2 CHMe.sub.2 yellow oil III33 CH.sub.3 F Cl CH.sub.3 67-68.degree. C. I34 CHO F H F clear oil I35 CH.sub.3 F NO.sub.2 F 65-67.degree. C. .sup.d36 CH.sub.3 F NO.sub.2 OCH.sub.3 138.degree. C. .sup.d37 CH.sub.3 F Cl OCH.sub.3 89.degree. C. .sup.d38 CH.sub.3 F Cl OCH.sub.2 CO.sub.2 CHMe.sub.2 89.degree. C. .sup.d39 CH.sub.3 F Cl OCH.sub.2 C CH 109.degree. C. .sup.d40 CH.sub.3 F Cl OH 115.degree. C. .sup.d41 CH.sub.3 F Cl CO.sub.2 CH.sub.2 Ph .sup.c III42 CH.sub.3 F Cl CO.sub.2 CH.sub.2 C CH .sup.c III43 CH.sub.3 F Cl CO.sub.2 CH.sub.2 COPh .sup.c III44 CH.sub.3 F Cl CO.sub.2 CH.sub.2 C(OMe)CHCO.sub.2 Et .sup.c III45 CH.sub.3 F Cl CO.sub.2 CH.sub.2 CHMe.sub.2 .sup.c III46 CH.sub.3 F Cl CO.sub.2 CH.sub.2 CHEt.sub.2 .sup.c III47 CH.sub.3 F Cl CO.sub.2 CH.sub.2 (2-morpholinyl) .sup.c III48 CH.sub.3 F Cl CO.sub.2 (CH.sub.2).sub.4 CH.sub.3 .sup.c III49 CH.sub.3 F Cl CO.sub.2 (CH.sub.2).sub.11 CH.sub.3 .sup.c III50 CH.sub.3 F Cl CO.sub.2 CH.sub.2 SCN .sup.c III51 CH.sub.3 F Cl CO.sub.2 CH.sub.2 CH.sub.2 CHMe.sub.2 .sup.c III52 CH.sub.3 F Cl CO.sub.2 CHMeCH.sub.2 OMe .sup.c III53 CH.sub.3 F Cl CO.sub.2 (CH.sub.2).sub.3 COCH.sub.3 .sup.c III54 CH.sub.3 F Cl CO.sub.2 CH.sub.2 CHCH.sub.2 .sup.c III55 CH.sub.3 F Cl CO.sub.2 (CH.sub.2).sub.2 CHMe.sub.2 .sup.c III56 CH.sub.3 F Cl CO.sub.2 (CH.sub.2).sub.2 OCH.sub.3 .sup.c III57 CH.sub.3 F Cl CO.sub.2 CH.sub.2 (2-furanyl) .sup.c III58 CH.sub.3 F Cl CO.sub.2 CH(CH.sub.3)Et .sup.c III__________________________________________________________________________ .sup.a Compound numbers correspond to example numbers. .sup.b Physical Data include melting point and physical appearance. .sup.c No physical data were obtained. .sup.d Prepared by methods in U.S. Pat. No. 5,281,571.
PRE-EMERGENCE HERBICIDE TESTS
As noted above, the compounds of this invention have been found to be surprisingly effective as herbicides.
The tests for pre-emergence herbicide activity were conducted according to the following methods:
Topsoil was placed in an aluminum pan and compacted to a depth of 1.3 to 1.6 cm from the top of the pan. On the top of the soil was placed a predetermined number of seeds of each of several monocotyledonous and dicotyledonous annual plant species and/or vegetative propagules of various perennial plant species. The pan was then level filled with a cover layer of topsoil to which was added a known amount of active ingredient either prior to or after application of the cover layer. The active ingredient was dissolved or suspended in an organic solvent, e.g., acetone, or water as carrier for application to the cover layer. The pans were moved to a greenhouse bench where they were thereafter watered from below as needed to give adequate moisture for germination and growth. In some cases, an initial overhead irrigation of 1/4 inch of water was applied immediately after treatment.
Approximately 14 days after seeding and treating, the pans were observed and the results (% inhibition) were recorded.
The tables below summarize the results of the pre-emergence herbicidal activity tests of compounds of this invention tested with warm season plants (Tables 2a-2d) and cool season plants (Tables 3a and 3b). Table subdivisions a through d represent different spectra of plants tested. The herbicidal rating shown in these tables is the percent inhibition of each plant species. The plant species usually regarded as weeds are identified in the tables by single letter headings and crop species identified by two letter headings both headings being above the columns in accordance with the following legend:
Weed Species
A=Yellow Foxtail
B=Yellow Nutsedge
C=Barnyardgrass
D=Velvetleaf
E=Morning Glory
F=Cocklebur
G=Blackgrass
H=Common Chickweed
I=Bedstraw Catchweed
J=Broadleaf Signalgrass
K=Wild Proso Millet
L=Seedling Johnsongrass
M=Shattercane
N=Prickly Sida
O=Green Foxtail
P=Giant Foxtail
Q=Sicklepod
R=Black Nightshade
S=Hemp Sesbania
T - Wild Oats
U=Downy Brome
V=Birdseye Speedwell
Crop Species
AA=Rice
BB=Corn
CC=Soybean
DD=Wheat
EE=Rape
Where noted in the tables below, the symbol "ND" indicates that the species was planted, but no data obtained for one reason or another.
TABLE 2a__________________________________________________________________________PREEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A A B C D E F AA BB CC__________________________________________________________________________1 4.5 35 45 50 65 35 0 0 10 0 0.893 0 0 0 0 0 0 25 0 034 4.5 20 20 0 75 0 0 0 0 0 0.893 0 0 0 15 0 0 0 0 0 0.1785 0 0 0 0 0 0 0 0 035 4.5 80 30 95 100 85 90 0 55 55 0.893 35 0 25 100 85 55 25 20 40 0.1785 0 0 0 98 80 60 0 5 0 0.893 35 40 0 98 80 35 0 5 25 0.1785 0 0 0 70 15 25 30 0 0 0.0357 0 0 0 0 0 0 0 0 036 0.893 100 0 100 100 90 85 65 90 10 0.1785 98 0 90 98 60 0 0 55 0 0.0357 15 0 20 20 10 20 0 10 0 0.0071 0 0 0 20 0 0 0 0 037 0.893 100 45 100 100 100 98 100 100 100 0.1785 100 50 100 100 90 80 85 85 50 0.0357 95 35 100 100 98 75 0 50 50 0.0071 55 0 80 98 80 100 25 25 2038 0.893 65 85 70 100 100 90 40 40 70 0.1785 25 0 35 98 95 85 0 0 15 0.0357 0 20 15 80 75 65 0 0 5 0.0071 0 0 0 100 20 ND 0 0 039 0.893 100 65 100 100 100 100 100 100 100 0.1785 100 55 100 100 100 95 85 95 95 0.0357 100 25 100 100 85 80 70 80 100 0.0071 95 70 80 100 70 50 65 10 040 4.5 100 0 100 100 100 100 65 85 20 0.893 80 70 35 60 50 45 0 5 20 0.1785 0 0 0 0 0 0 0 0 0 0.0357 0 0 0 0 0 0 0 0 0__________________________________________________________________________
TABLE 2b__________________________________________________________________________PREEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A A C J K L M BB CC__________________________________________________________________________37 0.5 100 100 100 100 100 100 98 80 0.25 100 100 100 100 100 100 95 35 0.125 100 100 100 100 100 100 85 10 0.0625 100 99 99 100 100 99 55 10 0.0313 99 70 85 95 99 90 45 0 0.0156 80 35 65 70 90 55 15 0 0.0078 85 70 75 90 75 60 20 ND39 0.5 100 100 100 100 100 100 100 98 0.25 100 100 100 100 100 100 100 95 0.125 100 100 100 100 100 100 99 85 0.0625 100 100 100 100 100 100 90 40 0.0313 100 100 100 100 100 100 80 35 0.0156 100 99 99 100 95 99 35 25 0.0078 95 60 90 99 75 65 10 0__________________________________________________________________________
TABLE 2c__________________________________________________________________________PREEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A A C D E F L N BB CC__________________________________________________________________________38 0.5000 65 60 100 95 90 60 99 20 0 0.2500 40 20 100 100 70 30 95 5 0 0.1250 10 10 85 98 70 20 70 0 0 0.0625 0 0 90 90 30 0 70 0 0 0.0313 0 0 60 75 0 0 60 0 0 0.0156 0 0 65 55 0 0 50 0 0 0.0078 0 0 50 30 0 0 10 0 0__________________________________________________________________________
TABLE 2d______________________________________PREEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A C D E F L P BB CC______________________________________2 0.25 0 50 35 35 20 0 0 5 0.0625 0 45 25 0 10 10 0 0 0.0156 0 10 0 0 0 0 0 0 1 15 70 60 15 25 0 0 45 0.5 0 35 60 0 0 0 0 0 0.25 0 20 30 0 0 0 0 0 0.125 0 0 0 0 0 0 0 0 0.063 0 0 0 0 0 0 0 0 0.031 0 0 0 0 0 0 0 03 0.25 15 25 60 5 25 5 0 20 0.0625 0 0 0 0 0 0 0 5 0.0156 0 0 0 0 0 0 0 0 0.0039 0 0 0 0 0 0 0 07 1 0 65 5 10 75 55 0 5 0.25 0 0 0 0 25 15 0 0 0.0625 0 0 0 0 0 0 0 08 0.25 100 98 45 80 100 100 85 30 0.0625 95 55 0 40 99 100 20 8 0.0156 30 5 0 20 70 90 5 0 0.5 100 ND 95 85 100 100 98 70 0.25 100 ND 80 75 100 100 90 50 0.125 100 ND 65 65 100 100 90 30 0.063 100 ND 30 50 99 99 25 20 0.031 60 ND 45 40 90 100 10 5 0.016 45 ND 20 25 90 95 0 0 0.25 100 100 100 99 100 100 70 80 0.125 99 100 99 93 100 100 25 60 0.063 88 93 60 63 93 100 23 30 0.031 43 80 90 53 93 100 15 18 0.016 20 60 45 10 58 93 3 15 0.008 5 30 38 0 15 45 5 0 0.25 100 100 100 75 100 100 100 45 0.0625 100 95 85 40 100 100 70 10 0.0156 55 85 50 20 90 98 15 0 0.0039 0 65 0 0 65 90 5 0 0.5 100 100 98 97 100 100 95 65 0.25 100 100 98 85 100 100 85 40 0.125 100 93 93 85 100 100 70 23 0.0625 99 70 55 60 100 100 35 8 0.0313 90 45 40 40 99 100 25 3 0.0156 75 45 45 25 98 97 10 5 0.0078 65 0 20 15 85 95 10 5 0.0039 40 0 0 0 75 80 5 09 0.25 95 98 5 10 85 65 7 0 0.0625 75 85 10 0 65 25 0 0 0.0156 0 50 0 0 15 0 0 010 0.25 20 99 40 50 35 35 5 0 0.0625 0 65 40 0 0 25 0 5 0.0156 0 0 0 0 0 0 0 0 0.0039 0 0 0 0 0 0 0 011 0.25 98 99 45 40 98 98 25 7 0.0625 80 85 30 25 85 80 5 0 0.0156 0 50 15 35 20 5 0 0 0.0039 0 10 0 0 0 0 0 012 0.25 95 95 45 45 98 98 5 35 0.0625 30 75 40 30 75 75 0 5 0.0156 0 0 0 0 50 65 0 0 0.0039 0 0 0 0 10 10 0 0 0.5 95 97 95 80 98 99 15 25 0.25 80 90 85 65 97 98 3 15 0.125 40 85 75 30 80 90 3 0 0.0625 35 50 25 35 85 85 0 0 0.0313 10 10 0 0 45 85 0 0 0.0156 5 0 0 0 30 75 0 0 0.0078 0 0 0 0 10 20 0 0 0.0039 0 0 0 0 10 20 0 013 0.25 100 100 80 70 100 100 80 30 0.0625 95 98 60 45 98 100 40 8 0.0156 30 80 35 0 90 90 10 8 0.0039 5 35 25 0 55 50 5 3 0.5 100 100 97 90 100 100 85 55 0.25 99 98 93 75 100 100 65 30 0.125 98 95 80 70 100 100 40 15 0.0625 90 80 75 65 99 99 35 5 0.0313 55 55 20 30 98 95 5 3 0.0156 30 35 0 10 85 95 3 5 0.0078 15 10 0 5 60 85 3 0 0.0039 0 0 0 0 25 25 0 014 0.25 90 60 40 15 97 98 15 8 0.0625 10 0 5 0 80 85 5 0 0.0156 0 0 0 0 50 50 0 0 0.0039 0 0 0 0 5 25 0 015 0.25 100 97 93 90 100 100 93 20 0.0625 98 65 65 40 100 100 30 15 0.0156 45 5 10 5 97 90 20 10 0.0039 0 10 20 5 35 55 5 016 0.25 0 0 0 0 0 0 0 0 0.0625 0 0 0 0 0 0 0 0 0.0156 0 0 0 0 0 0 0 017 0.25 0 50 50 10 5 40 0 5 0.0625 0 55 0 0 0 15 0 0 0.0156 0 25 0 0 0 0 0 018 0.25 95 98 45 20 90 95 15 15 0.0625 5 60 5 0 45 75 3 0 0.0156 0 20 0 0 0 15 0 0 1 100 100 95 70 99 100 80 80 0.5 100 100 80 80 100 100 30 20 0.25 99 98 55 25 95 100 25 0 0.125 90 95 50 15 65 95 50 0 0.063 55 90 55 20 70 80 0 0 0.031 15 50 10 0 30 45 0 0 0.25 93 100 100 53 85 99 65 40 0.125 60 98 75 25 45 65 8 10 0.063 10 93 55 20 10 30 5 10 0.031 0 43 55 0 0 20 0 0 0.016 0 50 25 10 0 0 3 0 0.008 5 30 25 0 30 3 3 319 0.25 98 90 35 60 95 99 25 10 0.0625 70 55 10 25 85 98 5 3 0.0156 15 15 0 15 20 55 0 0 0.25 95 98 93 70 85 100 28 28 0.125 65 100 95 75 85 99 13 13 0.063 20 78 70 30 48 85 3 10 0.031 0 45 30 0 20 73 3 10 0.016 10 0 0 0 30 60 0 0 0.008 0 0 0 0 5 0 0 020 0.25 95 95 85 55 85 98 15 5 0.0625 70 80 15 35 65 85 0 3 0.0156 0 20 0 0 5 30 0 0 0.5 85 ND 85 90 70 95 15 15 0.25 35 ND 70 55 25 80 10 5 0.125 10 ND 70 45 20 65 0 10 0.063 10 ND 50 0 20 65 0 5 0.031 0 ND 35 0 0 40 0 5 0.016 0 ND 0 0 0 40 0 021 0.25 90 25 20 20 85 45 10 15 0.0625 35 10 15 0 85 40 0 0 0.0156 0 0 0 0 5 10 0 022 0.25 95 40 5 25 97 98 5 25 0.0625 25 10 0 0 70 55 0 3 0.0156 0 0 0 0 0 0 0 023 0.25 40 65 25 10 30 65 0 5 0.0625 0 5 0 5 0 0 0 0 0.0156 0 0 0 0 0 0 0 024 0.25 20 60 0 40 10 35 0 0 0.0625 0 10 0 0 0 0 0 0 0.0156 0 0 0 0 0 0 0 025 0.25 95 80 55 35 99 100 45 5 0.0625 90 80 30 25 90 98 10 0 0.0156 25 25 0 10 35 85 5 0 0.0039 0 0 0 0 20 10 0 026 0.25 100 100 90 85 100 99 97 25 0.0625 98 97 65 35 98 97 65 0 0.0156 75 75 20 25 70 75 10 0 0.0039 10 40 10 10 35 25 3 0 0.5 100 100 99 99 100 100 98 60 0.25 100 100 97 93 100 100 99 75 0.125 100 100 80 88 100 100 85 53 0.063 100 97 60 65 100 100 50 18 0.031 95 97 43 53 90 87 10 5 0.016 85 93 30 40 85 90 8 5 0.25 100 100 98 92 100 99 33 72 0.125 100 100 100 90 100 100 70 73 0.063 98 100 90 68 97 100 25 25 0.031 70 83 73 30 75 65 18 18 0.016 35 83 58 25 43 50 8 3 0.008 0 15 13 10 0 15 0 027 0.25 60 90 75 20 90 50 5 3 0.0625 10 70 65 0 20 0 3 0 0.0156 0 30 0 0 0 0 0 0 0.0039 0 0 0 0 0 0 0 028 0.25 15 45 0 10 50 30 3 0 0.0625 0 0 0 0 20 20 0 0 0.0156 0 20 0 0 0 0 0 0 0.0039 0 25 0 0 0 0 0 029 0.25 80 70 65 15 100 95 30 20 0.0625 30 30 20 0 90 90 0 20 0.0156 0 10 0 0 10 10 0 0 0.0039 0 0 0 0 0 0 0 030 0.25 70 90 20 25 95 25 15 20 0.0625 5 70 30 10 90 25 3 5 0.0156 10 10 0 0 30 10 0 5 0.0039 0 0 0 0 15 0 0 031 0.25 5 80 45 15 40 10 10 3 0.0625 0 20 15 0 45 20 15 0 0.0156 0 5 0 0 0 0 0 0 0.0039 0 0 0 0 0 0 0 032 0.25 5 25 10 25 85 65 5 8 0.0625 0 0 5 0 30 10 3 0 0.0156 0 20 35 0 25 0 10 5 0.0039 0 0 0 0 25 0 0 033 0.25 65 85 25 35 90 65 10 5 0.0625 15 25 0 35 35 20 0 0 0.0156 0 0 0 0 0 0 0 0 0.25 0 55 0 10 0 0 0 0 0.125 0 0 0 0 0 0 0 0 0.063 0 0 0 0 0 0 0 0 0.031 0 0 0 0 0 0 0 0 0.016 0 0 0 0 0 0 0 0 0.008 0 0 0 0 0 0 0 0 1 99 100 98 50 99 95 45 20 0.5 95 100 98 65 98 95 20 10 0.25 70 100 80 50 95 95 10 5 0.125 35 95 70 30 70 95 5 5 0.063 45 100 ND 40 60 85 5 5 0.031 40 100 ND 60 55 90 10 5 0.016 ND 100 ND ND ND ND 15 037 0.5 100 100 100 95 100 100 100 70 0.25 100 100 98 60 100 100 98 40 0.125 100 100 80 55 99 100 90 5 0.0625 99 85 75 30 98 100 80 0 0.0313 70 90 0 0 99 99 30 0 0.0156 15 60 ND 0 70 98 15 0 0.0078 0 0 0 0 15 80 0 038 0.5 10 80 85 75 35 50 5 0 0.25 0 80 95 85 25 20 0 0 0.125 0 50 80 25 0 0 0 0 0.0625 0 0 75 0 0 0 0 0 0.0313 0 0 0 0 0 0 0 0 0.0156 0 0 0 0 0 0 0 0 0.0078 0 0 0 0 0 0 0 041 0.25 50 90 0 25 50 40 0 0 0.0625 0 20 0 0 0 0 0 042 0.25 35 65 60 65 0 0 5 0 0.0625 30 0 0 0 0 0 5 043 0.25 15 65 10 45 35 15 0 0 0.0625 0 0 50 0 0 0 10 044 0.25 10 60 50 0 40 50 0 0 0.0625 55 0 30 0 10 5 0 045 0.25 75 98 30 50 98 100 0 0 0.0625 25 60 35 50 95 95 0 046 0.25 0 80 20 10 75 40 0 0 0.0625 0 20 0 0 55 35 0 047 0.25 75 80 70 0 50 75 0 0 0.0625 25 25 65 0 25 20 0 048 0.25 100 95 99 45 98 99 35 0 0.0625 85 65 40 20 65 60 3 049 0.25 75 0 40 0 45 10 0 0 0.0625 25 0 65 0 0 0 0 050 0.25 25 40 0 0 0 0 0 0 0.0625 0 0 15 0 0 0 0 051 0.25 50 90 15 0 80 90 8 3 0.0625 0 80 15 0 50 40 0 052 0.25 100 100 70 65 100 100 75 5 0.0625 100 100 100 45 99 100 45 053 0.25 85 85 80 15 75 9 5 0 0.0625 70 85 60 45 60 70 8 554 0.25 100 100 40 35 99 99 10 5 0.0625 75 85 70 0 75 80 0 055 0.25 30 85 10 30 95 100 0 0 0.0625 65 0 0 0 90 80 5 056 0.25 100 100 80 20 80 90 0 0 0.0625 40 100 80 25 35 55 3 057 0.25 50 90 90 10 15 10 0 0 0.0625 20 90 75 5 0 0 15 058 0.25 100 100 100 75 100 100 20 25 0.0625 99 85 55 10 85 90 3 15______________________________________
TABLE 3a______________________________________PREEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A G H I DD______________________________________1 4.5 15 0 0 10 0.893 0 0 0 0 0.1785 0 0 0 034 4.5 25 0 10 5 0.893 0 0 0 0 0.1785 0 0 0 035 4.5 80 95 100 10 0.893 35 35 100 0 0.1785 0 0 30 036 0.893 100 100 100 25 0.1785 75 0 100 10 0.0357 0 0 20 0 0.0071 0 0 0 0 0.893 50 30 100 10 0.1785 0 25 80 0 0.0357 0 70 0 0 0.0071 0 0 0 037 0.893 100 100 100 100 0.1785 100 90 100 70 0.0357 70 20 85 10 0.0071 0 0 0 038 0.893 20 100 100 0 0.1785 15 98 100 15 0.0357 0 90 100 0 0.0071 0 20 45 039 0.893 100 100 100 100 0.1785 100 100 100 80 0.0357 100 100 100 15 0.0071 10 85 25 040 4.5 100 90 100 70 0.893 20 0 30 0 0.1785 0 0 0 0 0.0357 0 0 0 0______________________________________
TABLE 3b__________________________________________________________________________PREEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A G H I O T U V EE DD__________________________________________________________________________2 0.25 15 60 50 25 15 25 55 20 7 0.0625 5 60 25 10 5 10 15 5 0 0.0156 5 60 35 30 10 15 50 10 03 0.25 5 0 5 30 5 0 0 5 0 0.0625 0 0 0 0 0 0 10 0 0 0.0156 0 0 0 5 0 0 0 0 0 0.0039 0 0 0 5 0 0 5 0 07 1 40 15 35 50 10 35 15 0 8 0.25 0 0 5 0 0 0 0 0 0 0.0625 0 0 0 0 0 0 0 0 08 0.25 100 100 90 100 95 100 100 98 0 0.0625 100 100 35 100 45 75 100 65 0 0.0156 75 85 20 100 20 20 100 25 0 0.5 100 100 100 100 100 100 ND 100 30 0.25 100 100 100 100 100 100 ND 100 15 0.125 100 100 100 100 100 100 ND 100 0 0.0625 100 100 100 100 90 85 ND 85 0 0.0313 100 100 100 100 90 97 ND 50 0 0.0156 95 100 90 90 50 50 ND 50 0 0.0078 100 100 75 100 75 65 ND 60 0 0.5 100 100 100 100 100 100 100 95 10 0.25 100 100 100 100 100 99 100 90 0 0.125 100 100 100 100 97 95 100 90 0 0.0625 100 100 99 100 95 90 100 65 0 0.0313 100 99 65 100 85 75 100 45 0 0.0156 97 95 80 100 70 40 99 40 0 0.0078 88 75 65 100 30 30 97 20 0 0.0039 45 30 30 100 10 15 95 10 09 0.25 80 90 20 100 5 5 90 30 0 0.0625 40 20 5 100 0 0 90 25 0 0.0156 30 15 5 70 0 0 40 5 010 0.25 20 5 30 98 5 25 80 50 0 0.0625 5 0 5 60 0 0 65 5 0 0.0156 0 5 0 10 0 0 55 5 0 0.0039 0 0 0 15 0 0 65 10 011 0.25 60 25 75 100 20 10 95 15 0 0.0625 20 25 10 75 0 5 60 5 0 0.0156 25 15 5 10 0 5 65 5 0 0.0039 15 35 10 5 0 5 60 0 012 0.25 60 85 65 98 60 60 80 15 5 0.0625 55 75 60 98 40 35 80 10 0 0.0156 35 45 20 95 15 15 30 5 0 0.0039 25 15 10 70 5 5 35 0 013 0.25 98 90 100 100 95 100 90 65 3 0.0625 98 90 90 100 75 65 90 45 2 0.0156 65 25 50 100 25 25 30 10 0 0.0039 20 20 10 98 5 5 25 0 014 0.25 65 98 20 100 50 30 98 5 2 0.0625 25 80 5 85 5 5 25 0 0 0.0156 10 85 5 30 5 10 25 0 0 0.0039 5 85 0 50 5 5 5 5 015 0.25 100 100 98 100 90 100 100 60 0 0.0625 80 100 65 100 90 70 80 15 0 0.0156 30 90 10 100 40 15 35 10 0 0.0039 30 75 0 100 5 5 55 5 016 0.25 15 95 45 10 20 20 100 55 0 0.0625 10 95 45 15 10 25 95 85 0 0.0156 5 80 75 15 15 20 80 10 017 0.25 20 100 100 35 15 30 100 90 0 0.0625 15 70 55 20 10 25 98 45 0 0.0156 30 75 45 60 5 10 80 20 018 0.25 95 100 100 100 80 85 100 100 0 0.0625 70 65 50 100 25 15 98 55 0 0.0156 25 25 5 100 10 20 98 20 019 0.25 95 100 80 100 75 40 100 50 0 0.0625 80 85 35 100 25 35 100 25 0 0.0156 35 15 10 100 20 20 95 40 020 0.25 70 100 100 100 25 65 100 95 0 0.0625 25 98 75 100 20 25 100 45 0 0.0156 25 98 55 100 10 30 95 30 021 0.25 95 98 90 100 60 35 100 90 5 0.0625 65 80 60 90 5 10 70 20 0 0.0156 15 65 15 25 5 5 30 10 022 0.25 85 100 100 100 85 40 100 90 6 0.0625 40 60 45 85 20 10 100 15 5 0.0156 25 55 40 85 10 10 60 10 023 0.25 15 100 45 85 10 15 100 75 0 0.0625 35 25 15 100 5 20 50 15 0 0.0156 10 25 45 55 10 35 85 15 324 0.25 50 100 95 100 15 30 100 95 7 0.0625 25 70 35 15 5 10 40 20 0 0.0156 20 65 40 10 5 20 80 25 025 0.25 98 100 85 100 90 10 100 35 0 0.0625 90 90 35 98 25 10 85 35 0 0.0156 60 50 35 95 0 0 65 10 0 0.0039 55 25 0 80 0 0 25 5 026 0.25 95 100 80 100 65 55 100 40 0 0.0625 70 90 35 100 10 5 100 20 0 0.0156 20 60 15 100 0 0 80 15 0 0.0039 10 25 5 45 0 0 35 10 027 0.25 35 75 65 100 5 5 35 10 0 0.0625 15 35 35 70 0 5 30 5 0 0.0156 5 25 5 35 0 0 20 0 0 0.0039 10 15 0 25 0 0 65 0 028 0.25 30 25 40 90 0 0 70 5 0 0.0625 15 10 15 45 0 0 45 0 0 0.0156 15 5 5 40 0 0 45 0 0 0.0039 15 15 5 40 0 0 35 0 029 0.25 40 90 70 95 15 10 70 15 0 0.0625 10 30 40 50 0 5 65 0 0 0.0156 5 40 30 50 0 5 30 5 0 0.0039 5 0 5 35 0 5 55 5 030 0.25 20 35 40 98 0 5 50 5 0 0.0625 10 15 10 60 0 5 50 5 0 0.0156 5 20 5 35 0 5 15 0 0 0.0039 0 5 5 15 0 0 5 0 031 0.25 5 25 30 20 5 5 25 5 0 0.0625 5 20 15 5 0 0 20 5 0 0.0156 0 5 10 5 0 5 35 0 0 0.0039 0 5 0 5 0 0 15 0 032 0.25 10 5 5 40 0 0 45 5 0 0.0625 0 10 0 25 5 0 30 0 0 0.0156 0 35 25 0 0 0 55 5 0 0.0039 0 25 5 0 0 0 40 0 033 0.25 40 30 45 50 5 10 55 10 0 0.0625 10 20 20 10 0 5 20 5 0 0.0156 15 30 35 20 0 10 50 0 041 0.25 15 55 60 100 10 30 100 5 3 0.0625 10 20 35 98 5 10 95 0 042 0.25 15 40 80 95 5 10 30 5 0 0.0625 5 0 0 70 0 0 5 0 043 0.25 10 55 20 60 5 5 60 5 0 0.0625 5 5 0 20 0 5 5 0 044 0.25 20 85 40 100 5 5 85 20 0 0.0625 5 30 60 80 0 5 75 0 045 0.25 100 80 98 100 80 98 100 5 0 0.0625 30 35 50 100 20 45 98 0 046 0.25 10 90 75 80 5 15 80 5 0 0.0625 5 60 50 75 0 10 70 0 047 0.25 25 70 95 100 5 20 70 5 0 0.0625 15 10 45 85 0 10 10 5 048 0.25 60 95 45 100 45 90 100 5 0 0.0625 15 15 10 100 10 20 70 10 049 0.25 5 5 5 60 5 5 55 0 0 0.0625 5 0 5 30 0 5 40 0 050 0.25 5 35 25 10 0 5 35 0 0 0.0625 0 5 0 25 0 5 25 0 051 0.25 20 70 55 100 15 35 90 5 0 0.0625 10 10 5 100 5 5 55 5 052 0.25 100 95 90 100 85 100 95 60 0 0.0625 80 80 80 100 40 75 80 20 053 0.25 15 40 50 100 5 15 70 5 0 0.0625 35 10 90 100 10 25 80 10 054 0.25 35 90 80 100 30 75 98 0 5 0.0625 15 70 20 100 10 10 75 0 055 0.25 60 75 85 100 35 55 100 5 0 0.0625 15 15 0 95 0 15 75 0 056 0.25 75 95 90 100 55 100 100 5 5 0.0625 40 65 60 100 25 40 70 0 057 0.25 15 20 80 85 5 20 60 0 0 0.0625 5 5 5 50 0 5 5 0 058 0.25 95 100 95 100 75 100 100 50 5 0.0625 50 45 45 100 25 35 80 5 0__________________________________________________________________________
POST-EMERGENCE HERBICIDE TESTS
The post-emergence herbicidal activity of some of the various compounds of this invention was demonstrated by greenhouse testing in the following manner.
Topsoil was placed in aluminum pans having holes in the bottom and compacted to a depth of 1.3 to 1.6 cm from the top of the pan. A predetermined number of seeds of each of several dicotyledonous and monocotyledonous annual plant species and/or vegetative propagules for the perennial plant species were placed on the soil and pressed into the soil surface. The seeds and/or vegetative propagules were covered with soil and leveled. The pans were then placed on a bench in the greenhouse and watered either from overheard irrigation or by subirrigation as needed. After the plants reach the desired age (two to three weeks), each pan, is removed individually to a spraying chamber and sprayed by means of an atomizer, operating at a spray pressure of 170.3 kPa (10 psig) at the application rates noted. In the spray solution was an amount of an emulsifying agent mixture to give a spray solution or suspension which contains about 0.4% by volume of the emulsifier. The spray solution or suspension contained a sufficient amount of the candidate chemical in order to give application rates of the active ingredient corresponding to those shown in Tables 4 and 5, while applying a total amount of solution or suspension equivalent to 1870 L/Ha (200 gallons/acre). The pans were returned to the greenhouse and watered as before and the injury to the plants as compared to the control was observed at approximately 10-14 days (usually 11 days) and in some instances observed again at 24-28 days (usually 25 days) after spraying. The post-emergent herbicidal activity shown in these tables is the percent inhibition of each plant species. Testing with warm season and cool season plants is shown in tables 4a-4d and 3a-3b, respectively. Table subdivisions a through d represent different spectra of plants tested.
TABLE 4a______________________________________POSTEMERGENCE TESTCpd Rate % PLANT INHIBITIONNo. lb/A A B C D E F G BB CC______________________________________1 4.5 50 30 0 20 15 0 0 40 0 0.893 0 0 0 0 0 0 0 0 0 0.1785 0 0 0 0 0 0 0 0 034 4.5 0 0 10 20 55 25 0 15 15 0.893 0 0 0 0 0 0 0 0 10 0.1785 0 0 0 0 0 0 0 0 035 4.5 65 0 65 100 95 90 0 75 55 0.893 15 0 20 75 85 55 0 60 30 0.1785 0 0 0 50 65 0 0 30 20 0.893 35 0 0 70 100 15 0 25 55 0.1785 20 0 0 45 75 0 0 20 25 0.0357 0 0 0 0 0 0 0 0 0 0.0071 0 0 0 0 0 0 0 0 036 0.893 70 25 50 100 100 98 0 40 45 0.1785 45 0 45 75 85 60 0 30 35 0.0357 10 0 0 70 40 0 0 25 25 0.0071 0 0 0 65 20 75 0 0 1537 0.893 65 40 45 100 100 80 15 100 60 0.1785 65 15 65 80 95 55 10 80 40 0.0357 20 10 15 35 45 40 0 10 40 0.0071 0 0 0 25 0 5 0 5 1038 0.893 15 25 15 100 100 100 0 25 25 0.1785 10 25 15 100 100 80 10 25 30 0.0357 35 25 10 100 100 80 0 10 20 0.0071 0 35 10 65 80 80 0 5 1039 0.893 100 30 98 100 95 100 70 95 100 0.1785 100 10 98 100 100 80 25 100 70 0.0357 100 40 70 100 80 98 35 30 70 0.0071 65 0 30 75 95 80 10 50 2540 4.5 100 0 85 100 100 100 30 50 80 0.893 10 0 65 100 80 70 50 85 70 0.1785 0 55 0 75 70 65 0 45 30 0.0357 0 70 0 55 50 80 0 25 25______________________________________
TABLE 4b______________________________________POSTEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A C D E F P BB CC______________________________________37 0.0625 50 55 60 50 45 45 70 0.0313 40 40 40 40 45 35 45 0.0156 35 40 40 40 40 35 30 0.078 0 15 20 10 0 0 0 0.0039 0 0 0 0 0 0 0______________________________________
TABLE 4c______________________________________POSTEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A D E F N Q R S BB CC______________________________________38 0.25 100 95 100 50 20 100 100 10 15 0.125 99 98 100 0 0 100 99 10 10 0.0625 100 100 99 0 0 100 99 10 5 0.0313 80 90 99 0 0 100 80 5 5 0.0156 70 90 90 0 0 100 65 5 0 0.078 65 85 70 0 0 100 70 5 0______________________________________
TABLE 4d______________________________________POSTEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A C D E F L P BB CC______________________________________2 0.25 15 85 45 70 20 0 3 20 0.0625 0 45 15 65 0 0 2 10 0.0156 0 10 5 15 0 0 0 53 0.25 0 85 25 65 0 0 2 15 0.0625 0 10 0 15 0 0 0 3 0.0156 0 0 0 0 0 0 0 0 0.0039 0 0 0 0 0 0 0 07 1 0 25 20 5 30 0 0 20 0.25 0 5 0 0 0 0 0 5 0.0625 0 20 0 0 0 0 0 08 0.25 40 90 40 75 70 30 15 35 0.0625 15 90 30 70 55 15 8 25 0.0156 0 75 5 65 5 0 2 5 0.25 85 99 95 99 90 80 20 75 0.0625 30 90 60 75 35 35 8 25 0.0156 5 70 65 45 15 5 5 15 0.0039 0 50 55 40 0 0 2 109 0.25 25 95 45 35 20 10 10 60 0.0625 10 80 20 25 5 0 5 15 0.0156 0 65 15 5 20 5 2 2010 0.25 5 90 35 55 15 15 3 8 0.0625 0 75 15 40 5 5 2 7 0.0156 0 35 5 25 0 0 0 5 0.0039 0 25 0 0 0 0 0 011 0.25 0 50 25 15 5 0 15 20 0.0625 5 25 5 15 5 0 3 7 0.0156 0 5 5 5 0 0 0 5 0.0039 0 5 0 0 0 0 0 512 0.25 80 99 99 98 65 35 15 85 0.0625 40 95 95 80 55 20 8 35 0.0156 10 95 90 80 25 0 10 20 0.0039 5 80 70 70 5 5 5 2013 0.25 90 100 98 95 100 95 55 90 0.0625 50 100 95 95 98 90 25 75 0.0156 10 95 85 95 65 20 20 40 0.0039 5 85 70 65 35 5 5 2514 0.25 65 99 85 95 80 25 10 25 0.0625 5 90 75 85 65 35 8 20 0.0156 0 65 35 35 55 5 2 15 0.0039 5 65 25 10 45 5 5 1515 0.25 99 100 98 99 100 90 65 90 0.0625 65 99 98 95 100 93 20 65 0.0156 5 95 65 75 85 10 10 35 0.0039 0 80 65 75 70 5 8 1016 0.25 0 0 5 0 0 0 0 0 0.0625 0 0 0 0 0 0 0 0 0.0156 0 0 0 0 0 0 0 017 0.25 70 99 90 95 65 45 10 30 0.0625 35 95 65 85 20 10 8 15 0.0156 15 70 20 65 5 0 2 1018 0.25 5 90 50 65 35 5 15 40 0.0625 0 65 15 40 10 0 3 30 0.0156 0 60 15 3 0 0 2 519 0.25 65 90 35 75 80 65 20 50 0.0625 5 70 20 65 35 5 5 15 0.0156 0 40 10 40 10 0 3 1020 0.25 85 100 98 90 80 75 8 35 0.0625 80 99 80 90 85 55 7 35 0.0156 20 99 65 80 60 25 5 1521 0.25 25 90 90 65 35 35 10 35 0.0625 20 45 50 25 25 15 5 25 0.0156 35 55 15 55 35 35 3 1022 0.25 30 90 40 65 60 75 5 50 0.0625 20 55 30 65 20 25 5 20 0.0156 15 40 25 45 20 15 3 523 0.25 60 98 65 90 65 20 7 30 0.0625 25 80 60 75 35 20 7 20 0.0156 0 70 20 65 10 0 3 524 0.25 15 99 75 85 20 15 10 45 0.0625 10 98 65 75 10 5 10 35 0.0156 5 65 25 55 5 0 7 1525 0.25 85 100 90 90 85 75 20 60 0.0625 35 100 70 65 35 60 15 30 0.0156 5 90 60 50 25 20 5 25 0.0039 0 65 15 5 20 5 0 2026 0.25 95 99 80 85 80 45 25 75 0.0625 65 98 70 80 75 10 15 50 0.0156 30 80 35 50 45 5 7 20 0.0039 5 75 45 15 20 0 3 1027 0.25 70 98 95 80 90 35 65 80 0.0625 35 80 75 65 35 20 20 60 0.0156 5 65 75 35 35 5 20 25 0.0039 5 10 35 15 15 0 15 2028 0.25 10 60 65 40 20 25 40 20 0.0625 0 25 20 20 35 5 20 15 0.0156 0 20 15 25 20 0 5 15 0.0039 0 15 15 15 10 5 20 3529 0.25 90 99 90 90 90 65 20 90 0.0625 40 95 65 75 70 55 8 80 0.0156 5 95 75 70 25 5 5 35 0.0039 15 70 45 45 20 0 5 2030 0.25 60 85 65 60 70 20 20 65 0.0625 15 70 35 50 35 20 8 30 0.0156 5 65 5 20 10 5 5 15 0.0039 5 35 0 15 0 0 3 1531 0.25 70 99 80 99 90 50 50 35 0.0625 50 98 65 80 75 40 50 15 0.0156 35 85 35 75 20 0 7 10 0.0039 20 75 25 65 10 0 2 732 0.25 35 85 40 65 45 45 15 20 0.0625 15 65 10 45 25 25 3 15 0.0156 0 25 0 15 15 15 2 7 0.0039 0 10 0 10 0 0 2 533 0.25 0 10 10 0 0 0 0 15 0.0625 0 0 5 0 0 0 0 5 0.0156 0 15 5 0 0 0 0 041 0.25 65 99 75 95 70 5 35 15 0.0625 15 98 70 85 55 15 5 1042 0.25 65 98 70 85 45 0 25 10 0.0625 10 98 40 60 35 0 5 743 0.25 5 80 75 85 25 0 7 15 0.0625 5 65 15 70 10 0 10 544 0.25 90 99 80 99 60 65 15 10 0.0625 15 90 75 90 25 0 3 845 0.25 75 100 80 100 95 80 55 35 0.0625 55 100 90 85 80 35 10 2046 0.25 50 98 70 85 25 0 15 15 0.0625 10 90 35 75 15 0 15 747 0.25 5 100 70 100 50 5 50 30 0.0625 20 90 40 80 25 5 5 848 0.25 60 100 75 90 85 99 7 70 0.0625 45 99 80 80 90 95 7 4549 0.25 0 10 5 50 5 0 5 5 0.0625 0 25 0 30 0 0 5 550 0.25 5 90 35 60 0 0 5 7 0.0625 5 40 5 50 0 0 3 751 0.25 60 100 35 85 85 85 7 65 0.0625 30 99 30 75 20 45 5 4552 0.25 99 100 99 100 99 100 15 95 0.0625 55 100 85 99 100 99 10 6553 0.25 70 100 99 100 75 75 7 75 0.0625 25 95 50 75 25 15 5 4054 0.25 95 100 80 99 90 90 35 80 0.0625 65 99 50 85 70 35 7 2055 0.25 45 99 85 90 70 35 20 20 0.0625 20 90 35 65 15 0 10 1556 0.25 80 100 80 99 95 100 35 90 0.0625 60 99 95 95 85 90 7 6557 0.25 35 100 50 85 35 15 3 17 0.0625 15 90 35 70 20 5 2 2058 0.25 85 100 100 99 95 95 20 85 0.0625 65 100 85 99 90 90 5 45______________________________________
TABLE 5a______________________________________POSTEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A G H I DD______________________________________1 4.5 35 40 30 10 0.893 0 0 0 0 0.1785 0 0 0 034 4.5 30 0 80 10 0.893 0 0 0 0 0.1785 0 0 0 035 4.5000 45 35 85 25 0.8930 35 10 95 15 0.1785 0 0 0 0 0.8930 35 0 75 20 0.1785 15 0 75 5 0.0357 0 0 25 0 0.0071 0 0 0 036 0.8930 60 65 75 25 0.1785 25 35 50 20 0.0357 10 15 25 5 0.0071 0 85 0 1037 0.8930 85 80 90 30 0.1785 65 70 75 10 0.0357 25 40 35 0 0.0071 10 0 20 538 0.8930 5 98 85 10 0.1785 30 95 90 10 0.0357 25 75 85 10 0.0071 0 65 35 1039 0.8930 100 100 100 75 0.1785 95 100 100 15 0.0357 80 100 100 0 0.0071 0 0 0 040 4.5000 100 98 100 25 0.8930 65 98 98 20 0.1785 35 80 60 15 0.0357 0 15 20 0______________________________________
TABLE 5b__________________________________________________________________________POSTEMERGENCE TESTSCpd Rate % PLANT INHIBITIONNo. lb/A G H I O T U V EE DD__________________________________________________________________________2 0.25 10 70 50 15 0 0 80 0 0 0.0625 0 20 15 0 0 0 65 0 0 0.0156 0 0 0 0 0 0 50 0 03 0.25 0 25 15 10 5 0 75 10 8 0.0625 0 5 5 0 0 0 65 5 0 0.0156 0 5 5 0 0 0 15 5 0 0.0039 0 5 5 5 0 0 25 0 07 1 15 5 80 55 20 25 75 5 17 0.25 5 0 35 20 5 5 65 0 5 0.0625 0 0 5 5 0 0 60 5 08 0.25 5 40 60 20 25 30 55 25 12 0.0625 20 25 35 15 20 20 45 5 6 0.0156 10 25 20 10 15 10 35 5 5 0.25 85 100 95 90 80 85 100 65 40 0.125 55 80 90 90 75 60 95 65 20 0.0625 70 85 85 65 60 50 85 30 10 0.0313 25 15 70 50 30 40 50 10 5 0.0156 40 10 65 40 20 15 45 5 5 0.0078 25 5 60 55 10 15 40 15 7 0.5 98 100 98 100 98 98 100 100 75 0.25 97 100 95 97 97 97 100 100 60 0.125 93 88 80 95 75 70 99 97 40 0.0625 90 80 70 80 70 60 99 95 30 0.0313 70 95 65 45 40 40 85 65 25 0.0156 75 65 55 50 30 35 70 75 18 0.0078 50 50 40 35 15 10 50 15 12 0.0039 45 75 45 30 5 10 55 20 109 0.25 20 15 50 20 25 25 35 20 13 0.0625 10 10 20 15 10 10 10 5 5 0.0156 5 15 15 15 5 5 10 0 010 0.25 20 15 25 50 10 25 90 35 10 0.0625 10 5 15 40 10 15 55 15 7 0.0156 5 5 10 10 0 5 40 5 0 0.0039 0 5 5 5 0 5 25 0 011 0.25 15 10 50 25 5 10 60 5 6 0.0625 5 0 50 20 0 5 25 0 0 0.0156 0 0 5 5 0 0 10 5 0 0.0039 0 0 5 0 0 0 5 5 012 0.25 50 100 95 90 85 90 100 100 30 0.0625 25 98 65 70 60 70 100 100 25 0.0156 20 80 50 45 40 45 98 75 23 0.0039 15 70 35 20 35 35 100 70 2213 0.25 95 98 100 100 90 90 100 100 20 0.0625 65 90 98 95 75 75 100 98 15 0.0156 20 70 75 75 40 35 100 80 14 0.0039 25 40 55 30 30 30 90 55 814 0.25 60 45 40 65 50 60 90 75 13 0.0625 30 40 25 25 25 35 90 40 10 0.0156 5 15 10 10 20 25 30 25 8 0.0039 5 5 5 5 5 10 20 10 015 0.25 100 100 100 100 100 100 100 100 20 0.0625 95 80 75 85 80 75 100 80 15 0.0156 50 65 75 50 40 40 100 45 10 0.0039 20 20 20 30 20 25 70 30 516 0.25 5 50 25 0 0 0 30 0 0 0.0625 5 10 5 0 0 0 10 0 0 0.0156 5 5 5 0 0 0 15 0 017 0.25 15 90 95 20 20 30 98 20 15 0.0625 10 75 70 15 20 25 100 15 10 0.0156 5 45 50 10 15 15 50 10 518 0.25 20 35 65 20 20 25 60 15 7 0.0625 10 30 55 15 15 15 40 10 5 0.0156 5 25 40 5 15 10 20 5 019 0.25 20 50 60 20 20 25 55 15 10 0.0625 15 30 45 15 20 20 35 5 5 0.0156 10 25 35 15 15 10 30 10 520 0.25 35 98 95 25 45 40 100 25 22 0.0625 25 80 55 20 30 35 98 20 18 0.0156 15 40 50 15 20 25 35 10 1221 0.25 10 30 65 25 20 25 50 20 5 0.0625 5 15 35 15 5 15 25 15 0 0.0156 5 10 20 15 5 5 5 5 022 0.25 5 40 45 20 10 15 40 10 0 0.0625 5 35 40 15 5 15 35 0 0 0.0156 0 20 25 10 5 5 20 10 023 0.25 15 75 50 15 20 25 75 10 11 0.0625 10 65 50 15 20 15 45 5 7 0.0156 5 30 25 10 10 5 25 5 024 0.25 25 90 65 20 25 25 95 25 20 0.0625 20 70 70 20 20 25 80 10 19 0.0156 5 35 55 15 15 20 75 5 725 0.25 40 90 65 65 35 50 95 40 16 0.0625 30 40 60 35 25 25 40 25 7 0.0156 15 15 50 25 10 15 15 0 5 0.0039 5 10 10 15 5 10 10 5 026 0.25 35 85 60 60 35 45 85 60 17 0.0625 25 55 55 30 25 40 50 25 10 0.0156 0 25 40 5 10 15 15 15 0 0.0039 0 0 5 5 0 0 10 5 027 0.25 30 65 90 75 25 40 100 80 13 0.0625 20 40 75 50 15 35 90 50 10 0.0156 10 25 35 35 5 25 70 30 8 0.0039 10 25 25 30 10 15 75 25 728 0.25 10 25 60 50 15 20 85 20 8 0.0625 5 15 20 45 5 10 75 20 5 0.0156 5 5 10 10 5 5 40 15 0 0.0039 5 10 10 15 5 5 50 10 329 0.25 70 95 100 95 75 70 100 100 12 0.0625 50 90 65 70 60 60 95 100 8 0.0156 15 70 40 25 35 45 85 60 7 0.0039 5 25 20 20 15 20 75 35 530 0.25 30 75 40 65 25 25 98 60 15 0.0625 15 40 30 40 20 20 70 40 16 0.0156 10 20 25 35 15 20 50 25 8 0.0039 10 20 25 20 15 20 40 15 631 0.25 20 95 70 75 35 55 100 75 20 0.0625 15 75 60 60 25 40 100 60 17 0.0156 10 60 40 20 20 30 70 20 16 0.0039 10 50 40 15 20 35 75 15 1432 0.25 25 20 45 65 20 25 90 50 15 0.0625 15 15 35 25 15 20 80 25 10 0.0156 5 10 10 10 5 5 20 10 5 0.0039 5 15 10 10 5 10 40 5 533 0.25 5 10 10 15 5 5 15 5 5 0.0625 5 5 5 5 0 5 5 5 0 0.0156 0 10 5 5 0 5 5 0 041 0.25 20 98 100 90 20 30 100 40 15 0.0625 15 90 50 60 20 20 98 25 1042 0.25 20 95 100 40 20 30 95 40 15 0.0625 15 65 90 30 15 20 75 15 543 0.25 10 65 30 20 15 10 100 25 10 0.0625 5 30 25 20 10 10 70 15 544 0.25 25 95 100 90 25 35 100 45 15 0.0625 15 60 50 35 20 20 90 25 1545 0.25 98 100 100 100 80 95 100 50 17 0.0625 35 70 70 60 35 50 100 25 1546 0.25 20 95 100 70 20 15 100 45 15 0.0625 10 60 65 45 20 5 80 25 1047 0.25 20 95 90 70 30 20 95 65 15 0.0625 15 90 35 55 25 15 98 40 1048 0.25 70 65 80 98 75 65 100 60 16 0.0625 25 35 30 80 35 35 90 15 1049 0.25 20 10 35 60 20 20 80 20 10 0.0625 5 5 30 45 10 10 70 10 550 0.25 5 60 35 25 10 10 75 15 10 0.0625 5 15 35 15 10 10 50 10 1051 0.25 45 75 40 80 55 45 98 20 12 0.0625 25 95 40 45 30 45 70 20 752 0.25 95 100 100 98 95 100 100 100 25 0.0625 65 95 95 95 80 90 100 98 1553 0.25 25 90 95 80 40 45 95 98 16 0.0625 20 75 90 40 20 20 70 60 1254 0.25 30 90 98 98 80 70 100 75 16 0.0625 25 90 100 70 45 75 90 25 1555 0.25 20 70 75 65 30 20 95 15 10 0.0625 60 90 80 100 70 70 100 45 1556 0.25 60 90 98 98 80 85 100 98 16 0.0625 35 90 85 75 40 55 90 70 1557 0.25 15 55 40 40 25 15 100 15 8 0.0625 15 30 35 10 10 10 20 10 558 0.25 80 95 90 85 85 85 100 65 18 0.0625 40 90 65 80 50 40 100 50 15__________________________________________________________________________
The herbicidal compositions of this invention, including concentrates which require dilution prior to application, may contain at least one active ingredient and an adjuvant in liquid or solid form. The compositions are prepared by admixing the active ingredient with an adjuvant including diluents, extenders, carriers, and conditioning agents to provide compositions in the form of finely-divided particulate solids, granules, pellets, solutions, dispersions or emulsions. Thus, it is believed that the active ingredient could be used with an adjuvant such as a finely-divided solid, a liquid of organic origin, water, a wetting agent, a dispersing agent, an emulsifying agent or any suitable combination of these.
Suitable wetting agents are believed to include alkyl benzene and alkyl naphthalene sulfonates, sulfated fatty alcohols, amines or acid amides, long chain acid esters of sodium isothionate, esters of sodium sulfosuccinate, sulfated or sulfonated fatty acid esters, petroleum sulfonates, sulfonated vegetable oils, ditertiary acetylenic glycols, polyoxyethylene derivatives of alkylphenols (particularly isooctylphenol and nonylphenol) and polyoxyethylene derivatives of the mono-higher fatty acid esters of hexitol anhydrides (e.g., sorbitan). Preferred dispersants are methyl cellulose, polyvinyl alcohol, sodium lignin sulfonates, polymeric alkyl naphthalene sulfonates, sodium naphthalene sulfonate, and polymethylene bisnaphthalene sulfonate. Wettable powders are water-dispersible compositions containing one or more active ingredients, an inert solid extender and one or more wetting and dispersing agents. The inert solid extenders are usually of mineral origin such as the natural clays, diatomaceous earth and synthetic minerals derived from silica and the like. Examples of such extenders include kaolinites, attapulgite clay and synthetic magnesium silicate. The wettable powders compositions of this invention usually contain from above 0.5 to 60 parts (preferably from 5-20 parts) of active ingredient, from about 0.25 to 25 parts (preferably 1-15 parts) of wetting agent, from about 0.25 to 25 parts (preferably 1.0-15 parts) of dispersant and from 5 to about 95 parts (preferably 5-50 parts) of inert solid extender, all parts being by weight of the total composition. Where required, from about 0.1 to 2.0 parts of the solid inert extender can be replaced by a corrosion inhibitor or anti-foaming agent or both.
Other formulations include dust concentrates comprising from 0.1 to 60% by weight of the active ingredient on a suitable extender; these dusts may be diluted for application at concentrations within the range of from about 0.1-10% by weight.
Aqueous suspensions or emulsions may be prepared by stirring a nonaqueous solution of a water-insoluble active ingredient and an emulsification agent with water until uniform and then homogenizing to give stable emulsion of very finely divided particles. The resulting concentrated aqueous suspension is characterized by its extremely small particle size, so that when diluted and sprayed, coverage is very uniform. Suitable concentrations of these formulations contain from about 0.1-60%, preferably 5-50% by weight of active ingredient, the upper limit being determined by the solubility limit of active ingredient in the solvent. Concentrates are usually solutions of active ingredient in water-immiscible or partially water-immiscible solvents together with a surface active agent. Suitable solvents for the active ingredient of this invention include dimethylformamide, dimethylsulfoxide, N-methyl-pyrrolidone, hydrocarbons, and water-immiscible ethers, esters, or ketones. However, other high strength liquid concentrates may be formulated by dissolving the active ingredient in a solvent then diluting, e.g., with kerosene, to spray concentration.
The concentrate compositions herein generally contain from about 0.1 to 95 parts (preferably 5-60 parts) active ingredient, about 0.25 to 50 parts. (preferably 1-25 parts) surface active agent and where required about 5 to 94 parts solvent, all parts being be weight based on the total weight of emulsifiable oil.
Granules are physically stable particulate compositions comprising active ingredient adhering to or distributed through a basic matrix of an inert, finely-divided particulate extender. In order to aid leaching of the active ingredient from the particulate extender, a surface active agent can be present in the composition. Natural clays, pyrophyllites, illite, and vermiculite are examples of operable classes of particulate mineral extenders. The preferred extenders are the porous, absorptive, preformed particles such as preformed and screened particulate attapulgite or heat expanded, particulate vermiculite and the finely-divided clays such as kaolin clays, hydrated attapulgite or bentonitic clays. These extenders are sprayed or blended with the active ingredient to form the herbicidal granules.
The granular compositions of this invention may contain from about 0.1 to about 30 parts by weight of active ingredient per 100 parts by weight of clay and 0 to about 5 parts by weight of surface active agent per 100 parts by weight of particulate clay.
The compositions of this invention can also contain other additaments, for example, fertilizers, other herbicides, other pesticides, safeners and the like used as adjuvants or in combination with any of the above-described adjuvants. Chemicals useful in combination with the active ingredients of this invention included, for example, triazines, ureas, sulfonylureas, carbamates, acetamides, acetanilides, uracils, acetic acid or phenol derivatives, thiol- carbamates, triazoles, azolopyrimidines, benzoic acid and its derivatives, nitriles, biphenyl ethers, nitrobenzenes and the like such as:
Heterocyclic Nitrogen/Sulfur Derivatives
2-Chloro-4-ethylamino-6-isopropylamino-s-triazine
2-Chloro-4,6-bis(isopropylamino)-s-triazine
2-Chloro-4,6-bis(ethylamino)-s-triazine
3-Isopropyl-1H-2,1,3-benzothiadiazin-4-(3H)-one 2,2-dioxide
3-Amino-1,2,4-triazole
6,7-Dihydrodipyrido(1,2-:2',1'-c)-pyrazidiinium salt
5-Bromo-3-isopropyl-6-methyluracil
1,1'-Dimethyl-4,4'-bypyridinium
2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-3-quinolinecarboxylic acid
Isopropylamine salt of 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid
Methyl 6-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-m-toluate and methyl 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-p-toluate
Ureas/Sulfonylureas
N-(4-Chlorophenoxy) phenyl-N,N-dimethylurea
N,N-dimethyl-N'-(3-chloro-4-methylphenyl) urea
3-(3,4-dichlorophenyl)-1,1-dimethylurea
1,3-Dimethyl-3-(2-benzothiazolyl) urea
3-(p-Chlorophenyl)-1,1-dimethylurea
1-Butyl-3-(3,4-dichlorophenyl)-1-methylurea
2-Chloro-N�(4-methoxy-6-methyl-1,3,5-triazin-2-yl) aminocarbonyl!-benzenesulfonamide
N-(2-methoxycarbonylphenyl sulfonyl()-N'-(4,6-bis-difluoromethoxypyrimidin-2-yl)urea
Methyl 2-(((((4,6-dimethyl-2-pyrimidinyl)amino)-carbonyl)amino)sulfonyl) benzoate
Ethyl 1-�methyl 2T(((((4,6-dimethyl-2-pyrimidinyl)-amino)carbonyl)amino)sulfonyl)! benzoate
Methyl-2((4,6-dimethoxy pyrimidin-2-yl)aminocarbonyl)amino sulfonyl methyl) benzoate
Methyl 2-(((((4-methoxy-6-methyl-1,3,5-triazin-2-yl)-amino)carbonyl)amino)sulfonyl) benzoate
Carbamates/Thiolcarbamates
2-Chloroallyl diethyldithiocarbamate
S-(4-chlorobenzyl)N,N-diethylthiolcarbamate
Isopropyl N-(3-chlorophenyl) carbamate
S-2,3-dichloroallyl N,N-diisopropylthiolcarbamate
S-N,N-dipropylthiolcarbamate
S-propyl N,N-dipropylthiolcarbamate
S-2,3,3-trichloroallyl-N,N-diisopropylthiolcarbamate
Acetamides/Acetanilides/Anilines/Amides
2-Chloro-N,N-diallylacetamide
N,N-dimethyl-2,2-diphenylacetamide
N-(2,4-dimethylthien-3-yl)-N-(1-methoxyprop-2-yl)-2-chloroacetamide
N-(1H-pyrazol-1-ylmethyl-N-(2,4-dimethylthien-3-yl)-2-chloroacetamide
N-(1-pyrazol-1-ylmethyl)-N-(4,6-dimethoxypyrimidin-5-yl)-2-chloroacetamide
N-(2,4-dimethyl-5-��(trifluoromethyl)sulfonyl!amino!-phenyl!acetamide
N-Isopropyl-2-chloroacetanilide
N-Isopropyl-1-(3,5,5-trimethylcyclohexen-1-yl)-2-chloroacetamide
2',6'-Diethyl-N-(butoxymethyl)-2-chloroacetanilide
2',6'-Diethyl-N-(2-n-propoxyethyl)-2-chloroacetanilide
2',6'-Dimethyl-N-(1-pyrazol-1-ylmethyl)-2-chloroacetanilide
2',6'-Diethyl-N-methoxymethyl-2-chloroacetanilide
2'-Methyl-6'-ethyl-N-(2-methoxyprop-2-yl)-2-chloroacetanilde
2'-Methyl-6'-ethyl-N-(ethoxymethyl)-2-chloroacetanilide
.alpha.,.alpha.,.alpha.-Trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine
N-(1,1-dimethylpropynyl)-3,5-dichlorobenzamide
Acids/Esters/Alcohols
2,2-Dichloropropionic acid
-Methyl-4-chlorophenoxyacetic acid
2,4-Dichlorophenoxyacetic acid
Methyl-2-�4-(2,4-dichlorophenoxy)phenoxy!propionate
3-Amino-2,5-dichlorobenzoic acid
2-Methoxy-3,6-dichlorobenzoic acid
2,3,6-Trichlorophenylacetic acid
N-1-naphthylphthalamic acid
Sodium 5-�2-chloro-4-(trifluoromethyl)phenoxy!-2-nitrobenzoate
4,6-Dinitro-o-sec-butylphenol
N-(phosphonomethyl)glycine and its salts
Butyl (R)-2-�4-�(5-(trifluoromethyl)-2-pyridinyl)oxy!-phenoxy! propanoate
Ethers
2,4-Dichlorophenol-4-nitrophenyl ether
2-Chloro-.delta., .delta., .delta.-trifluoro-p-tolyl-3-ethoxy-4-nitrodiphenyl ether
5-(2-chloro-4-trifluoromethylphenoxy)-N-methylsulfonyl 2-nitrobenazmide
1'-(Carboethoxy) ethyl 5-�2-chloro-4-(trifluoromethyl)phenoxy!-2-nitrobenzoate
Miscellaneous
2,6-Dichlorobenzonitrile
Monosodium acid methanearsonate
Disodium methanearsonate
2-(2-chlorophenyl)methyl-4,4-dimethyl-3-isoxazolidinone
7-Oxabicyclo (2.2.1) heptane, 1-methyl-4-(1-methylethyl)-2-(2-methylphenylmethoxy)-, exo
Glufosinate and salts thereof
Glyphosate and salts thereof.
Fertilizers useful in combination with the active ingredients include, for example, ammonium nitrate, urea, potash and superphosphate. Other useful additaments include materials in which plant organisms take root and grow such as compost, manure, humus, sand and the like.
Herbicidal formulations of the types described above contemplated as within the purview of this invention are exemplified in illustrative embodiments below.
______________________________________I. Emulsifiable Concentrates Weight Percent______________________________________Compound No. 8 11.60Aromatic 200 (Exxon, Houston, Texas): 78.40gamma butyrolactone (4:1)Armul 1496 (Stepan, Winder, GA) 5.00Armul 1505 (Stepan, Winder, GA) 5.00______________________________________II. Suspension Concentrate g/l______________________________________Compound No. 8 206.4Propylene glycol 40.0Atlox 4913 (ICI, Wilmington, DE) 20.0Atlox 4896 (ICI, Wilmington, DE) 10.0Rhodorsil 432R (Rhone Poulenc, 1.0Paris, France)Rhodopol 23 (Rhone Poulenc, 2.0Paris, France)Phylatol (Coalite, Derbyshire, 2.0Great Britain)Water (De-mineralised) 805.5______________________________________
When operating in accordance with the present invention, effective amounts of the compounds of this invention are applied to the soil containing the seeds, or vegetative propagules or may be incorporated into the soil media in any convenient fashion. The application of liquid and particulate solid compositions to the soil can be carried out by conventional methods, e.g., power duster, boom and hand sprayers and spray dusters. The compositions can also be applied from airplanes as a dust or a spray because of their effectiveness at low dosages. The exact amount of active ingredient to be employed is dependent upon various factors, including the plant species and stage of development thereof, the type and condition of soil, the amount of rainfall and the specific compounds employed. In elective pre-emergence application or to the soil, a dosage of from about 0.001 to about 11.2 kg/ha, preferably from about 0.01 to about 0.5 kg/ha, is usually employed. Lower or higher rates may be required in some instances. One skilled in the art can readily determine from this specification, including the above examples, the optimum rate to be applied in any particular case.
The term "soil" is employed in its broadest sense to be inclusive of all conventional "soils" as defined in Webster's New International Dictionary, Second Edition, Unabridged (1961). Thus, the term refers to any substance or medium in which vegetation may take root and grow, and includes not only earth but also compost, manure, muck, humus, loam, silt, mire, clay, sand and the like, adapted to support plant growth.
Although this invention has been described with respect to specific embodiments, the details of these embodiments are not to be construed as limitations. Various equivalents, changes and modifications may be made without departing from the spirit and scope of this invention, and it is understood that such equivalent embodiments are part of this invention.

Herbicidal substituted 3-aryl-pyrazoles

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Non-Patent Literature Citations (5)

Entry
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