Certain N-(R-sulfonyl) phosphonamidothioates and dithioates

Abstract

Compounds of the formula ##STR1## wherein the symbols have assigned meanings, and their use as insecticides and/or miticides.

Description

DESCRIPTION OF THE INVENTION

It has been found that insecticidal and acaricidal activity is possessed by compounds of the formula ##STR2## wherein X is oxygen or sulfur;

R is alkyl or alkenyl of up to twenty carbon atoms, phenyl, or phenalkyl of up to ten carbon atoms;

R.sup.1 is alkyl, or alkenyl of up to six carbon atoms, or phenalkyl of up to ten carbon atoms;

R.sup.2 is alkyl, alkenyl, alkynyl, haloalkyl or alkylthioalkyl of up to ten carbon atoms; napthyl, pyridyl, or thienyl; phenyl, or phenalkyl or phenalkenyl of up to ten carbon atoms, which may be substituted on the ring by from one to three substitutents selected from halogen, methyl, methoxy, nitro, amino, mono- and dialkylamino, and mono- and dialkylaminocarbonyl wherein each alkyl moiety contains from one to four carbon atoms;

R.sup.3 is

(a) one of the moieties represented by R.sup.2 or is ##STR3## wherein R.sup.4 is alkyl of one to four carbon atoms, phenyl, or phenalkyl of up to ten carbon atoms, R.sup.5 is hydrogen or one of the moieties represented by R.sup.4, or R.sup.4 and R.sup.5 together with the interjacent nitrogen atom represent 1-piperidino, 2-(ethoxycarbonyl)-1-piperidino, or 4-morpholino.

In these compounds, each alkyl, alkenyl, alkylene and alkenylene (as in phenalkyl and phenalkenyl) moiety may be straight-chain or branched-chain.

Compounds of Formula I can be prepared by treating a phosphonothioic or phosphonodithioic chloride of the formula: ##STR4## with an alkali metal salt of a sulfonamide of the formula ##STR5##

The treatment of the chloride (II) with a salt of the sulfonamide (III) is effected by adding the chloride at a controlled rate to a solution of the salt in an inert solvent, at a low temperature--for example, 0.degree. C.-5.degree. C.--moisture being excluded, then warming the mixture to room temperature, or somewhat above. Preferably, the chloride is added as a solution in the same solvent in which the salt is dissolved. Suitable as the solvent are organic materials such as ether and tetrahydrofuran, or acetonitrile. The product is isolated and purified by conventional procedures, as shown in the examples, hereinafter.

As is shown in U.S. Pat. No. 4,390,929, and in U.S. Pat. No. 4,190,652, the phosphonodithioic chloride precursor (II, X is sulfur) can be prepared by treating a phosphonothioic dichloride of the formula ##STR6## with an appropriate thiol, R.sup.1 -SH, in the presence of a solvent and an amine base, as hydrogen halide acceptor. Aromatic hydrocarbons, such as toluene, are suitable as the solvent. Any tertiary amine base is suitable, but the trialkylamines appear to be most suitable. Water should be excluded from the reaction mixture--as by using anhydrous reagents and conducting the treatment under nitrogen. Isolation of the product is effected by conventional techniques.

The phosphonothioic chloride precursor (II, X is oxygen) can be prepared by a method analogous to that described in U.S. Pat. No. 4,190,652 for preparing the corresponding phosphonodithioic chloride--i.e., by treating a phosphonic dichloride of the formula ##STR7## with an appropriate thiol, R.sup.1 -SH, in the presence of an inert solvent and an amine base as hydrogen chloride acceptor. Aromatic hydrocarbons, such as toluene, are suitable as the solvent. Any tertiary amine base is suitable, but the trialkylamines appear to be most suitable. Water should be excluded from the reaction mixture--as by using anhydrous reagents and conducting the treatment under nitrogen. Isolation of the product is effected by conventional techniques.

The phosphonothioic chloride (II, X is oxygen) also can be prepared by the method described by A. A. Neimysheva, et al., Journal of General Chemistry, U.S.S.R. (English), 1966, volume 36, pages 520-525--i.e., by slowly adding an appropriate sulfenyl chloride

R.sup.1 --S--Cl (VI) to a stirred solution of the appropriate phosphonous dichloride of the formula ##STR8## in sulfur dioxide at a low temperature--e.g., -15.degree. C. to -60.degree. C.--then warming the resulting mixture to room temperature, stripping it of volatiles and vacuum distilling the residue to give the product.

Those phosphonothioic chlorides (II, X is oxygen) wherein R.sup.1 is alkyl also can be prepared by treating a S,S--di--R.sup.1 R-phosphonodithioate of the formula ##STR9## wherein both of R.sup.1 are the same, with a chlorinating agent selected from sulfuryl chloride and chlorine. Suitably, the treatment is conducted by adding the chlorinating agent to a stirred solution of the dithioate in an inert solvent, at a temperature of about 0.degree.-10.degree. C. Suitable solvents are the haloalkanes, such as methylene dichloride and carbon tetrachloride. Water should be excluded from the reaction mixture--as by using anhydrous reagents and conducting the treatment under nitrogen--i.e., in a nitrogen atmosphere. Preferably a slight stoichiometric excess--up to about 10% excess--of the chlorinating agent is used, relative to the dithioate. Isolation and purification of the product is accomplished by conventional techniques. In many cases, the by-product R.sup.1 -sulfenyl chloride is a low-boiling material that is easily removed by evaporation techniques.

The dithioate precursors (formula VIII) can be prepared by known methods. Conveniently, they can be prepared by treating the appropriate alkylphosphonous dichloride (VII) in an inert solvent, with two equivalents of the appropriate thiol, R.sup.1 -SH, either in the form of its alkyl metal salt, or in the presence of two equivalents of a hydrogen chloride acceptor.

The sulfonamide precursors (III) as a class are known compounds, and the alkali metal salts thereof are prepared by conventional methods and techniques, as is demonstrated in the Examples, hereinafter. Those of the class that are novel are readily prepared by conventional methods, as by treating the appropriate sulfonyl halide, R.sup.3 --SO.sub.2 --halogen, with the appropriate amine, R.sup.2 NH.sub.2. Compounds of Formula III wherein R.sup.3 =-NR.sup.4 R.sup.5 are prepared; a method for their preparation is described by G. Weisz and G. Schulze, Annalen Der Chemic, volume 729, pages 40-51 (1969).

The preparation and isolation of particular individual species of the genus of Formula I are described in the Examples, hereinafter. Other typical individual species are the following, each identified in terms of the symbols in Formula I, in all cases X being oxygen:

______________________________________Species R R.sup.1 R.sup.2 R.sup.3______________________________________A methyl propyl methyl 1-piperidinoB ethyl 1-methyl- methyl 1-piperidino propylC ethyl propyl methyl 4-morpholinoD methyl 1-methyl- methyl 4-morpholino propylE methyl propyl methyl di-(n-butyl)aminoF ethyl 1-methyl- methyl di-(n-butyl)amino propylG ethyl propyl methyl (methyl)(phenyl)aminoH methyl 1-methyl- methyl (methyl)(phenyl)amino propylI ethyl propyl propargyl methylJ methyl 1-methyl- propargyl methyl propylK methyl propyl propargyl dimethylaminoL ethyl 1-methyl- propargyl dimethylamino propylM methyl propyl methyl 2-(ethoxycarbonyl)-1- piperidinoN ethyl 1-methyl- methyl 2-(ethoxycarbonyl)-1- propyl piperidino______________________________________

The preparation, isolation and testing of individual species of the genus of Formula I, in particular instances, are described in the following examples. In each case, the identity of each of the products, and each of the precursors, was confirmed as necessary by appropriate chemical and spectral analyses.

EXAMPLE 1

S-(1-methylpropyl) P-ethyl N-methyl-N-(methylsulfonyl)-phosphonamidothioate (1)

Under nitrogen, 30.7 ml of triethylamine was added over 10 minutes to a stirred mixture of 14.7 g of ethylphosphonic dichloride, 23.9 ml of 2-butanethiol and 125 ml of dry toluene at 5.degree.-10.degree. C. The resulting mixture was stirred at 5.degree. C. for 2 hours, then at room temperature for 15 hours, diluted with ether and filtered. The filtrate was washed with water, dried (Na.sub.2 SO.sub.4) and stripped of solvent. Hexane was added to the residue, and the mixture was washed with dilute aqueous bicarbonate solution, then with water, dried (Na.sub.2 SO.sub.4) and stripped of solvent. The residue was distilled in a Kugelrohr apparatus to give S,S-bis(1-methylpropyl)ethylphosphonodithioate (1A).

Under nitrogen, a solution of 1.64 ml of sulfuryl chloride in 10 ml of carbon tetrachloride was added drop-by-drop over 36 minutes to a stirred solution of 5.09 g of 1A in 40 ml of carbon tetrachloride at 0.degree. C. The resulting mixture was stirred at 0.degree. C. for 7 minutes, for 1.5 hours at 5.degree. C., then stripped of solvent under very low pressure, and the residue was distilled in a Kugelrohr apparatus to give S-(1-methylpropyl)ethylphosphonochloridothioate (1B), as a colorless liquid, b.p.: 70.degree. C., 0.005 Torr.

7.55 g of methylamine was added over one hour to a stirred mixture of 11.4 g of methanesulfonyl chloride and 50 ml of ether at 5.degree. C. The resulting mixture was stirred at 5.degree. C. for one hour, for 15 hours at room temperature, then filtered. The filtrate was dried (MgSO.sub.4) and stripped of solvent, to give N-methyl methanesulfonamide (1C), as a yellow liquid.

0.12 g of sodium hydride was added to a stirred mixture of 0.54 g of 1C and 10 ml of ether, at 5.degree. C. under nitrogen. The resulting mixture was stirred at room temperature for one hour, cooled to 5.degree. C. and a solution of 1 g of 1B in 3 ml of ether was added drop-by-drop, at 5.degree.-10.degree. C. The mixture was stirred for 2.5 hours at 5.degree. C., at room temperature for 24 hours, then 3 ml of tetrahydrofuran was added and the mixture was stirred for 16 hours. Then the mixture was diluted with methylene chloride, and washed with water, and the organic phase was dried (Na.sub.2 SO.sub.4) and the solvent was evaporated. The residue was vacuum-chromatographed over silica gel, using ether as eluent, to give 1, as an amber liquid.

EXAMPLE 2

S-propyl P-ethyl N-(ethylsulfonyl)-N-methylphosphonamidothioate (2)

41.0 g of sulfuryl chloride was added drop-by-drop to 25.5 ml of 1-propanethiol, with stirring, at 0.degree. C., under nitrogen. After 15 minutes, the mixture was added drop-by-drop (over 45 minutes) to 40.62 g of ethylphosphonous dichloride and 60 ml of sulfur dioxide at -70.degree. C. under nitrogen. After 20 minutes the mixture was allowed to warm to room temperature and the solvent was evaporated. The residue was distilled in a Kugelrohr apparatus to give S-propyl ethylphosphonochloridothioate (2A) as a colorless liquid, b.p.: 95.degree. C., 0.30 Torr.

2 was prepared as a yellow liquid, by treating 2A with N-methyl ethanesulfonamide (prepared from ethylsulfonyl chloride and methylamine, according to the procedure described for preparing 1C from methylsulfonyl chloride and methylamine), according to the procedure described in Example 1 for preparing 1 from 1B and 1C.

EXAMPLES 3 TO 138

The following additional individual species of the genus of Formula I, each identified in terms of the symbols used in Formula I, in all cases X being oxygen, were prepared from the appropriate reagents by the procedures described in Examples 1 and 2.

TABLE I__________________________________________________________________________Example CompoundNo. No. R R.sup.1 R.sup.2 R.sup.3 Physical State__________________________________________________________________________3 3 ethyl propyl methyl methyl Amber liquid4 4 ethyl 1-methylpropyl methyl phenyl Yellow liquid5 5 ethyl propyl methyl phenyl Yellow liquid6 6 ethyl 1-methylpropyl methyl 4-methylphenyl Amber liquid7 7 ethyl propyl methyl 4-methylphenyl Amber liquid8 8 ethyl 1-methylpropyl methyl phenyl Amber liquid9 9 ethyl 1-methylpropyl methyl 4-chlorophenyl Amber liquid10 10 ethyl 1-methylpropyl 1-methyl- phenyl Amber liquid ethyl11 11 ethyl 1-methylpropyl benzyl phenyl Yellow liquid12 12 ethyl 1-methylpropyl methyl styryl Yellow liquid13 13 ethyl 1-methylpropyl methyl 2,4,6-trimethyl- Amber liquid phenyl14 14 ethyl 1-methylpropyl methyl 2,5-dichloro- White solid, m.p.: phenyl 90-96.degree. C.15 15 ethyl 1-methylpropyl methyl 4-bromophenyl Yellow liquid16 16 ethyl 1-methylpropyl methyl 2-nitrophenyl Amber liquid17 17 ethyl 1-methylpropyl methyl 1-methylethyl Pale yellow liquid18 18 ethyl propyl methyl chloromethyl Yellow liquid19 19 ethyl propyl methyl butyl Pale yellow liquid20 20 ethyl propyl methyl 3-chloropropyl Yellow liquid21 21 ethyl propyl methyl 1-methylethyl Yellow liquid22 22 ethyl 1-methylpropyl phenyl phenyl Yellow liquid23 23 ethyl 1-methylpropyl methyl 1-naphthyl Yellow liquid24 24 ethyl 1-methylpropyl methyl 2,4,5-tri- Amber liquid chlorophenyl25 25 ethyl 1-methylpropyl methyl 4-nitrophenyl Amber liquid26 26 ethyl 1-methylpropyl methyl 4-methoxyphenyl Yellow liquid27 27 ethyl propyl methyl 2-naphthyl Yellow liquid28 28 ethyl propyl methyl 2,4,6-trimethyl- Yellow liquid phenyl29 29 ethyl propyl methyl 1-naphthyl Yellow liquid30 30 ethyl propyl methyl 2,4,5-tri- Yellow liquid chlorophenyl31 31 ethyl propyl methyl 2,5-dichloro White solid phenyl m.p.: 81.5-85.532 32 ethyl propyl methyl 2-nitrophenyl Yellow liquid33 33 ethyl propyl methyl 4-bromophenyl Yellow liquid34 34 ethyl propyl methyl 4-nitrophenyl Yellow liquid35 35 ethyl propyl methyl 4-methoxyphenyl Yellow liquid36 36 ethyl 1-methylpropyl methyl chloromethyl Yellow liquid37 37 ethyl 1-methylpropyl methyl 3-chloropropyl Yellow liquid38 38 ethyl 1-methylpropyl methyl butyl Pale yellow liquid49 39 ethyl 1-methylpropyl methyl ethyl Yellow liquid40 40 ethyl 1-methylpropyl methyl 4-chlorophenyl Yellow liquid41 41 ethyl propyl methyl benzyl Yellow liquid42 42 ethyl propyl methyl styryl Yellow liquid43 43 ethyl butyl methyl 1-methylethyl Colorless liquid44 44 methyl propyl methyl 1-methylethyl Yellow liquid45 45 methyl 1-methylpropyl methyl 2-naphthyl Yellow liquid46 46 ethyl propyl methyl phenyl Yellow liquid47 47 ethyl 2-methylpropyl methyl 1-methylethyl Pale yellow liquid48 48 ethyl 2-methylpropyl methyl 3-chlorophenyl Pale yellow liquid49 49 ethyl 2-methylpropyl methyl ethyl Pale yellow liquid50 50 ethyl hexyl methyl 1-methylethyl Colorless liquid51 51 ethyl 2-methylpropyl methyl butyl Pale yellow liquid52 52 ethyl 2-methylpropyl methyl 2-chlorophenyl Colorless liquid53 53 ethyl 1,1-dimethylethyl methyl ethyl Pale yellow liquid54 54 ethyl 1,1-dimethylethyl methyl 3-chloropropyl Pale yellow liquid55 55 ethyl 1,1-dimethylethyl methyl 1-methylethyl Yellow liquid56 56 ethyl 1,1-dimethylethyl methyl chloromethyl Colorless liquid57 57 ethyl propyl methyl dichloromethyl Yellow liquid58 58 ethyl 1-methylpropyl methyl dichloromethyl Yellow liquid59 59 ethyl propyl methyl propyl Pale yellow liquid60 60 ethyl propyl 1-methylethyl phenyl Yellow liquid61 61 ethyl propyl methyl phenyl Yellow liquid62 62 ethyl 1-methylpropyl methyl 4-fluorophenyl Amber liquid63 63 ethyl 1-methylpropyl methyl 4-iodophenyl Amber liquid64 64 ethyl 1-methylpropyl methyl 3-nitrophenyl Amber liquid65 65 ethyl 1-methylpropyl methyl 2-aminophenyl Amber liquid66 66 ethyl 1,1-dimethylpropyl methyl methyl Pale yellow liquid67 67 ethyl 1,1-dimethylpropyl methyl 1-methylethyl Pale yellow liquid68 68 ethyl propyl methyl octyl Pale yellow liquid69 69 methyl propyl methyl ethyl Pale yellow liquid70 70 methyl 1-methylpropyl methyl ethyl Pale yellow liquid71 71 ethyl 1-methylpropyl methyl 2-thienyl Amber liquid72 72 methyl propyl methyl propyl Pale yellow liquid73 73 methyl propyl methyl octyl Pale yellow liquid74 74 methyl 1-methylpropyl methyl octyl Pale yellow liquid75 75 methyl propyl methyl chloromethyl Pale yellow liquid76 76 methyl 1-methylpropyl methyl propyl Yellow liquid77 77 methyl propyl methyl 3-chloropropyl Pale yellow liquid78 78 methyl 1-methylpropyl methyl 3-chloropropyl Yellow liquid79 79 methyl 1-methylpropyl methyl chloromethyl Pale yellow liquid80 80 ethyl 1-methylpropyl methyl 2,4-dinitrophenyl Amber liquid81 81 ethyl 1-methylpropyl methyl 4-(methylamino) Yellow liquid 3-nitrophenyl82 82 ethyl 1-methylpropyl methyl 2,4,6-trimethyl Yellow liquid phenyl83 83 ethyl 1-methylpropyl methyl 3-(methylamino- Yellow gel carbonyl)phenyl84 84 ethyl propyl methyl 4-iodophenyl Yellow liquid85 85 ethyl propyl methyl 4-fluorophenyl Yellow liquid86 86 methyl propyl methyl butyl Yellow liquid87 87 methyl 1-methylpropyl methyl butyl Pale yellow liquid88 88 methyl 1-methylpropyl methyl 1-methylethyl Yellow liquid89 89 methyl propyl methyl methyl Pale yellow liquid90 90 methyl 1-methylpropyl methyl methyl Pale yellow liquid91 91 ethyl 1-methylpropyl methyl propyl Pale yellow liquid92 92 ethyl 1,1-dimethylethyl methyl methyl Pale yellow liquid93 93 ethyl propyl methyl 2,4-dinitro- Yellow liquid phenyl94 94 ethyl propyl methyl 4-(methylamino)-2- Yellow liquid nitrophenyl95 95 ethyl propyl methyl 2-aminophenyl Amber liquid96 96 ethyl propyl methyl 2-thienyl Yellow liquid97 97 ethyl 1,1-dimethylethyl methyl propyl Pale yellow liquid98 98 ethyl 1-methylpropyl methyl propyl Pale yellow liquid99 99 ethyl propyl methyl 4-fluorophenyl Yellow liquid100 100 ethyl propyl methyl 2,4,6-trimethyl- Yellow liquid phenyl101 101 ethyl 2-methylpropyl methyl methyl Very pale yellow liquid102 102 ethyl 2-methylpropyl methyl octyl Pale yellow liquid103 103 methyl propyl methyl 2-methyl-2- Very pale yellow propenyl liquid104 104 methyl 1-methylpropyl methyl 2-methyl-2- Very pale yellow propenyl liquid105 105 ethyl 1-methylpropyl methyl 2-methyl-2- Pale yellow liquid propenyl106 106 ethyl propyl methyl 3-(methylamino- Colorless liquid carbonyl)phenyl107 107 ethyl 1-methylpropyl methyl 3-pyridyl Amber liquid108 108 ethyl propyl methyl 3-pyridyl Amber liquid109 109 methyl propyl methyl phenyl Amber liquid110 110 methyl 1-methylpropyl methyl phenyl Yellow liquid111 111 methyl propyl methyl 4-bromophenyl Yellow liquid112 112 methyl 1-methylpropyl methyl 4-bromophenyl Yellow liquid113 113 methyl propyl ethyl methyl Pale yellow liquid114 114 methyl 1-methylpropyl ethyl ethyl Yellow liquid115 115 methyl propyl ethyl ethyl Very pale yellow liquid116 116 methyl 1-methylpropyl ethyl methyl Pale yellow liquid117 117 methyl 1-methylpropyl methyl methyl Pale yellow liquid118 118 methyl 1,1-dimethylethyl methyl 3-chloropropyl Pale yellow liquid119 119 methyl 1,1-dimethylethyl methyl methyl Yellow liquid120 120 methyl 1,1-dimethylethyl methyl propyl Pale yellow liquid121 121 methyl 1-methylpropyl ethyl 1-methylethyl Yellow liquid122 122 methyl 1-methylpropyl propyl 1-methylethyl Yellow liquid123 123 methyl 1-methylpropyl propyl ethyl Pale yellow liquid124 124 ethyl propyl methyl 2-methyl-2- Pale yellow liquid propenyl125 125 methyl 1,1-dimethylpropyl methyl 1-methylethyl Yellow liquid126 126 methyl propyl propyl methyl Yellow liquid127 127 methyl propyl propyl ethyl Yellow liquid128 128 methyl 2-methylpropyl methyl methyl Yellow liquid129 129 methyl 2-methylpropyl methyl propyl Yellow liquid130 130 ethyl 1,1-dimethylethyl methyl butyl Pale yellow liquid131 131 methyl propyl ethyl 1-methylethyl Yellow liquid132 132 methyl 2-methylpropyl methyl 1-methylethyl Yellow liquid133 133 methyl 1-methylpropyl methyl octyl Pale yellow liquid134 134 methyl propyl methyl 3-(ethylthio)- Yellow liquid propyl135 135 methyl 1-methylpropyl methyl 3-(ethylthio) Pale yellow liquid propyl136 136 methyl 1-methylpropyl ethyl 3-chloropropyl Yellow liquid137 137 ethyl propyl methyl 3-(ethylthio) Yellow liquid propyl138 138 ethyl 1-methylpropyl methyl 3-(ethylthio) Yellow liquid propyl__________________________________________________________________________

EXAMPLE 139

S-1,1-dimethylpropyl N,P-dimethyl-N-((1-methylethyl)sulfonyl)phosphonamidodithioate (139)

At about 0.degree. C., 17.05 g of 40% methylamine in water was added drop-by-drop to a solution of 14.25 g of 1-methylethanesulfonyl chloride in 30 ml of methylene chloride. Then the mixture was allowed to warm to room temperature, held for 2 hours, and diluted with water. The organic phase was separated, dried (Na.sub.2 SO.sub.4) and stripped of solvent to give N,1-dimethylethanesulfonamide (139A), as an amber liquid.

26.85 g of methylphosphonothioic dichloride and 18.5 ml of 1,1-dimethylpropanethiol were mixed with 25 ml of dry toluene under nitrogen. Then 15.15 g of triethylamine was added drop-by-drop to the mixture over 45 minutes, the temperature of the mixture being allowed to rise to 38.degree. C. The mixture was filtered, and the solvent was stripped from the filtrate. The residue was slurried in ether, the slurry was filtered, and the filtrate was stripped of solvent. The residue was distilled under reduced pressure in a Kugelrohr apparatus to give 1,1-dimethylpropyl methylphosphonochloridodithioate (139B), b.p.: 70.degree. C. at 0.03 Torr.

A solution of 0.95 g of 139A in 1 ml of dry THF was added drop-by-drop to a suspension of 0.37 g of sodium hydride in 4 ml of dry THF, under nitrogen, at 0.degree. C. The mixture was allowed to warm to room temperature, then after 30 minutes was cooled to 0.degree. C. and a solution of 1.5 g of 139B in 2 ml of dry THF was added drop-by-drop. The mixture was allowed to warm to room temperature and after 3 hours and 40 minutes was filtered. The solvent was stripped from the filtrate. The residue was flash chromatographed over silica gel using a 1.5:8.5 v:v mixture of ethyl acetate and a hexane as eluent, to give 139, as a yellow liquid.

EXAMPLE 140

S-1-methylpropyl P-ethyl-N-methyl-N-(phenylsulfonyl)phosphonamidodithioate (140)

With stirring at 5.degree. C., 6.8 g of 40% methylamine in water was added over 45 minutes to 17.7 g of a mixture of benzenesulfonyl chloride and 50 ml of dry THF. Then the mixture was stirred at room temperature for 5.5 hours, diluted with methylene chloride and filtered. The filtrate was washed with water, dried (Na.sub.2 SO.sub.4) and stripped of solvent. The residue was dissolved in methylene chloride, the solution was washed with water, dried and stripped of solvent to give N-methyl-benzenesulfonamide (140A), as a yellow liquid.

At 5.degree. C., under nitrogen, 34.8 ml of triethylamine was added drop-by-drop over 10 minutes to a stirred mixture of 40.75 g of ethylphosphonothioic dichloride and 22.5 g of 2-butanethiol. The resulting mixture was stirred at room temperature for 21 hours, diluted with ether, filtered, and the solvent was stripped from the filtrate. The residue was distilled in a Kugelrohr apparatus to give 1-methylpropyl ethylphosphonochloridodithioate (140B), as a yellow liquid, b.p.: 90.degree. C., 0.003 Torr.

At 5.degree. C., under nitrogen, 1.2 g of potassium tertiary-butoxide was added to a stirred solution of 1.7 g of 140A in 30 ml of acetonitrile. The mixture was stirred at room temperature for one hour, a solution of 2.25 g of 140B in 6 ml of acetonitrile was added drop-by-drop, the mixture was stirred for 3 hours and then refluxed for 4 days. The mixture was diluted with methylene chloride, washed with water, dried (Na.sub.2 SO.sub.4) was stripped of solvent. The residue was vacuum-chromatographed on silica gel, using a 9:1 v:v mixture of methylene chloride and ether as eluent. The entire product was rechromatographed over silica gel using a 1:1 v:v mixture of methylene chloride and hexane, to give 140, as a yellow liquid.

EXAMPLES 141 TO 144

The following additional individual species of the genus of Formula I, each identified in terms of the symbols used in Formula I, X being sulfur in all cases, were prepared from the appropriate reagents by the procedures described in Examples 139 and 140.

TABLE II______________________________________Ex-am- Com-ple pound PhysicalNo. No. R R.sup.1 R.sup.2 R.sup.3 State______________________________________141 141 methyl 1-methyl- methyl 1-methyl- colorless propyl ethyl liquid142 142 ethyl 1-methyl- methyl 1-methyl- colorless propyl ethyl liquid143 143 ethyl propyl methyl 1-methyl- colorless ethyl liquid______________________________________

EXAMPLE 144

S-(1-methylpropyl) P-ethyl-N-(dimethylaminosulfonyl)-N-methylphosphonamidothioate (144)

At 5.degree. C., 6.8 g of a 40% solution of methylamine in water was added over 12 minutes to a stirred mixture of 14.3 g of dimethylsulfamoyl chloride and 50 ml of methylene chloride, and the mixture was stirred at room temperature for 24 hours. The organic phase was separated, washed with water, dried (MgSO.sub.4) and stripped of solvent, to give trimethylsulfamide (144A), as a colorless liquid.

At 5.degree. C., under nitrogen, 0.24 g of sodium hydride was added to a stirred solution of 0.69 g of 144A in 15 ml of THF, then a solution of 1.1 g of 1B in 3 ml of THF was added drop-by-drop over 2 minutes. The mixture was stirred a room temperature for 5 days, diluted with methylene chloride, washed with water, dried (Na.sub.2 SO.sub.4) and stripped of solvent. The residue was vacuum chromatographed over silica gel, using a 9:1 v:v mixture of methylene chloride and ether as eluent, to give 144, as a yellow liquid.

EXAMPLES 145-147

The following additional individual species of the genus of Formula I, each identified in terms of the symbols used in Formula I, X being oxygen and R.sup.3 being dimethylamino, in all cases, were prepared from the appropriate reagents by the procedures described in Example 141.

TABLE III______________________________________Example Compound PhysicalNo. No. R R.sup.1 R.sup.2 State______________________________________145 145 ethyl propyl methyl yellow liquid146 146 methyl propyl methyl amber liquid147 147 methyl 1-methyl- methyl amber propyl liquid______________________________________

Compounds of the invention have been found to be toxic with respect to invertebrate pests, by which is meant insects of the class Insecta and related classes of arthropods, such as the acarids (e.g., mites), ticks, spiders, wood lice and the like. In particular, they have been found to be highly toxic to mites. Further, it has been found that compounds of the invention act systemically--that is, when applied to the plant, a compound of the invention penetrates into the cells and vascular system of the plant and is translocated therein and thereby disseminated throughout the plant without injury to the plant, yet effectively kills insects that chew upon tissues of the plant or suck juices from the plant. Some of the compounds act upon the insects very rapidly--i.e., they are "quick-knockdown agents", even though they may not be very toxic to the insects.

For application, a compound of the invention ordinarily is applied most effectively by formulating it with a suitable inert carrier or surface-active agent, or both. The invention, therefore, also includes compositions suitable for combatting pests, such compositions comprising an inert carrier or surface-active agent, or both, and as active ingredient at least one compound of the invention. The invention also provides a method of combatting pests at a locus, which comprises applying to that locus a compound of the invention or a pesticidal composition according to the invention.

The term "carrier" as used herein means an inert solid or liquid material, which may be inorganic or organic and of synthetic or natural origin, with which the active compound is mixed or formulated to facilitate its application to the plant, seed, soil or other object to be treated, or its storage, transport and/or handling. Any of the materials customarily employed in formulating pesticides--i.e., horticulturally acceptable adjuvants--are suitable.

Suitable solid carriers are natural and synthetic clays and silicates, for example, natural silicas such as diatomaceous earths; magnesium silicates, for example, talcs; magnesium aluminum silicates, for example, attapulgites are vermiculites; aluminum silicates, for example, kaolinites, montmorillonites and micas; calcium carbonate; calcium sulfate; synthetic hydrated silicon oxides and synthetic calcium or aluminum silicates; elements such as, for example, carbon and sulfur; natural and synthetic resins such as, for example, coumarone resins, polyvinyl chloride and styrene polymers and copolymers; bitumen; waxes such as, for example, beeswax, paraffin wax, and chlorinated mineral waxes; solid fertilizers, for example, superphosphates; and ground, naturally-occurring, fibrous materials, such as ground corncobs.

Examples of suitable liquid carriers are water, alcohols such as isopropyl alcohol and glycols; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; ethers such as cellosolves; aromatic hydrocarbons such as benzene, toluene and xylene; petroleum fractions such as kerosene, light mineral oils; chlorinated hydrocarbons such as carbon tetrachloride, perchloroethylene and trichloromethane. Also suitable are liquefied, normally vaporous and gaseous compounds. Mixtures of different liquids are often suitable.

The surface-active agent may be an emulsifying agent or a dispersing agent or a wetting agent; it may be nonionic or ionic. Any of the surface-active agents usually applied in formulating herbicides or insecticides may be used. Examples of suitable surface-active agents are the sodium and calcium salts of polyacrylic acids and lignin sulfonic acids; the condensation products of fatty acids or aliphatic amines or amides containing at least 12 carbon atoms in the molecule with ethylene oxide and/or propylene oxide; fatty acid esters of glycerol, sorbitan, sucrose or pentaerythritol; condensates of these with ethylene oxide and/or propylene oxide; condensation products of fatty alcohols or alkyl phenols, for example, p-octylphenol or p-octylcresol, with ethylene oxide and/or propylene oxide; sulfates or sulfonates of these condensation products, alkali or alkaline earth metal salts, preferably sodium salts, of sulfuric or sulfonic acid esters containing at least 10 carbon atoms in the molecule, for example, sodium lauryl sulfate, sodium secondary alkyl sulfates, sodium salts of sulfonated castor oil, and sodium alkylaryl sulfonates such as sodium dodecylbenzene sulfonate; and polymers of ethylene oxide and copolymers of ethylene oxide and propylene oxides.

The compositions of the invention may be prepared as wettable powders, dusts, granules, solutions, emulsifiable concentrates, emulsions, suspension concentrates and aerosols. Wettable powders are usually compounded to contain 25-75% by weight of active compound and usually contain, in addition to the solid carrier, 3-10% by weight of a dispersing agent, 2-15% of a surface-active agent and, where necessary, 0-10% by weight of stabilizer(s) and/or other additives such as penetrants or stickers. Dusts are usually formulated as a dust concentrate having a similar composition to that of a wettable powder but without a dispersant or surface-active agent, and are diluted in the field with further solid carrier to give a composition usually containing 0.5-10% by weight of the active compound. Granules are usually prepared to have a size between 10 and 100 BS mesh (1.676-0.152 mm), and may be manufactured by agglomeration or impregnation techniques. Generally, granules will contain 0.5-25% by weight of the active compound, 0-1% by weight of additives such as stabilizers, slow release modifiers and binding agents. Emulsifiable concentrates usually contain, in addition to the solvent and, when necessary, cosolvent, 10-50% weight per volume of the active compound, 2-20% weight per volume emulsifiers and 0-20% weight per volume of appropriate additives such as stabilizers, penetrants and corrosion inhibitors. Suspension concentrates are compounded so as to obtain a stable, non-sedimenting, flowable product and usually contain 10-75% weight of the active compound, 0.5-5% weight of dispersing agents, 1-5% of surface-active agent, 0.1-10% weight of suspending agents, such as defoamers, corrosion inhibitors, stabilizers, penetrants and stickers, and as carrier, water or an organic liquid in which the active compound is substantially insoluble; certain organic solids or inorganic salts may be dissolved in the carrier to assist in preventing sedimentation or as antifreeze agents for water.

Of particular interest in current practice are the water-dispersible granular formulations. These are in the form of dry, hard granules that are essentially dust-free, and are resistant to attrition on handling, thus minimizing the formation of dust. On contact with water, the granules readily disintegrate to form stable suspensions of the particles of active material. Such formulations contain 90% or more by weight of finely divided active material, 3-7% by weight of a blend of surfactants, which act as wetting, dispersing, suspending and binding agents, and 1-3% by weight of a finely divided carrier, which acts as a resuspending agent.

Aqueous dispersions and emulsions, for example, compositions obtained by diluting a wettable powder or a concentrate according to the invention with water, also lie within the scope of the present invention. The said emulsions may be of the water-in-oil or of the oil-in-water type, and may have thick, mayonnaise-like consistency.

It is evident from the foregoing that this invention contemplates compositions containing as little as about 0.0001% by weight to as much as about 95% by weight of a compound of the invention as the active ingredient.

The compositions of the invention may also contain other ingredients, for example, other compounds possessing pesticidal, especially insecticidal, acaricidal or fungicidal properties, as are appropriate to the intended purpose.

The method of applying a compound of the invention to control pests comprises applying the compound, ordinarily in a composition of one of the aforementioned types, to a locus or area to be protected from the insects, such as the foliage and/or the fruit of plants. The compound, of course, is applied in an amount sufficient to effect the desired action. This dosage is dependent upon many factors, including the carrier employed, the method and conditions of the application, whether the formulation is present at the locus in the form of an aerosol, or as a film, or as discrete particles, the thickness of film or size of particles, and the like. Proper consideration and resolution of these factors to provide the necessary dosage of the active compound at the locus to be protected are within the skill of those versed in the art. In general, however, the effective dosage of the compound of the invention at the locus to be protected--i.e., the dosage which the insect contacts--is of the order of 0.001 to 0.5% based on the total weight of the formulation, though under some circumstances the effective concentration will be as little as 0.0001% or as much as 2%, on the same basis.

Activity of compounds of the invention with respect to insect and acarine pests was determined by using standardized test methods to measure the toxicity of the compounds as follows:

I. Houseflies (Musca domestica (Linne)) were tested by placing 50 4- to 5-day old adult houseflies into a spray cage and spraying with 0.6 ml of a solution of test compound. After spraying, the flies were observed to ascertain any knockdown effect, and then were anesthetized with CO.sub.2 and transferred to a recovery cage containing a milk pad for food. The cages were held for 18-20 hours after which mortality counts were made. Both dead and moribund flies were counted. The tests were conducted employing several different dosage rates for each test compound.

II. Pea aphids (Acyrthosiphon pisum (Harris)) were tested by placing about 100 adult aphids on broad bean plants. The plants were sprayed with dilutions of an acetone solution of the test compound in water containing an emulsifier and held under laboratory conditions for 18 to 20 hours, at which time the living aphids on the plants were counted. The tests were conducted employing several different dosage rates for each test compound.

III. Adult female two-spotted spider mites (Tetranychus urticae (Koch)) were tested by placing 50-75 mites on the bottom side of leaves of pinto bean plants. The leaves were sprayed with dilutions of an acetone solution of the test compound in water containing an emulsifier and kept under laboratory conditions for about 20 hours, at which time mortality counts were made. The tests were conducted employing several different dosage rates for each compound.

IV. Third instar corn earworm larvae (Heliothis zea (Boddie)) were tested by spraying broad bean plants with dilutions of an acetone solution of the test compound in water containing an emulsifier. Immediately after spraying, 5 larvae were transferred to the plant and held for 44-46 hours, at which time the dead and moribund larvae were counted. The tests were conducted employing several different dosage rates for each test compound.

In each set of tests, identical tests were conducted using parathion as a standard for comparison.

In each instance, the toxicity of the test compound was compared to that of a standard pesticide, parathion, the relative toxicity of the test compound then being expressed in terms of the relationship between the amount of the test compound and the amount of the standard pesticide required to produce the same percentage (50%) of mortality in the test insects. By assigning the standard pesticide an arbitrary rating of 100, the toxicity of the test compound was expressed in terms of the Toxicity Index, which compares the toxicity of the test compound of the invention with that of the standard pesticide. That is to say, a test compound having a Toxicity Index of 50 would be half as active, while one having a Toxicity Index of 200 would be twice as active, as the standard pesticide. The results are set forth in Table IV.

TABLE IV______________________________________ Toxicity IndexCompound Pea Corn SpiderNumber Housefly Aphid Earworm Mite______________________________________1 30K.sup.(a) 30K 30.sup. 21002 25K.sup. 20K 60.sup. 23003 40K.sup. 10K 35.sup. 24004 30K.sup. 25K 10.sup. 120005 10K.sup. 10.sup. 55.sup. 32006 10 .sup. 20K 0.sup. 5207 0 .sup. 10K 0.sup. 3708 30K.sup. 100.sup. 15.sup. 38009 30K.sup. 70.sup. 45.sup. 260010 25K.sup. 30K 20.sup. 150011 30K.sup. 150K 10.sup. 85012 15K.sup. 50K 20.sup. 100013 10K.sup. 35K 10.sup. 47014 15K.sup. 25K 10.sup. 230015 15K.sup. 25K 10.sup. 1750016 30K.sup. 25K 10.sup. 65017 25K.sup. 30.sup. 40.sup. 140018 30K.sup. 25K 15.sup. 350019 20K.sup. 10K 5.sup. 410020 20K.sup. 15.sup. 10.sup. 500021 15K.sup. 10.sup. 15.sup. 700022 10K.sup. 15K 10.sup. 100023 <5K.sup. 15K 5.sup. 110024 <5K.sup. 15K 10.sup. 50025 5K.sup. 5K 5.sup. 75026 10K.sup. 35K 0.sup. 75027 0 .sup. 5.sup. 0.sup. 44028 0 .sup. 5.sup. 0.sup. 5029 0 .sup. 5.sup. 0.sup. 46030 <5 .sup. 5.sup. 0.sup. 80031 <5K.sup. 5.sup. 0.sup. 510032 10K.sup. <5K 0.sup. 54033 <5 .sup. 5K 10.sup. 240034 < 5 .sup. <5.sup. 0.sup. 65535 <5 .sup. 5.sup. 0.sup. 42536 20K.sup. 15K 5.sup. 220037 15K.sup. 25K 5.sup. 220038 20K.sup. 60.sup. 5.sup. 320039 20K.sup. 60.sup. 10.sup. 220040 15K.sup. 20K 5.sup. 290041 10K.sup. 20.sup. 15.sup. 290042 5K.sup. 10K 5.sup. 120043 0 .sup. 5K 0.sup. 34044 10K.sup. 10K 280.sup. 420045 <5K.sup. 10K 10.sup. 90046 <5K.sup. 5K 5.sup. 85047 5K.sup. 10K 0.sup. 90048 5 .sup. 120K 0.sup. 100049 5K.sup. 60K 30.sup. 43050 0 .sup. <5.sup. 0.sup. 4551 5K.sup. 30K 0.sup. 100052 15K.sup. 30K 5.sup. 490053 15K.sup. 45K 95.sup. 80054 5K.sup. 30K 15.sup. 250055 10K.sup. 45K 35.sup. 100056 15K.sup. 40K 35.sup. 300057 5K.sup. 10.sup. 5.sup. 320058 15K.sup. 20.sup. 0.sup. 460059 10K.sup. 15.sup. 65.sup. 510060 0 .sup. 5.sup. 0.sup. 150061 <5 .sup. 5.sup. 10.sup. 35062 15K.sup. 40.sup. 10.sup. 480063 5K.sup. 30.sup. 20.sup. 280064 10K.sup. 10.sup. 15.sup. 510065 10K.sup. 10.sup. 0.sup. 29066 30K.sup. 90.sup. 15K 120067 25K.sup. 120.sup. 15.sup. 170068 0 .sup. 0.sup. 0.sup. 510069 10K.sup. 20.sup. 160.sup. 450070 15K.sup. 10.sup. 160K 230071 10K.sup. 50.sup. 0.sup. 240072 10K.sup. 35.sup. 115K 240073 0 .sup. <5.sup. 0.sup. 50074 <5K.sup. 45.sup. 30.sup. 65075 10K.sup. 25.sup. 35K 240076 20K.sup. 85.sup. 35.sup. 380077 10K.sup. 10.sup. 20.sup. 550078 10K.sup. 35.sup. 70.sup. 550079 20K.sup. 130K 20.sup. 180080 <5 .sup. 0.sup. 0.sup. 26081 <5 .sup. <5.sup. <5.sup. 65082 <5 .sup. <5.sup. 0.sup. 65083 <5 .sup. 5.sup. 0.sup. 45084 <5K.sup. 5.sup. 10.sup. 170085 <5K.sup. 0.sup. 10.sup. 130086 <5K.sup. 5.sup. 30.sup. 160087 10K.sup. 20K 20.sup. 430088 15K.sup. 20K 40.sup. 830089 15K.sup. 15K 110.sup. 120090 20K.sup. 20K 130.sup. 230091 5K.sup. 15K 0.sup. 280092 15K.sup. 30K 75.sup. 160093 <5 .sup. 0.sup. 0.sup. 8594 0 .sup. 0.sup. 5.sup. 46095 0 .sup. 0.sup. 0.sup. 6096 5 .sup. 10.sup. 0.sup. 530097 5K.sup. 10.sup. 25.sup. 480098 10K.sup. 20.sup. 15.sup. 790099 <5 .sup. 5.sup. 30.sup. 4800100 0 .sup. 5.sup. 0.sup. 2300101 10K.sup. 25.sup. 0.sup. 3200102 < 5K.sup. 10.sup. 0.sup. 2700103 <5K.sup. 5.sup. 10.sup. 2000104 5K.sup. 20.sup. 10.sup. 1700105 10K.sup. 40.sup. 0.sup. 4100106 <5K.sup. <5.sup. 0.sup. 475107 5K.sup. 20.sup. 0.sup. 3000108 5K.sup. 10.sup. 10.sup. 2000109 5K.sup. 30.sup. 55.sup. 3300110 5 .sup. 75.sup. 25.sup. 4300111 75 .sup. 5.sup. 20.sup. 1100112 5 .sup. 20.sup. 20.sup. 1800113 10 .sup. 20.sup. 120.sup. 1700114 10 .sup. 30.sup. 70.sup. 1800115 5 .sup. 15.sup. 90.sup. 2400116 10 .sup. 120.sup. 35.sup. 750117 10 .sup. 25.sup. 20.sup. 1000118 5 .sup. 60.sup. 15.sup. 1600119 10 .sup. 30.sup. 20.sup. 600120 15 .sup. 120.sup. 10.sup. 100121 10 .sup. 40.sup. 30.sup. 750122 20K.sup. 85K 30K 2600123 20K.sup. 65K 20K 5300124 10K.sup. 25K <5.sup. 3300125 20K.sup. 95K 30.sup. 3500126 20K.sup. 25.sup. 35.sup. 1900127 20K.sup. 40K 35K 6200128 25K.sup. 70K 100K 3500129 20K.sup. 70K 70K 2400130 5K.sup. 30.sup. 5K 800131 10K.sup. 45.sup. 25K 1100132 20K.sup. 50.sup. 35.sup. 500133 5K.sup. 25.sup. 0.sup. 1700134 5K.sup. 30.sup. 25.sup. 800135 20K.sup. 60.sup. 40.sup. 1100139 10K.sup. 30K 20.sup. 240140 <5 .sup. 10.sup. 0.sup. 280141 10K.sup. 15K 30.sup. 240142 5K.sup. 60K 5.sup. 45143 5 .sup. 15.sup. 10.sup. 430144 20K.sup. 100.sup. 20.sup. 2800145 5K.sup. 20.sup. 25.sup. 1200146 15 .sup. 60.sup. 20.sup. 1100147 15 .sup. 40.sup. 80.sup. 1900______________________________________ .sup.(a) K indicates "rapid knockdown

Additional compounds of this invention are those of Formula I wherein R, R.sup.1, R.sup.2 and R.sup.3 are as defined in Table V.

TABLE V______________________________________Com- Phys-pound ical*No. R R.sup.1 R.sup.2 R.sup.3 State______________________________________148 CH.sub.3 n-C.sub.3 H.sub.7 C.sub.2 H.sub.5 CH.sub.3 P Y L149 CH.sub.3 sec-C.sub.4 H.sub.9 C.sub.2 H.sub.5 C.sub.2 H.sub.5 Y L150 CH.sub.3 n-C.sub.3 H.sub.7 C.sub.2 H.sub.5 C.sub.2 H.sub.5 P Y L151 CH.sub.3 sec-C.sub.4 H.sub.9 C.sub.2 H.sub.5 CH.sub.3 P Y L152 CH.sub.3 sec-C.sub.4 H.sub.9 n-C.sub.3 H.sub.7 CH.sub.3 P Y L153 CH.sub.3 tert-C.sub.5 H.sub.11 CH.sub.3 3-chloro-propyl Y L154 CH.sub.3 tert-C.sub.5 H.sub.11 CH.sub.3 CH.sub.3 Y L155 CH.sub.3 tert-C.sub.5 H.sub.11 CH.sub.3 n-C.sub.3 H.sub.7 P Y L156 CH.sub.3 sec-C.sub.4 H.sub.9 C.sub.2 H.sub.5 iso-C.sub.3 H.sub.7 Y L157 CH.sub.3 sec-C.sub.4 H.sub.9 n-C.sub.3 H.sub.7 iso-C.sub.3 H.sub.7 Y L158 CH.sub.3 sec-C.sub.4 H.sub.9 n-C.sub.3 H.sub.7 C.sub.2 H.sub.5 P Y L159 C.sub.2 H.sub.5 n-C.sub.3 H.sub.7 CH.sub.3 2-methyl-1- P Y L propene160 CH.sub.3 tert-C.sub.5 H.sub.11 CH.sub.3 iso-C.sub.3 H.sub.7 Y L161 CH.sub.3 C.sub.3 H.sub.7 n-C.sub.3 H.sub.7 CH.sub.3 Y L162 CH.sub.3 C.sub.3 H.sub.7 n-C.sub.3 H.sub.7 C.sub.2 H.sub.5 Y L163 CH.sub.3 iso-C.sub.4 H.sub.9 CH.sub.3 CH.sub.3 Y L164 CH.sub.3 iso-C.sub.4 H.sub.9 CH.sub.3 C.sub.3 H.sub.7 Y L165 C.sub.2 H.sub.5 tert-C.sub.4 H.sub.9 CH.sub.3 n-C.sub.4 H.sub.9 P Y L166 CH.sub.3 n-C.sub.3 H.sub.7 C.sub.2 H.sub.5 iso-C.sub.3 H.sub.7 Y L167 CH.sub.3 iso-C.sub.4 H.sub.9 CH.sub.3 iso-C.sub.3 H.sub.7 Y L168 C.sub.2 H.sub.5 sec-C.sub.4 H.sub.9 CH.sub.3 n-C.sub.8 H.sub.17 P Y L169 CH.sub.3 n-C.sub.3 H.sub.7 CH.sub.3 3-ethylthio-propyl Y L170 CH.sub.3 sec-C.sub.4 H.sub.9 CH.sub.3 3-ethylthio-propyl P Y L171 C.sub.2 H.sub.5 tert-C.sub.4 H.sub.9 CH.sub.3 phenyl Y L172 CH.sub.3 tert-C.sub.4 H.sub.9 CH.sub.3 phenyl Solid mp 95.degree. to 101.degree. C.173 CH.sub.3 sec-C.sub.4 H.sub.9 CH.sub.3 3-chloropropyl Y L174 C.sub.2 H.sub.5 n-C.sub.3 H.sub.7 CH.sub.3 3-ethylthiopropyl Y L175 C.sub.2 H.sub.5 sec-C.sub.4 H.sub.9 CH.sub.3 3-ethylthiopropyl Y L176 C.sub.2 H.sub.5 iso-C.sub.4 H.sub.9 CH.sub.3 dimethylamino Y L177 CH.sub.3 tert-C.sub.4 H.sub.9 CH.sub.3 dimethylamino Y L178 CH.sub.3 iso-C.sub.4 H.sub.9 CH.sub.3 dimethylamino Y L179 C.sub.2 H.sub.5 tert-C.sub.4 H.sub.9 CH.sub.3 dimethylamino Y L180 C.sub.2 H.sub.5 n-C.sub.3 H.sub.7 C.sub.2 H.sub.5 dimethylamino Y L181 C.sub.2 H.sub.5 tert-C.sub.4 H.sub.9 C.sub.2 H.sub.5 dimethylamino Y L182 C.sub.2 H.sub.5 sec-C.sub.4 H.sub.9 C.sub.2 H.sub.5 dimethylamino Y L183 C.sub.2 H.sub.5 sec-C.sub.4 H.sub.9 CH.sub.3 4-morpholino B L184 C.sub.2 H.sub.5 sec-C.sub.4 H.sub.9 CH.sub.3 piperidino B L185 CH.sub.3 tert-C.sub.4 H.sub.9 C.sub.2 H.sub.5 dimethylamino Y L186 CH.sub.3 n-C.sub.3 H.sub.7 C.sub.2 H.sub.5 dimethylamino Y L187 C.sub.2 H.sub.5 tert-C.sub.4 H.sub.9 CH.sub.3 4-morpholino Y L188 CH.sub.3 tert-C.sub.4 H.sub.9 CH.sub.3 4-morpholino Y L189 CH.sub.3 iso-C.sub.4 H.sub.9 CH.sub.3 4-morpholino Y L190 CH.sub.3 tert-C.sub.4 H.sub.9 CH.sub.3 piperidino Y L191 CH.sub.3 iso-C.sub.4 H.sub.9 CH.sub.3 piperidino Y L192 CH.sub.3 tert-C.sub.5 H.sub.11 CH.sub.3 4-morpholino Y L193 CH.sub.3 tert-C.sub.5 H.sub.11 CH.sub.3 piperidino Y L194 CH.sub.3 tert-C.sub.5 H.sub.11 CH.sub.3 dimethylamino Y L195 C.sub.2 H.sub.5 tert-C.sub.5 H.sub.11 C.sub.2 H.sub.5 dimethylamino Y L196 C.sub.2 H.sub.5 tert-C.sub.5 H.sub.11 CH.sub.3 dimethylamino Y L______________________________________ *P Y L = Pale Yellow Liquid Y L = Yellow Liquid B L = Brown Liquid

Systemic Activity Tests

Systemic activity of compounds of Formula I was determined as follows:

Mite Tests

The roots of pinto bean plants (Phaseolus vulgaris) in the primary leaf stage were placed in a flask containing water plus the test chemical. The stem of the plant was wrapped with non-absorbent cotton fitted snugly into the neck of the flask, to prevent possible fumigant action by the test chemical. Then the plant was infested with 50-100 adult female two-spotted spider mites, held for 48 hours at 85.degree. F., and 50% relative humidity when mortality in the mites was determined visually. A series of different dosages of the test compound in the water were used, and the LC.sub.50 dosage (the dosage in parts per million by weight of the test chemical in the water required to effect fifty percent kill of the mites) was determined.

Compounds Nos. 1, 2, 3, 5, 17, 18, 19, 21, 26, 36, 37, 39, 44, 48, 51-59, 62, 64, 66, 67, 69-72, 75-79, 86-92, 96-99, 101, 103-105, 107-110, 120, 122-129, 131, 135 and 144-147 were found to have significant activity.

Aphid Tests

Broad bean plants in the 6 to 8 leaf stage were removed from pots and their roots were washed free of soil. Each was placed in a flask containing 100 ml of a water solution of the test compound. The plant stems were wrapped with non-absorbent cotton fitted snugly into the neck of the flask to prevent possible fumigant action by the test compound. The flask was positioned under a wooden stage with the stem of the plant extending up through a slot in the stage. A 6".times.6" square of paper was placed flat on the stage around the stem of the plant. A plastic ring 5 inches in diameter and 2 inches high, coated on the inside with petroleum jelly, was placed around the plant to prevent the aphids from escaping. 50 to 100 aphids were placed within each ring. Then the plant was held for 48 hours at 85.degree. F., and 50% relative humidity when mortality in the mites was determined visually. A series of different dosages of the test compound in the water were used, and the LC.sub.50 dosage (the dosage in parts per million by weight of the test chemical in the water required to effect fifty percent kill of the aphids) was determined.

Compounds Nos. 1, 3, 17, 18, 21, 39, 44, 48, 52, 55, 56, 59, 66, 69, 71, 72, 75-79, 86-92, 97, 98, 101, 105, 107, 110, 114, 116, 122-129, 131, 133-135, 144 and 147 were found to have significant activity.

Claims

1. A compound of the formula: ##STR10## wherein X is oxygen or sulfur; R is alkyl or alkenyl of up to twenty carbon atoms, phenyl or phenalkyl of up to ten carbon atoms;

R.sup.1 is alkyl, or alkenyl of up to six carbon atoms, or phenalkyl of up to ten carbon atoms;

R.sup.2 is alkyl, alkenyl, alkynyl, haloalkyl or alkylthioalkyl of up to ten carbon atoms; napthyl, pyridyl, or thienyl; phenyl, or phenalkyl or phenalkenyl of up to ten carbon atoms, which may be substituted on the ring by from one to three substituents selected from halogen, methyl, methoxy, nitro, amino, mono- and dialkylamino, and mono- and dialkylaminocarbonyl wherein each alkyl moiety contains from one to four carbon atoms;

R.sup.3 is

(a) one of the moieties represented by R.sup.2 or is ##STR11## wherein R.sup.4 is alkyl of one to four carbon atoms, phenyl, or phenalkyl of up to ten carbon atoms, R.sup.5 is hydrogen or one of the moieties represented by R.sup.4, or R.sup.4 and R.sup.5 together with the interjacent nitrogen atom represent 1-piperidino, 2-(ethoxycarbonyl)-1-piperidino, or 4-morpholino.

2. A method for controlling insects and/or acarids at a locus that comprises subjecting them to an effective dosage of a compound of claim 1.

3. A composition adapted to the control of insects and acarid that comprises an effective amount of a compound of claim 1 together with a carrier and a surface-active agent.