Herbicidal or fungicidal sulphonylaminocarbonyltriazolinones with halogenated alk(en)oxy substituents

Abstract

The invention relates to novel sulphonylaminocarbonyltriazolinones having halogenoalkoxy substituents of the formula (I) ##STR1## in which R.sup.1 represents hydrogen, hydroxyl, amino, alkylideneamino or a respectively optionally substituted radical from the group consisting of alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkylamino, dialkylamino, alkanoylamino, cycloalkyl, cycloalkylalkyl, cycloalkylamino, aryl and arylalkyl,R.sup.2 represents respectively halogen-substituted alkyl or alkenyl, andR.sup.3 represents a respectively optionally substituted radical from the group consisting of alkyl, aralkyl, aryl and heteroaryl,and salts of compounds of the formula (I), and to processes and novel intermediates for preparing the compounds (I), and to their use as herbicides and/or fungicides.

Description

The invention relates to novel sulphonylaminocarbonyltriazolinones having halogenoalkoxy substituents, to a plurality of processes and to novel intermediates for their preparation and to their use as herbicides and fungicides.

Certain sulphonylaminocarbonyltriazolinones are known to have herbicidal properties (cf. EP-A 34148, EP-A 422469, EP-A 425948, EP-A 431291, EP-A 507171). However, the activity of these compounds is not in all aspects satisfactory.

This invention, then, provides sulphonylaminocarbonyltriazolinones having halogenoalkoxy substituents of the general formula (I) ##STR2## in which

R.sup.1 represents hydrogen, hydroxyl, amino, alkylideneamino or a respectively optionally substituted radical from the group consisting of alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkylamino, dialkylamino, alkanoylamino, cycloalkyl, cycloalkylalkyl, cycloalkylamino, aryl and arylalkyl, R.sup.2 represents respectively halogen-substituted alkyl or alkenyl, and R.sup.3 represents a respectively optionally substituted radical from the group consisting of alkyl, aralkyl, aryl and heteroaryl, and salts of the compounds of the formula (I).

The novel sulphonylaminocarbonyltriazolinones having halogenoalkoxy substituents of the general formula (I) are obtained when

(a) triazolinones of the general formula (II) ##STR3## in which R.sup.1 and R.sup.2 are each as defined above are reacted with sulphonyl isocyanates of the general formula (III) R.sup.3 --SO.sub.2 --N.dbd.C.dbd.O (III) in which R.sup.3 is as defined above, if appropriate in the presence of a reaction auxiliary and if appropriate in the presence of a diluent, or (b) triazolinone derivatives of the general formula (IV) ##STR4## in which R.sup.1 and R.sup.2 are each as defined above, and Z represents halogen, alkoxy, aralkoxy or aryloxy, are reacted with sulphonamides of the general formula (V) R.sup.3 --SO.sub.2 --NH.sub.2 (V) in which R.sup.3 is as defined above, if appropriate in the presence of an acid acceptor and if appropriate in the presence of a diluent, or (c) triazolinones of the general formula (II) ##STR5## in which R.sup.1 and R.sup.2 are each as defined above are reacted with sulphonamide derivatives of the general formula (VI) R.sup.3 --SO.sub.2 --NH--CO-Z (VI) in which R.sup.3 is as defined above, and Z represents halogen, alkoxy, aralkoxy or aryloxy, if appropriate in the presence of an acid acceptor and if appropriate in the presence of a diluent, or (d) triazolinones of the general formula (II) ##STR6## in which R.sup.1 and R.sup.2 are each as defined above are reacted with sulphonyl halides of the general formula (VII) R.sup.3 --SO.sub.2 --X (VII) in which R.sup.3 is as defined above and X represents halogen and metal cyanates of the general formula (VIII) MOCN (VIII) in which M represents an alkali metal equivalent or an alkaline earth metal equivalent, if appropriate in the presence of a reaction auxiliary and if appropriate in the presence of a diluent, and, if appropriate, the compounds of the formula (I) obtained by process (a), (b), (c) or (d) are converted by customary methods into salts.

The novel sulphonylaminocarbonyltriazolinones having halogenoalkoxy substituents of the general formula (I) have a strong herbicidal and/or fungicidal activity.

The invention preferably provides compounds of the formula (I) in which

R.sup.1 represents hydrogen, hydroxyl, amino, C.sub.1 -C.sub.6 -alkylideneamino, optionally fluorine-, chlorine-, bromine-, cyano-, C.sub.1 -C.sub.4 -alkoxy-, C.sub.1 -C.sub.4 -alkyl-carbonyl- or C.sub.1 -C.sub.4 -alkoxy-carbonyl-substituted C.sub.1 -C.sub.6 -alkyl, respectively optionally fluorine-, chlorine- and/or bromine-substituted C.sub.2 -C.sub.6 -alkenyl or C.sub.2 -C.sub.6 -alkynyl, respectively optionally fluorine- and/or chlorine-substituted C.sub.1 -C.sub.6 -alkoxy or C.sub.2 -C.sub.6 -alkenyloxy, respectively optionally fluorine- and/or chlorine-substituted C.sub.1 -C.sub.6 -alkylamino, di-(C.sub.1 -C.sub.4 -alkyl)-amino or C.sub.1 -C.sub.4 -alkanoylamino, respectively optionally fluorine-, chlorine-, bromine- and/or C.sub.1 -C.sub.4 -alkyl-substituted C.sub.3 -C.sub.6 -cycloalkyl or C.sub.3 -C.sub.6 -cycloalkyl-C.sub.1 -C.sub.4 -alkyl, or respectively optionally fluorine-, chlorine-, bromine-, cyano-, nitro-, C.sub.1 -C.sub.4 -alkyl-, trifluoromethyl-, C.sub.1 -C.sub.4 -alkoxy- and/or C.sub.1 -C.sub.4 -alkoxy-carbonyl-substituted phenyl or phenyl-C.sub.1 -C.sub.4 -alkyl, R.sup.2 represents respectively fluorine-, chlorine- and/or bromine-substituted C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.6 -alkenyl, and R.sup.3 represents the grouping ##STR7## in which R.sup.4 and R.sup.5 are identical or different and each represent hydrogen, fluorine, chlorine, bromine, iodine, nitro, C.sub.1 -C.sub.6 -alkyl (which is optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.4 -alkylamino-carbonyl, di-(C.sub.1 -C.sub.4 -alkyl)-amino-carbonyl, hydroxyl, C.sub.1 -C.sub.4 -alkoxy, formyloxy, C.sub.1 -C.sub.4 -alkyl-carbonyloxy, C.sub.1 -C.sub.4 -alkoxy-carbonyloxy, C.sub.1 -C.sub.4 -alkylamino-carbonyloxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -alkylsulphinyl, C.sub.1 -C.sub.4 -alkylsulphonyl, di-(C.sub.1 -C.sub.4 -alkyl)-aminosulphonyl, C.sub.3 -C.sub.6 -cycloalkyl or phenyl), or C.sub.2 -C.sub.6 -alkenyl (which is optionally substituted by fluorine, chlorine, bromine, cyano, C.sub.1 -C.sub.4 -alkoxy-carbonyl, carboxyl or phenyl), or C.sub.2 -C.sub.6 -alkynyl (which is optionally substituted by fluorine, chlorine, bromine, cyano, C.sub.1 -C.sub.4 -alkoxy-carbonyl, carboxyl or phenyl), or C.sub.1 -C.sub.4 -alkoxy (which is optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C.sub.1 -C.sub.4 -alkoxy-carbonyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -alkylsulphinyl or C.sub.1 -C.sub.4 -alkylsulphonyl), or C.sub.1 -C.sub.4 -alkylthio (which is optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C.sub.1 -C.sub.4 -alkoxy-carbonyl, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -alkylsulphinyl or C.sub.1 -C.sub.4 -alkylsulphonyl), or C.sub.2 -C.sub.6 -alkenyloxy (which is optionally substituted by fluorine, chlorine, bromine, cyano or C.sub.1 -C.sub.4 -alkoxy-carbonyl), or C.sub.2 -C.sub.6 -alkenylthio (which is optionally substituted by fluorine, chlorine, bromine, cyano, nitro, C.sub.1 -C.sub.3 -alkylthio or C.sub.1 -C.sub.4 -alkoxycarbonyl), C.sub.3 -C.sub.6 -alkynyloxy, C.sub.3 -C.sub.6 -alkynylthio or the radical --S(O).sub.p --R.sup.6, where p represents the numbers 1 or 2, and R.sup.6 represents C.sub.1 -C.sub.4 -alkyl (which is optionally substituted by fluorine, chlorine, bromine, cyano or C.sub.1 -C.sub.4 -alkoxy-carbonyl), C.sub.3 -C.sub.6 -alkenyl, C.sub.3 -C.sub.6 -alkynyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkylamino, C.sub.1 -C.sub.4 -alkylamino, di-(C.sub.1 -C.sub.4 -alkyl)-amino, phenyl or the radical --NHOR.sup.7, where R.sup.7 represents C.sub.1 -C.sub.12 -alkyl (which is optionally substituted by fluorine, chlorine, cyano, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -alkylsulphinyl, C.sub.1 -C.sub.4 -alkylsulphonyl, C.sub.1 -C.sub.4 -alkyl-carbonyl, C.sub.1 -C.sub.4 -alkoxy-carbonyl, C.sub.1 -C.sub.4 -alkylamino-carbonyl or di-(C.sub.1 -C.sub.4 -alkyl)-amino-carbonyl), or C.sub.3 -C.sub.6 -alkenyl (which is optionally substituted by fluorine, chlorine or bromine), C.sub.3 -C.sub.6 -alkynyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.3 -C.sub.6 -cycloalkyl-C.sub.1 -C.sub.2 -alkyl, phenyl-C.sub.1 -C.sub.2 -alkyl (which is optionally substituted by fluorine, chlorine, nitro, cyano, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkoxy-carbonyl), or benzhydryl or phenyl (which is optionally substituted by fluorine, chlorine, nitro, cyano, C.sub.1 -C.sub.4 -alkyl, trifluoromethyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.2 -fluoroalkoxy, C.sub.1 -C.sub.4 -alkylthio, trifluoromethylthio or C.sub.1 -C.sub.4 -alkoxycarbonyl), R.sup.4 and/or R.sup.5 further represent phenyl or phenoxy, or C.sub.1 -C.sub.4 -alkylcarbonylamino, C.sub.1 -C.sub.4 -alkoxy-carbonylamino, C.sub.1 -C.sub.4 -alkylaminocarbonyl-amino, di-(C.sub.1 -C.sub.4 -alkyl)-amino-carbonylamino, or the radical --CO--R.sup.8, where R.sup.8 represents hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.3 -C.sub.6 -cycloalkoxy, C.sub.3 -C.sub.6 -alkenyloxy, C.sub.3 -C.sub.6 -alkynyloxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -alkylamino, C.sub.1 -C.sub.4 -alkoxyamino, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkylamino or di-(C.sub.1 -C.sub.4 -alkyl)-amino (each of which is optionally substituted by fluorine and/or chlorine), R.sup.4 and/or R.sup.5 further represent trimethylsilyl, thiazolinyl, C.sub.1 -C.sub.4 -alkylsulphonyloxy, di-(C.sub.1 -C.sub.4 -alkyl)-aminosulphonylamino or the radical --CH.dbd.N--R.sup.9, where R.sup.9 represents optionally fluorine-, chlorine-, cyano-, carboxyl-, C.sub.1 -C.sub.4 -alkoxy-, C.sub.1 -C.sub.4 -alkylthio-, C.sub.1 -C.sub.4 -alkylsulphinyl- or C.sub.1 -C.sub.4 -alkylsulphonyl-substituted C.sub.1 -C.sub.6 -alkyl, or optionally fluorine- or chlorine-substituted benzyl, or optionally fluorine- or chlorine-substituted C.sub.3 -C.sub.6 -alkenyl or C.sub.3 -C.sub.6 -alkynyl, or optionally fluorine-, chlorine-, bromine-, C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy-, trifluoromethyl-, trifluoromethoxy- or trifluoromethylthio-substituted phenyl, or optionally fluorine- and/or chlorine-substituted C.sub.1 -C.sub.6 -alkoxy, C.sub.3 -C.sub.6 -alkenoxy, C.sub.3 -C.sub.6 -alkinoxy or benzyloxy, or amino, C.sub.1 -C.sub.4 -alkylamino, di-(C.sub.1 -C.sub.4 -alkyl)-amino, phenylamino, C.sub.1 -C.sub.4 -alkylcarbonyl-amino, C.sub.1 -C.sub.4 -alkoxy-carbonylamino, C.sub.1 -C.sub.4 -alkylsulphonylamino or optionally fluorine-, chlorine-, bromine- or methyl-substituted phenylsulphonylamino, furthermore R.sup.3 represents the radical ##STR8## in which R.sup.10 represents hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.11 and R.sup.12 are identical or different and each represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, C.sub.1 -C.sub.4 -alkyl (which is optionally substituted by fluorine and/or chlorine), C.sub.1 -C.sub.4 -alkoxy (which is optionally substituted by fluorine and/or chlorine), carboxyl, C.sub.1 -C.sub.4 -alkoxy-carbonyl, dimethylaminocarbonyl, C.sub.1 -C.sub.4 -alkyl-sulphonyl or di-(C.sub.1 -C.sub.4 -alkyl)-aminosulphonyl; furthermore R.sup.3 represents the radical ##STR9## in which R.sup.13 and R.sup.14 are identical or different and each represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, C.sub.1 -C.sub.4 -alkyl (which is optionally substituted by fluorine and/or chlorine) or C.sub.1 -C.sub.4 -alkoxy (which is optionally substituted by fluorine and/or chlorine); furthermore R.sup.3 represents the radical ##STR10## in which R.sup.15 and R.sup.16 are identical or different and each represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, C.sub.1 -C.sub.4 -alkyl (which is optionally substituted by fluorine and/or chlorine), C.sub.1 -C.sub.4 -alkoxy (which is optionally substituted by fluorine and/or chlorine), or C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -alkylsulphinyl or C.sub.1 -C.sub.4 -alkylsulphonyl (each of which are optionally substituted by fluorine and/or chlorine), or aminosulphonyl, mono-(C.sub.1 -C.sub.4 -alkyl)-aminosulphonyl, or di-(C.sub.1 -C.sub.4 -alkyl)-aminosulphonyl or C.sub.1 -C.sub.4 -alkoxy-carbonyl or dimethylaminocarbonyl; furthermore R.sup.3 represents the radical ##STR11## in which R.sup.17 and R.sup.18 are identical or different and each represent hydrogen, fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl (which is optionally substituted by fluorine and/or bromine), C.sub.1 -C.sub.4 -alkoxy (which is optionally substituted by fluorine and/or chlorine), or C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -alkylsulphinyl or C.sub.1 -C.sub.4 -alkylsulphonyl (each of which are optionally substituted by fluorine and/or chlorine), or di-(C.sub.1 -C.sub.4 -alkyl)-aminosulphonyl; furthermore R.sup.3 represents the radical ##STR12## in which R.sup.19 and R.sup.20 are identical or different and each represent hydrogen, fluorine, chlorine, bromine, cyano, nitro, C.sub.1 -C.sub.4 -alkyl (which is optionally substituted by fluorine and/or chlorine), C.sub.1 -C.sub.4 -alkoxy (which is optionally substituted by fluorine and/or chlorine), C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -alkylsulphinyl or C.sub.1 -C.sub.4 -alkylsulphonyl (which is optionally substituted by fluorine and/or chlorine), di-(C.sub.1 -C.sub.4 -alkyl)-aminosulphonyl, C.sub.1 -C.sub.4 -alkoxy-carbonyl or dimethylaminocarbonyl, and A represents oxygen, sulphur or the grouping N-Z.sup.1, where Z.sup.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl (which is optionally substituted by fluorine, chlorine, bromine or cyano), C.sub.3 -C.sub.6 -cycloalkyl, benzyl, phenyl (which is optionally substituted by fluorine, chlorine, bromine or nitro), C.sub.1 -C.sub.4 -alkylcarbonyl, C.sub.1 -C.sub.4 -alkoxy-carbonyl or di-(C.sub.1 -C.sub.4 -alkyl)aminocarbonyl; furthermore R.sup.3 represents the radical ##STR13## in which R.sup.21 and R.sup.22 are identical or different and each represent hydrogen, C.sub.1 -C.sub.4 -alkyl, halogen, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -halogenoalkoxy, Y.sup.1 represents sulphur or the grouping N--R.sup.23, where R.sup.23 represents hydrogen or C.sub.1 -C.sub.4 -alkyl; furthermore R.sup.3 represents the radical ##STR14## in which R.sup.24 represents hydrogen, C.sub.1 -C.sub.4 -alkyl, benzyl, pyridyl, quinolyl or phenyl, R.sup.25 represents hydrogen, halogen, cyano, nitro, C.sub.1 -C.sub.4 -alkyl (which is optionally substituted by fluorine and/or chlorine), C.sub.1 -C.sub.4 -alkoxy (which is optionally substituted by fluorine and/or chlorine), dioxolanyl or C.sub.1 -C.sub.4 -alkoxy-carbonyl, and R.sup.26 represents hydrogen, halogen or C.sub.1 -C.sub.4 -alkyl,

Additionally, the invention preferably provides the sodium, potassium, magnesium, calcium, ammonium, C.sub.1 -C.sub.4 -alkyl-ammonium, di-(C.sub.1 -C.sub.4 -alkyl)-ammonium, tri-(C.sub.1 -C.sub.4 -alkyl)-ammonium, tetra-(C.sub.1 -C.sub.4 -alkyl)-ammonium, tri-(C.sub.1 -C.sub.4 -alkyl)-sulphonium, C.sub.5 - or C.sub.6 -cycloalkyl-ammonium and di-(C.sub.1 -C.sub.2 -alkyl)-benzyl-ammonium salts of compounds of the formula (I) in which n, R.sup.1, R.sup.2 and R.sup.3 have the preferred meanings given above.

The invention in particular provides compounds of the formula (I) in which

R.sup.1 represents respectively optionally fluorine-, chlorine-, cyano-, methoxy- or ethoxy-substituted methyl, ethyl, n- or i-propyl, n-, i-, s- or t-butyl, or represents respectively optionally fluorine-, chlorine- or bromine-substituted propenyl, butenyl, propynyl or butynyl, or represents respectively optionally fluorine- and/or chlorine-substituted methoxy, ethoxy, n- or i-propoxy, n-, i-, s- or t-butoxy, propenyloxy or butenyloxy, or represents methylamino, ethylamino, n- or i-propylamino, n-, i-, s- or t-butylamino, dimethylamino or diethylamino, or represents respectively optionally fluorine-, chlorine-, bromine-, methyl- or ethyl-substituted cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl or cyclohexylmethyl, or represents respectively optionally fluorine-, chlorine-, bromine-, cyano-, methyl-, trifluoromethyl- or methoxy-substituted benzyl or phenyl, R.sup.2 represents fluorine- and/or chlorine-substituted methyl, ethyl, n- or i-propyl, n-, i-, s- or t-butyl, and R.sup.3 represents the radical ##STR15## in which R.sup.4 represents fluorine, chlorine, bromine, methyl, ethyl, n- or i-propyl, trifluoromethyl, methoxy, ethoxy, n- or i-propoxy, difluoromethoxy, trifluoromethoxy, 2-chloro-ethoxy, 2-methoxy-ethoxy, methylthio, ethylthio, n- or i-propylthio, methylsulphinyl, ethylsulphinyl, methylsulphonyl, ethylsulphonyl, dimethylaminosulphonyl, diethylaminosulphonyl, N-methoxy-N-methylaminosulphonyl, phenyl, phenoxy, methoxycarbonyl, ethoxycarbonyl, n- or i-propoxycarbonyl, and R.sup.5 represents hydrogen, methyl, ethyl, fluorine, chlorine or bromine; furthermore R.sup.3 represents the radical ##STR16## in which R.sup.10 represents hydrogen, R.sup.11 represents fluorine, chlorine, bromine, methyl, methoxy, difluoromethoxy, trifluoromethoxy, ethoxy, methoxycarbonyl, ethoxycarbonyl, methylsulphonyl or dimethylaminosulphonyl, and R.sup.12 represents hydrogen; furthermore R.sup.3 represents the radical ##STR17## in which R represents methyl, ethyl, n- or i-propyl, or R.sup.3 represents the radical ##STR18## in which R.sup.24 represents methyl, ethyl, n- or i-propyl, phenyl or pyridyl, R.sup.25 represents hydrogen, fluorine, chlorine or bromine, and R.sup.26 represents fluorine, chlorine, bromine, methoxycarbonyl or ethoxycarbonyl.

The abovementioned general or preferred radical definitions apply both to the end products of the formula (I) and, correspondingly, to the precursors or intermediates required in each case for the preparation. These radical definitions can be combined with one another as desired, thus including combination between the preferred ranges indicated.

In the definitions of the radicals, hydrocarbon radicals such as alkyl, alkenyl or alkynyl are straight-chain or branched, even in combination with hetero atoms, as in alkoxy, alkylthio or alkylamino, even if this is not explicitly stated.

Halogen generally represents fluorine, chlorine, bromine or iodine, preferably fluorine, chlorine or bromine, in particular fluorine or chlorine.

Using, for example, 2-trifluoromethoxy-phenylsulphonyl isocyanate and 4-ethyl-5-difluoromethoxy-2,4-dihydro-3H-1,2,4-triazol-3-one as starting materials, the course of the reaction in the process (a) according to the invention can be illustrated by the following equation: ##STR19##

Using, for example, 2-ethylthio-benzenesulphonamide and 2-chlorocarbonyl-4-benzyl-5-(2,2-difluoro-ethoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one as starting materials, the course of the reaction in the process (b) according to the invention can be illustrated by the following equation: ##STR20##

Using, for example, N-methoxycarbonyl-2-methoxy-benzenesulphonamide and 5-(2-chloro-ethoxy)-4-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one as starting materials, the course of the reaction of the process (c) according to the invention can be illustrated by the following equation: ##STR21##

Using, for example, 2-chloro-6-methyl-benzenesulphonyl chloride, 4-allyl-5-(2,3,3-trifluoro-propoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one and sodium cyanate as starting materials, the course of the reaction of the process (d) according to the invention can be illustrated by the following equation: ##STR22##

A general definition of the triazolinones to be used as starting materials in the processes (a), (c) and (d) according to the invention for preparing compounds of the formula (I) is given by the formula (II).

In the formula (II), R.sup.1 and R.sup.2 each preferably or in particular have that meaning which has already been indicated above, in connection with the description of the compounds of the formula (I) according to the invention, as being preferable or particularly preferable for R.sup.1 and R.sup.2.

The triazolinones of the general formula (II) have not been disclosed in the literature; as novel substances, they also form part of the subject matter of the present application.

The novel triazolinones of the formula (II) are obtained when carbazates of the general formula (IX) ##STR23## in which R represents alkyl (preferably methyl or ethyl)

are reacted with diesters of alkyliminocarbonic acid of the general formula (X) ##STR24## in which R.sup.1 and R.sup.2 are as defined above, if appropriate in the presence of a diluent such as methanol at temperatures between 0.degree. C. and 100.degree. C. and the thus-formed compounds of the general formula (XI) ##STR25## in which R, R.sup.1 and R.sup.2 are as defined above are cyclocondensed--if appropriate after intermediate isolation--if appropriate in the presence of a diluent such as toluene at temperatures between 20.degree. C. and 150.degree. C. (cf. the preparation examples).

The triazolinones of the formula (II) in which R.sup.2 represents difluoromethyl (R.sup.1 being as defined above) are preferably prepared by reacting urazoles of the general formula (XII) ##STR26## in which R.sup.1 is as defined above

with chlorodifluoromethane in the presence of an acid acceptor such as sodium hydroxide and in the presence of a diluent such as isopropanol and/or water, at temperatures between 0.degree. C. and 100.degree. C. (cf. the preparation examples).

A general definition of the sulphonyl isocyanates also to be used as starting materials in the process (a) according to the invention for preparing compounds of the formula (I) is given by the formula (III).

In the formula (III), R.sup.3 preferably or in particular has that meaning which has already been indicated above, in connection with the description of the compounds of the formula (I) according to the invention, as being preferable or particularly preferable for R.sup.3.

The starting materials of the formula (III) are known and/or can be prepared by methods known per se (cf. U.S. Pat. No. 4,127,405, U.S. Pat. No. 4,169,719, U.S. Pat. No. 4,371,391, EP-A 7687, EP-A 13480, EP-A 21641, EP-A 23141, EP-A 23422, EP-A 30139, EP-A 35893; EP-A 44808; EP-A 44809, EP-A 48143, EP-A 51466, EP-A 64322, EP-A 70041, EP-A 173312).

A general definition of the triazolinone derivatives to be used as starting materials in the process (b) according to the invention for preparing compounds of the general formula (I) is given by the formula (IV). In the formula (IV), R.sup.1 and R.sup.2 each preferably or in particular have that meaning which has already been indicated above, in connection with the description of the compounds of the formula (I), as being preferable or particularly preferable for R.sup.1 and R.sup.2 ; Z preferably represents fluorine, chlorine, bromine, methoxy, ethoxy, benzyloxy, phenoxy, halogeno- or nitro-phenoxy, and in particular represents methoxy, phenoxy or 4-nitro-phenoxy.

The starting materials of the formula (IV) have not been disclosed in the literature; as novel substances, they are also part of the subject matter of the present application.

The novel compounds of the formula (IV) are obtained when triazolinones of the general formula (II) ##STR27## in which R.sup.1 and R.sup.2 are each as defined above,

are reacted with carbonic acid derivatives of the general formula (XIII) Z-CO-Z.sup.1 (XIII) in which Z is as defined above and Z.sup.1 represents halogen, alkoxy, aralkoxy or aryloxy, if appropriate in the presence of an acid acceptor, such as, for example, potassium t-butoxide, and if appropriate in the presence of a diluent, such as, for example, tetrahydrofuran or dimethoxyethane, at temperatures between 0.degree. C. and 100.degree. C.

A general definition of the sulphonamides also to be used as starting materials in the process (b) according to the invention for preparing compounds of the general formula (I) is given by the formula (V). In the formula (V), R.sup.3 preferably or in particular has that meaning which has already been indicated above, in connection with the description of the compounds of the formula (I), as being preferable or particularly preferable for R.sup.3.

The starting materials of the formula (V) are known and/or can be prepared by methods known per se (cf. U.S. Pat. No. 4,127,405, U.S. Pat. No. 4,169,719, U.S. Pat. No. 4,371,391, EP-A 7687, EP-A 13480, EP-A 21641, EP-A 23141, EP-A 23422, EP-A 30139, EP-A 35893, EP-A 44808, EP-A 44809, EP-A 48143, EP-A 51466, EP-A 64322, EP-A 70041, EP-A 173312).

A general definition of the sulphonamide derivatives to be used as starting materials in the process (c) according to the invention for preparing compounds of the formula (I) is given by the formula (VI). In the formula (VI), R.sup.3 preferably or in particular has that meaning which has already been indicated above, in connection with the description of the compounds of the formula (I), as being preferable or particularly preferable for R.sup.3 ; Z preferably represents fluorine, chlorine, bromine, methoxy, ethoxy, benzyloxy or phenoxy, and in particular represents methoxy or phenoxy.

The starting materials of the formula (VI) are known and/or can be prepared by methods known per se.

A general definition of the sulphonyl halides to be used as starting materials in the process (d) according to the invention for preparing compounds of the formula (I) is given by the formula (VII). In the formula (VII), R.sup.3 preferably or in particular has that meaning which has already been indicated above, in connection with the description of the compounds of the formula (I), as being preferable or particularly preferable for R.sup.3 ; X preferably represents fluorine, chlorine or bromine, and in particular represents chlorine.

The starting materials of the formula (VII) are known and/or can be prepared by methods known per se.

The processes (a), (b), (c) and (d) according to the invention for the preparation of the novel compounds of the formula (I) are preferably carried out using diluents. Suitable diluents in this context are virtually all inert organic solvents. These include, preferably, aliphatic and aromatic, optionally halogenated hydrocarbons such as pentane, hexane, heptane, cyclohexane, petroleum ether, benzine, ligroin, benzene, toluene, xylene, methylene chloride, ethylene chloride, chloroform, tetrachloromethane, chlorobenzene and o-dichlorobenzene; ethers such as diethyl ether and dibutyl ether, glycol dimethyl ether and diglycol dimethyl ether, tetrahydrofuran and dioxane; ketones such as acetone, methyl ethyl ketone, methyl isopropyl ketone and methyl isobutyl ketone; esters such as methyl acetate and ethyl acetate; nitriles, for example acetonitrile and propionitrile; amides, for example dimethylformamide, dimethylacetamide and N-methylpyrrolidone, and also dimethyl sulphoxide, tetramethylene sulphone and hexamethylphosphoric triamide.

As reaction auxiliaries and/or as acid acceptors in the processes (a), (b), (c) and (d) according to the invention it is possible to employ all acid-binding agents which can customarily be used for such reactions. Preference is given to alkali metal hydroxides, for example sodium hydroxide and potassium hydroxide, alkaline earth metal hydroxides, for example calcium hydroxide, alkali metal carbonates and alkoxides, such as sodium carbonate and potassium carbonate, sodium tert-butoxide and potassium tert-butoxide, and also basic nitrogen compounds, such as trimethylamine, triethylamine, tripropylamine, tributylamine, diisobutylamine, dicyclohexylamine, ethyldiisopropylamine, ethyldicyclohexylamine, N,N-dimethylbenzylamine, N,N-dimethyl-aniline, pyridine, 2-methyl-, 3-methyl-, 4-methyl-, 2,4-dimethyl-, 2,6-dimethyl-, 2-ethyl-, 4-ethyl- and 5-ethyl-2-methyl-pyridine, 1,5-diazabicyclo[4,3,0]-non-5-ene (DBN), 1,8-diazabicyclo[5,4,0]-undec-7-ene (DBU) and 1,4-diazabicyclo-[2,2,2]-octane (DABCO).

The reaction temperatures in the processes (a), (b), (c) and (d) according to the invention can be varied within a relatively wide range. The reactions are in general carried out at temperatures of between -20.degree. C. and +100.degree. C., preferably at temperatures between 0.degree. C. and +80.degree. C.

The processes (a), (b), (c) and (d) according to the invention are generally carried out under atmospheric pressure. However, it is also possible to operate under elevated or reduced pressure.

For carrying out processes (a), (b), (c) and (d) according to the invention, the starting materials required in each case are in general employed in approximately equimolar quantities. However, it is also possible to use one of the components employed in each case in a relatively large excess. The reactions are in general carried out in a suitable diluent in the presence of an acid acceptor, and the reaction mixture is stirred for a number of hours at the particular temperature required. Work-up in the case of the processes (a), (b), (c) and (d) according to the invention is in each case carried out by customary methods (cf. the Preparation Examples).

Salts of the compounds of the general formula (I) according to the invention can be prepared if desired. Such salts are obtained in a simple manner by customary methods of forming salts, for example by dissolving or dispersing a compound of the formula (I) in an appropriate solvent, for example methylene chloride, acetone, tert-butyl methyl ether or toluene, and adding an appropriate base. The salts can then--if desired after prolonged stirring--be isolated by concentration or filtration with suction.

The active compounds according to the invention can be used as defoliants, desiccants, haulm killers and, especially, as weed-killers. By weeds, in the broadest sense, there are to be understood all plants which grow in locations where they are not wanted. Whether the substances according to the invention act as total or selective herbicides depends essentially on the amount used.

The active compounds according to the invention can be used, for example, in connection with the following plants:

Dicotyledonous weeds of the genera: Sinapis, Lepidium, Galium, Stellaria, Matricaria, Anthemis, Galinsoga, Chenopodium, Urtica, Senecio, Amaranthus, Portulaca, Xanthium, Convolvulus, Ipomoea, Polygonum, Sesbania, Ambrosia, Cirsium, Carduus, Sonchus, Solanum, Rorippa, Rotala, Lindernia, Lamium, Veronica, Abutilon, Emex, Datura, Viola, Galeopsis, Papaver, Centaurea, Trifolium, Ranunculus and Taraxacum.

Dicotyledonous crops of the genera: Gossypium, Glycine, Beta, Daucus, Phaseolus, Pisum, Solanum, Linum, Ipomoea, Vicia, Nicotiana, Lycopersicon, Arachis, Brassica, Lactuca, Cucumis and Cucurbita.

Monocotyledonous weeds of the genera: Echinochloa, Setaria, Panicum, Digitaria, Phleum, Poa, Festuca, Eleusine, Brachiaria, Lolium, Bromus, Avena, Cyperus, Sorghum, Agropyron, Cynodon, Monochoria, Fimbristylis, Sagittaria, Eleocharis, Scirpus, Paspalum, Ischaemum, Sphenoclea, Dactyloctenium, Agrostis, Alopecurus and Apera.

Monocotyledonous crops of the genera: Oryza, Zea, Triticum, Hordeum, Avena, Secale, Sorghum, Panicum, Saccharum, Ananas, Asparagus and Allium.

However, the use of the active compounds according to the invention is in no way restricted to these genera, but also extends in the same manner to other plants.

The compounds are suitable, depending on the concentration, for the total control of weeds, for example on industrial terrain and rail tracks, and on paths and squares with or without tree plantings. Equally, the compounds can be employed for controlling weeds in perennial crops, for example afforestations, decorative tree plantings, orchards, vineyards, citrus groves, nut orchards, banana plantations, coffee plantations, tea plantations, rubber plantations, oil palm plantations, cocoa plantations, soft fruit plantings and hopfields, in lawns, turf and pasture-land, and for the selective control of weeds in annual crops.

The compounds of the formula (I) according to the invention are preferably suitable for the selective control of monocotyledonous and dicotyledonous weeds in monocotyledonous and dicotyledonous crops, both pre-emergence and post-emergence.

Additionally, the active compounds according to the invention have a potent microbicidal action and can be practically employed for controlling undesirable microorganisms. The active compounds are suitable for use as crop protection agents, in particular as fungicides.

Fungicides in plant protection are employed for controlling Plasmodiophoromycetes, Oomycetes, Chytridiomycetes, Zygomycetes, Ascomycetes, Basidiomycetes and Deuteromycetes.

Bactericides in plant protection are employed for controlling Pseudomonadaceae, Rhizobiaceae, Enterobacteriaceae, Corynebacteriaceae and Streptomycetaceae.

Some causative organisms of fungal and bacterial diseases which come under the generic names listed above may be mentioned as examples, but not by way of limitation:

Xanthomonas species, such as Xanthomonas campestris pv. oryzae; Pseudomonas species, such as Pseudomonas syringae pv. lachrymans; Erwinia species, such as Erwinia amylovora; Pythium species, such as Pythium ultimum; Phytophthora species, such as Phytophthora infestans; Pseudoperonospora species, such as Pseudoperonospora humuli or Pseudoperonospora cubensis; Plasmopara species, such as Plasmopara viticola; Bremia species, such as Bremia lactucae; Peronospora species, such as Peronospora pisi or P. brassicae; Erysiphe species, such as Erysiphe graminis; Sphaerotheca species, such as Sphaerotheca fuliginea; Podosphaera species, such as Podosphaera leucotricha; Venturia species, such as Venturia inaequalis; Pyrenophora species, such as Pyrenophora teres or P. graminea (conidia form: Drechslera, syn: Helminthosporium); Cochliobolus species, such as Cochliobolus sativus (conidia form: Drechslera, syn: Helminthosporium); Uromyces species, such as Uromyces appendiculatus; Puccinia species, such as Puccinia recondita; Sclerotinia species, such as Sclerotinia sclerotiorum; Tilletia species, such as Tilletia caries; Ustilago species, such as Ustilago nuda or Ustilago avenae; Pellicularia species, such as Pellicularia sasakii; Pyricularia species, such as Pyricularia oryzae; Fusarium species, such as Fusarium culmorum; Botrytis species, such as Botrytis cinerea; Septoria species, such as Septoria nodorum; Leptosphaeria species, such as Leptosphaeria nodorum; Cercospora species, such as Cercospora canescens; Alternaria species, such as Alternaria brassicae; Pseudocercosporella species, such as Pseudocercosporella herpotrichoides.

The good toleration, by plants, of the active compounds, at the concentrations required for controlling plant diseases, permits treatment of aerial parts of plants, of vegetative propagation stock and seeds, and of the soil.

The compounds of the formula (I) are particularly suitable for the protective treatment of pomaceous fruit, such as apples, against the causative organism of powdery mildew in apple (Podosphaera leucotricha) and to a certain extent also for use in rice against Pyricularia oryzae.

The active compounds can be converted into the customary formulations, such as solutions, emulsions, wettable powders, suspensions, powders, dusting agents, pastes, soluble powders, granules, suspo-emulsion concentrates, natural and synthetic materials impregnated with active compound, and very fine capsules in polymeric substances.

These formulations are produced in a known manner, for example by mixing the active compounds with extenders, that is liquid solvents and/or solid carriers, optionally with the use of surface-active agents, that is emulsifying agents and/or dispersing agents and/or foam-forming agents.

In the case of the use of water as an extender, organic solvents can, for example, also be used as auxiliary solvents. Suitable liquid solvents are in the main: aromatics, such as xylene, toluene or alkylnaphthalenes, chlorinated aromatics and chlorinated aliphatic hydrocarbons, such as chlorobenzenes, chloroethylenes or methylene chloride, aliphatic hydrocarbons, such as cyclohexane or paraffins, for example petroleum fractions, mineral and vegetable oils, alcohols, such as butanol or glycol as well as their ethers and esters, ketones, such as acetone, methyl ethyl ketone, methyl isobutyl ketone or cyclohexanone, strongly polar solvents, such as dimethylformamide and dimethyl sulphoxide, as well as water.

Suitable solid carriers are: for example ammonium salts and ground natural minerals, such as kaolins, clays, talc, chalk, quartz, attapulgite, montmorillonite or diatomaceous earth, and ground synthetic minerals, such as finely divided silica, alumina and silicates, suitable solid carriers for granules are: for example crushed and fractionated natural rocks such as calcite, marble, pumice, sepiolite and dolomite, as well as synthetic granules of inorganic and organic meals, and granules of organic material such as sawdust, coconut shells, maize cobs and tobacco stalks; suitable emulsifying and/or foam-forming agents are: for example non-ionic and anionic emulsifiers, such as polyoxyethylene fatty acid esters, polyoxyethylene fatty alcohol ethers, for example alkylaryl polyglycol ethers, alkylsulphonates, alkyl sulphates, arylsulphonates as well as protein hydrolysates; suitable dispersing agents are: for example lignin-sulphite waste liquors and methylcellulose.

Adhesives such as carboxymethylcellulose and natural and synthetic polymers in the form of powders, granules or latices, such as gum arabic, polyvinyl alcohol and polyvinyl acetate, as well as natural phospholipids, such as cephalins and lecithins, and synthetic phospholipids, can be used in the formulations. Further additives can be mineral and vegetable oils.

It is possible to use colorants such as inorganic pigments, for example iron oxide, titanium oxide and Prussian Blue, and organic dyes, such as alizarin dyes, azo dyes and metal phthalocyanine dyes, and trace nutrients such as salts of iron, manganese, boron, copper, cobalt, molybdenum and zinc.

The formulations in general contain between 0.1 and 95 per cent by weight of active compound, preferably between 0.5 and 90%.

For controlling weeds, the active compounds according to the invention, as such or in the form of their formulations, can also be used as mixtures with known herbicides, ready-to-use formulations or tank mixes being possible.

Possible components for the mixtures are known herbicides, for example anilides, such as diflufenican and propanil; arylcarboxylic acids, such as dichloropicolinic acid, dicamba and picloram; aryloxyalkanoic acids, such as 2,4-D, 2,4-DB, 2,4-DP, fluroxypyr, MCPA, MCPP and triclopyr; aryloxyphenoxy-alkanoic esters, such as diclofop-methyl, fenoxaprop-ethyl, fluazifop-butyl, haloxyfop-methyl and quizalofop-ethyl; azinones, such as chloridazon and norflurazon; carbamates, such as chlorpropham, desmedipham, phenmedipham and propham; chloroacetanilides, such as alachlor, acetochlor, butachlor, metazachlor, metolachlor, pretilachlor and propachlor; dinitroanilines, such as oryzalin, pendimethalin and trifluralin; diphenyl ethers, such as acifluorfen, bifenox, fluoroglycofen, fomesafen, halosafen, lactofen and oxyfluorfen; ureas, such as chlorotoluron, diuron, fluometuron, isproturon, linuron and methabenzthiazuron; hydroxylamines, such as alloxydim, clethodim, cycloxydim, sethoxydim and tralkoxydim; imidazolinones, such as imazethapyr, imazamethabenz, imazapyr and imazaquin; nitriles, such as bromoxynil, dichlobenil and ioxynil; oxyacetamides, such as mefenacet; sulphonyl-ureas, such as amidosulfuron, bensulfuron-methyl, chlorimuron-ethyl, chlorsulfuron, cinosulfuron, metsulfuron-methyl, nicosulfuron, primisulfuron, pyrazosulfuron-ethyl, thifensulfuron-methyl, triasulfuron and tribenuron-methyl; thiocarbamates, such as butylate, cycloate, diallate, EPTC, esprocarb, molinate, prosulfocarb, thiobencarb and triallate; triazines, such as atrazine, cyanazine, simazine, simetryne, terbutryne and terbutylazine; triazinones, such as hexazinone, metamitron and metribuzin; others, such as aminotriazole, benfuresate, bentazone, cinmethylin, clomazone, clopyralid, defenzoquat, dithiopyr, ethofumesate, fluorochloridone, glufosinate, glyphosate, isoxaben, pyridate, quinchlorac, quinmerac, sulphosate and tridiphane.

Mixtures with other known active compounds, such as fungicides, insecticides, acaricides, nematicides, bird repellents, plant nutrients and agents which improve soil structure, are also possible.

The active compounds can be used as such, in the form of their formulations or in the use forms prepared therefrom by further dilution, such as ready-to-use solutions, suspensions, emulsions, powders, pastes and granules. They are used in the customary manner, for example by watering, spraying, atomizing or scattering.

The active compounds according to the invention can be applied either before or after emergence of the plants. They can also be incorporated into the soil before sowing.

The amount of active compound used can vary within a substantial range. It depends essentially on the nature of the desired effect. In general, the amounts used are between 1 g and 10 kg of active compound per hectare of soil surface, preferably between 5 g and 2 kg per ha.

The preparation and use of the active compounds according to the invention can be seen from the examples below.

PREPARATION EXAMPLES

Example 1 ##STR28## (Process (a))

A solution of 1.9 g (9.5 mmol) of 4-methyl-5-(2,2,2-trifluoro-ethoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one in 50 ml of acetonitrile is mixed with 2.4 g (10 mmol) of 2-methoxycarbonyl-phenylsulphonyl isocyanate, and the mixture is stirred at 20.degree. C. for 12 hours. The mixture is then concentrated under reduced pressure and the residue is crystallized from diethyl ether.

3.7 g (89% of theory) of 2-(2-methoxycarbonyl-phenylsulphonylaminocarbonyl)-4-methyl-5-(2,2,2-trifluoro-ethoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 153.degree. C. are obtained.

Example 2 ##STR29## (Process (b))

3.8 g (12 mmol) of 4-methyl-2-phenoxycarbonyl-5-(2,2,2-trifluoroethoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one are dissolved in 20 ml of acetonitrile and admixed with 3.4 g (12 mmol) of 2-(N-methoxy-N-methyl-aminosulphonyl)-benzenesulphonamide and 1.9 g (12.5 mmol) of diazabicycloundecene (DBU). After the mixture has been stirred at 20.degree. C. for 1 hour, it is poured into a mixture of methylene chloride/5% strength hydrochloric acid, and the organic phase is separated off, dried with sodium sulphate and concentrated under reduced pressure. The residue is crystallized using diethyl ether.

3.3 g (55% of theory) of 2-[2-(N-methoxy-N-methyl-aminosulphonyl)-phenylsulphonyl-aminocarbonyl]-4-methyl-5-(2,2,2-trifluoroethoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 183.degree. C. are obtained.

By the methods of Examples 1 and 2 and in accordance with the general description of the preparation processes according to the invention, it is also possible to prepare, for example, the compounds of the formula (I) listed in Table 1 below. ##STR30##

TABLE 1__________________________________________________________________________Examples of compounds of the formula (I)Ex. MeltingNo. R.sup.1 R.sup.2 R.sup.3 point (.degree. C.)__________________________________________________________________________3 CH.sub.3 CH.sub.2 CF.sub.3 1684 CH.sub.3 CH.sub.2 CF.sub.3 ##STR31## 1895 CH.sub.3 CH.sub.2 CF.sub.3 ##STR32## 1356 CH.sub.3 CH.sub.2 CF.sub.3 ##STR33## 1597 CH.sub.3 CH.sub.2 CF.sub.3 ##STR34## 1788 CH.sub.3 CH.sub.2 CF.sub.3 ##STR35## 1449 CH.sub.3 CH.sub.2 CF.sub.3 ##STR36## 11910 CH.sub.3 CH.sub.2 CF.sub.3 ##STR37## 12011 CH.sub.3 CH.sub.2 CF.sub.3 ##STR38## 20312 CH.sub.3 CH.sub.2 CF.sub.3 ##STR39## 19313 CH.sub.3 CH.sub.2 CF.sub.3 ##STR40## 14414 CH.sub.3 CH.sub.2 CF.sub.3 ##STR41## 18015 CH.sub.3 CH.sub.2 CF.sub.3 ##STR42## 16216 CH.sub.3 CH.sub.2 CF.sub.3 ##STR43## 21617 CH.sub.3 CH.sub.2 CF.sub.3 ##STR44## 10218 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR45## 12919 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR46## 12220 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR47## 15321 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR48## 14022 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR49## 14623 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR50## 14824 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR51## 14525 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR52## 14226 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR53## 15527 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR54## 13628 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR55## 15829 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR56## 15330 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR57## 15031 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR58## 16032 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR59## 19633 CH.sub.3 CH.sub.2 CCl.sub.3 ##STR60## 18234 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR61## 12035 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR62## 11636 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR63## 16337 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR64## 15438 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR65## 12639 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR66## 10940 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR67## 16041 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR68## 15342 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR69## 16343 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR70## 15044 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR71## 15945 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR72## 16846 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR73## 16347 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR74## 11748 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR75## 14249 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 ##STR76## 15450 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR77## 9651 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR78## 11752 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR79## 10853 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR80## 13354 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR81## 15255 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR82## 11756 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR83## 14857 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR84## 10858 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR85## 11959 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR86## 8960 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR87## 14061 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR88## 12762 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR89## 12063 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR90## 14364 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR91## 14165 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 ##STR92## 15266 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR93## 12567 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR94## 8668 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR95## 10869 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR96## 9370 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR97## 16271 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR98## 10372 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR99## 14473 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR100## 11074 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR101## 11575 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR102## 12676 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR103## 11877 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR104## 10478 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR105## 12879 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR106## 11980 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR107## 12381 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR108## .sup.1 H--NMR (CDCl.sub.3, .delta.): 2.52(s, SCH.sub.3), 6.13 (q, CH.sub.2 -- CF.sub.3) ppm82 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 ##STR109##83 ##STR110## CH.sub.2 --CF.sub.3 ##STR111## 10884 ##STR112## CH.sub.2 --CF.sub.3 ##STR113## 13285 ##STR114## CH.sub.2 --CF.sub.3 ##STR115## 12486 ##STR116## CH.sub.2 --CF.sub.3 ##STR117## 12087 ##STR118## CH.sub.2 --CF.sub.3 ##STR119## .sup.1 H--NMR (CDCl.sub.3, .delta.): 4.74 (q, CH.sub.2 CF.sub.3), 6.66(t, OCHF.sub.2), ppm88 ##STR120## CH.sub.2 --CF.sub.3 ##STR121## 15489 ##STR122## CH.sub.2 --CF.sub.3 ##STR123## 15890 ##STR124## CH.sub.2 --CF.sub.3 ##STR125## 14191 ##STR126## CH.sub.2 --CF.sub.3 ##STR127## 12192 ##STR128## CH.sub.2 --CF.sub.3 ##STR129## 11993 ##STR130## CH.sub.2 --CF.sub.3 ##STR131## 11694 ##STR132## CH.sub.2 --CF.sub.3 ##STR133## 11495 ##STR134## CH.sub.2 --CF.sub.3 ##STR135## 14396 ##STR136## CH.sub.2 --CF.sub.3 ##STR137## 17497 ##STR138## CH.sub.2 --CF.sub.3 ##STR139## 15498 ##STR140## CH.sub.2 --CF.sub.3 ##STR141## 11799 ##STR142## CH.sub.2 --CF.sub.3 ##STR143## 175100 CH.sub.3 CHF.sub.2 ##STR144## 178101 CH.sub.3 CHF.sub.2 ##STR145## 189102 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR146## 142103 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR147## 55104 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR148## 127105 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR149## 128106 ##STR150## CH.sub.2 --CF.sub.3 ##STR151## 118107 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR152## 121108 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR153## 118109 ##STR154## CH.sub.2 --CF.sub.3 ##STR155## 79110 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR156## 94111 ##STR157## CH.sub.2 --CF.sub.3 ##STR158## 105112 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR159## 182113 ##STR160## CH.sub.2 --CF.sub.3 ##STR161## 154114 ##STR162## CH.sub.2 CF.sub.3 ##STR163## 154115 CH.sub.3 CH.sub.2 --CF.sub.3 ##STR164## 167__________________________________________________________________________ Starting materials of the formula (II):

Example (II-1) ##STR165## Step 1: Dibutyltin bis-2,2,3,3-tetrafluoropropoxide

723 g (2.45 mol) of dibutyltin dimethoxide with 777 g (5.89 mol) of 2,2,3,3-tetrafluoro-propanol are heated to 120.degree. C. under nitrogen. Most of the methanol liberated in this process is distilled off over a column. The remaining methanol and excess 2,2,3,3-tetrafluoro-propanol are then substantially removed under water pump vacuum (about 15 mbar), the dibutyltin bis-2,2,3,3-tetrafluoropropoxide remaining as residue.

Step 2: Bis-(2,2,3,3-tetrafluoropropyl) methyliminocarbonate

At 40.degree. C., 175 g (2.39 mol) of methyl isothiocyanate are added dropwise to dibutyltin bis-2,2,3,3-tetrafluoropropoxide obtained as described above, and the mixture is then heated under nitrogen to 120.degree. C. for 36 hours. The mixture is then subjected to a crude distillation, first under water pump vacuum and then under oil pump vacuum (final temperature in the bottom: 170.degree. C. at 1 mbar). Rectification under oil pump vacuum affords 555 g (77% of theory) of bis-(2,2,3,3-tetrafluoropropyl) methyliminocarbonate.

Boiling point: 73.degree. C. (15 mbar), purity: 98.3%

Step 3: 4-Methyl-5-(2,2,3,3-tetrafluoro-propoxy)-2,4-dihydro-3H-1,2,4-triazol-3-on

555 g (1.83 mol) of bis-(2,2,3,3-tetrafluoropropyl) methyliminocarbonate are dissolved in 500 ml of tetrahydrofuran and, with ice cooling (0.degree. C. to 5.degree. C.), admixed with 18.7 g (183 mmol) of pivalic acid (catalyst) and 278 g (1.83 mol) of phenyl carbazate. The mixture is stirred for 2 hours at 20.degree. C. and then warmed to 50.degree. C., resulting in a crystal pulp that can be stirred only with difficulty. When this is heated to 80.degree. C., the solution becomes homogeneous again. First, at about 200 mbar, most of the tetrahydrofuran and then, at about 15 mbar, most of the 2,2,3,3-tetrafluoro-propanol and phenol are distilled off. The residue is then freed of the remaining volatile components at a head temperature of 130.degree. C. and a pressure of about 0.5 mbar and then taken up in 400 ml of hot toluene. After cooling to 0.degree. C., the crystalline product is isolated by filtration under suction.

280 g (67% of theory) of 4-methyl-5-(2,2,3,3-tetrafluoro-propoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 101.degree. C. are obtained.

Example (II-2) ##STR166##

11.85 g (0.10 mol) of 4-methylurazole are dissolved in a mixture of 100 ml of isopropanol, 25 ml of water and 12 g of 45% strength aqueous sodium hydroxide solution (0.30 mol of NaOH). At 40.degree. C., difluorochloromethane (Frigen 22) is slowly passed through with stirring. After 27.7 g (0.41 mol) have been passed through, the reaction is interrupted and the reaction mixture is cooled. The isopropanol phase is separated off and concentrated under reduced pressure. The residue is stirred with diethyl ether and insoluble components are filtered off. The ether phase is concentrated under reduced pressure and the residue that remains is purified by preparative layer chromatography (eluent methylene chloride/methanol=20/3).

0.9 g (5.5% of theory) of 5-difluoromethoxy-4-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 111.degree. C. is obtained.

By the methods of Examples (II-1) and (II-2), it is also possible to prepare, for example, the compounds of the formula (II) listed in Table 2 below. ##STR167##

TABLE 2______________________________________Examples of compounds of the formula (II)Ex. MeltingNo. R.sup.1 R.sup.2 point (.degree. C.)______________________________________II-1 CH.sub.3 CH.sub.2 CF.sub.3 128II-4 CH.sub.3 CH.sub.2 CCl.sub.3 139II-5 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 101II-6 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 95II-7 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 62II-8 CH.sub.2 --CF.sub.3 113II-9 ##STR168## CH.sub.2 --CF.sub.3II-10 ##STR169## CHF.sub.2II-11 C.sub.2 H.sub.5 CHF.sub.2II-12 CH.sub.2 --CH.dbd.CH.sub.2 CHF.sub.2II-13 ##STR170## CHF.sub.2II-14 CH.sub.3 CH(CF.sub.3).sub.2II-15 C.sub.2 H.sub.5 CH(CF.sub.3).sub.2II-16 CH.sub.2 --CH.dbd.CH.sub.2 CH(CF.sub.3).sub.2II-17 ##STR171## CH(CF.sub.3).sub.2II-18 ##STR172## CH(CF.sub.3).sub.2II-19 CH.sub.3 CH.sub.2 --CH.sub.2 --FII-20 C.sub.2 H.sub.5 CH.sub.2 --CH.sub.2 --FII-21 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CH.sub.2 --FII-22 ##STR173## CH.sub.2 --CH.sub.2 --FII-23 ##STR174## CH.sub.2 --CH.sub.2 --FII-24 NH.sub.2 CH.sub.2 --CH.sub.2 --FII-25 NH--CH.sub.3 CH.sub.2 --CH.sub.2 --FII-26 N(CH.sub.3).sub.2 CH.sub.2 --CH.sub.2 --FII-27 NH.sub.2 CH.sub.2 --CF.sub.3II-28 NH--CH.sub.3 CH.sub.2 --CF.sub.3II-29 N(CH.sub.3).sub.2 CH.sub.2 --CF.sub.3II-30 NH.sub.2 CHF.sub.2II-31 NH--CH.sub.3 CHF.sub.2II-32 N(CH.sub.3).sub.2 CHF.sub.2II-33 CH.sub.3 CH.sub.2 --CHF.sub.2II-34 C.sub.2 H.sub.5 CH.sub.2 --CHF.sub.2II-35 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CHF.sub.2II-36 ##STR175## CH.sub.2 --CHF.sub.2II-37 ##STR176## CH.sub.2 --CHF.sub.2______________________________________ Starting materials of the formula (IV):

Example (IV-1) ##STR177##

At 20.degree. C., 51.7 g (0.33 mol) of phenyl chloroformate are added dropwise with efficient stirring to a mixture of 59.1 g (0.30 mol) of 4-methyl-5-(2,2,2-trifluoro-ethoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one, 100 ml of water, 400 ml of methylene chloride, 13.2 g (0.33 mol) of sodium hydroxide and 1.0 g of tetrabutylammonium bromide. After the addition, stirring is continued for a further 16 hours and the organic phase is then separated off, washed with water, dried and concentrated. The residue is crystallized from diisopropyl ether.

87.6 g (92% of theory) of 4-methyl-2-phenoxycarbonyl-5-(2,2,2-trifluoro-ethoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 105.degree. C. are obtained.

By the method of Example (IV-1) it is also possible to prepare, for example, the compounds of the formula (IV) listed in Table 3 below.

TABLE 3______________________________________Examples of compounds of the formula (IV)Ex. MeltingNo. R.sup.1 R.sup.2 Z point (.degree. C.)______________________________________IV-2 ##STR178## CH.sub.2 --CF.sub.3 O--C.sub.6 H.sub.5 91IV-3 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.3 O--C.sub.6 H.sub.5IV-4 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.3 O--C.sub.6 H.sub.5IV-5 CH.sub.3 CH.sub.2 CCl.sub.3 O--C.sub.6 H.sub.5IV-6 C.sub.2 H.sub.5 CH.sub.2 CCl.sub.3 O--C.sub.6 H.sub.5IV-7 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 CCl.sub.3 O--C.sub.6 H.sub.5IV-8 ##STR179## CH.sub.2 CCl.sub.3 O--C.sub.6 H.sub.5IV-9 ##STR180## CH.sub.2 CCl.sub.3 O--C.sub.6 H.sub.5IV-10 ##STR181## CH.sub.2 --CF.sub.3 O--C.sub.6 H.sub.5IV-11 NH.sub.2 CH.sub.2 --CF.sub.3 O--C.sub.6 H.sub.5IV-12 NH--CH.sub.3 CH.sub.2 --CF.sub.3 O--C.sub.6 H.sub.5IV-13 N(CH.sub.3).sub.2 CH.sub.2 --CF.sub.3 O--C.sub.6 H.sub.5IV-14 CH.sub.3 CH.sub.2 --CF.sub.2 --CHF.sub.2 O--C.sub.6 H.sub.5IV-15 C.sub.2 H.sub.5 CH.sub.2 --CF.sub.2 --CHF.sub.2 O--C.sub.6 H.sub.5IV-16 CH.sub.2 --CH.dbd.CH.sub.2 CH.sub.2 --CF.sub.2 --CHF.sub.2 O--C.sub.6 H.sub.5IV-17 ##STR182## CH.sub.2 --CF.sub.2 --CHF.sub.2 O--C.sub.6 H.sub.5IV-18 ##STR183## CH.sub.2 --CF.sub.2 --CHF.sub.2 O--C.sub.6 H.sub.5IV-19 N(CH.sub.3).sub.2 CH.sub.2 --CF.sub.2 --CHF.sub.2 O--C.sub.6 H.sub.5______________________________________

USE EXAMPLES

Example A

Pre-emergence test

Solvent: 5 parts by weight of acetone Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weight of active compound is mixed with the stated amount of solvent, the stated amount of emulsifier is added and the concentrate is diluted with water to the desired concentration.

Seeds of the test plants are sown in normal soil. After 24 hours, the soil is watered with the preparation of the active compound. It is advantageous to keep constant the amount of water per unit area. The concentration of the active compound in the preparation is of no importance, only the amount of active compound applied per unit area being decisive. After three weeks, the degree of damage to the plants is rated in % damage in comparison to the development of the untreated control. The figures denote:

0%=no action (like untreated control) 100%=total destruction

In this test, the compounds according to Preparation Examples 1, 2, 3, 4, 5, 6, 9, 11, 12, 15, 16, 17, 25, 50, 54, 66, 83, 84, 85, 86, 87, 88, 89, 91, 93, 94, 95, 96, 97, 98, 99, 100 and 101, for example, exhibit a strong action against weeds.

TABLE A__________________________________________________________________________Pre-emergence test/greenhouseCompound ofPreparation Applica-Example tion rate Bro- Lo- Ama- Galin- Matri- Sina- Sola-No. (g/ha) mus lium Poa ranthus soga caria pis num__________________________________________________________________________83 125 95 95 95 90 95 90 90 9584 125 90 90 90 90 95 90 90 9585 125 90 95 90 90 95 95 90 9586 125 95 80 90 90 95 95 95 95 1 125 95 95 95 90 90 90 80 95 3 125 95 90 80 80 70 95 80 90 4 125 95 95 95 95 95 90 95 95 5 125 95 -- 80 95 95 95 95 95 6 125 95 50 95 95 70 60 90 9550 125 95 90 90 90 80 90 90 9054 125 95 90 90 90 95 90 70 9087 125 90 90 90 90 70 50 80 9088 125 90 90 90 80 95 95 80 9089 125 90 80 80 90 95 95 80 9091 125 90 70 80 80 80 70 80 90 9 125 95 95 95 95 95 100 80 9511 125 -- 60 50 90 100 100 80 7012 125 80 80 80 95 100 80 80 8015 125 95 -- 60 95 70 95 90 9016 125 80 90 95 95 60 80 90 9093 125 95 95 95 95 95 95 95 9594 125 90 90 90 80 95 90 80 9095 125 80 90 -- 90 95 90 90 9096 125 95 95 90 90 90 90 90 8097 250 95 95 90 95 95 95 90 95 2 250 95 95 95 95 95 80 80 9517 125 95 70 80 90 90 90 80 9098 125 90 70 80 90 90 80 80 9025 125 -- -- 90 60 100 95 90 7066 125 90 95 90 70 95 95 70 9599 125 90 90 95 100 70 50 90 90100 125 -- 95 95 50 -- 70 80 95101 125 70 95 90 90 80 50 80 90__________________________________________________________________________

Example B

Post-emergence test

Solvent: 5 parts by weight of acetone Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weight of active compound is mixed with the stated amount of solvent, the stated amount of emulsifier is added and the concentrate is diluted with water to the desired concentration.

Test plants which have a height of 5-15 cm are sprayed with the preparation of the active compound in such a way as to apply the particular amounts of active compounds desired per unit area. The concentration of the spray liquor is chosen so that the particular amounts of active compounds desired are employed in 2000 l of water/ha. After three weeks, the degree of damage to the plants is rated in % damage in comparison to the development of the untreated control.

The figures denote:

0%=no action (like untreated control) 100%=total destruction

In this test, the compounds of Preparation Examples 1, 2, 4, 5, 9, 16, 17, 25, 50, 66, 83, 84, 85, 86, 87, 88, 89, 93, 94, 95, 96, 98, 99 and 100 show a strong action against weeds.

TABLE B__________________________________________________________________________Post-emergence test/greenhouseCompoundof Applic-Preparation ationExample rate Alope- Lo- Ama- Heli- Sola- Vero-No. (g/ha) curus Avena lium ranthus Datura Galium anthus num nica__________________________________________________________________________83 250 90 90 95 90 90 90 90 90 9084 250 -- 95 70 70 90 80 90 90 9585 250 -- -- 95 70 90 90 90 80 9586 500 -- 80 90 100 90 90 100 95 100 1 250 90 90 100 80 80 70 90 90 95 4 250 90 70 90 80 90 70 90 90 90 5 250 80 50 -- 95 90 70 95 90 10087 125 70 80 50 80 95 70 80 90 9050 60 80 50 80 95 50 85 -- 90 7088 250 80 -- 70 95 95 90 100 90 9089 125 50 -- 80 95 95 90 95 95 95 9 60 100 95 80 95 90 90 80 95 9016 125 -- 50 70 95 80 50 100 95 7093 125 95 90 80 95 95 90 100 95 7094 125 80 90 80 70 90 70 80 90 --95 60 70 70 -- 90 -- 95 70 70 8017 125 50 -- -- 90 80 50 100 95 9098 125 -- -- -- 95 50 -- 100 80 9096 60 95 70 90 95 70 90 80 -- 50 2 125 60 60 50 80 80 -- 95 80 8025 60 60 50 -- 80 80 50 100 90 --66 60 50 -- -- 80 80 50 100 90 --99 60 60 50 50 90 95 95 60 90 70100 125 -- 90 80 90 90 90 -- 95 90__________________________________________________________________________

Example C

Podosphaera test (apple)/protective

Solvent: 4.7 parts by weight of acetone Emulsifier: 0.3 part by weight of alkyl-aryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weight of active compound is mixed with the stated quantities of solvent and emulsifier, and the concentrate is diluted with water to the desired concentration.

To test for protective activity, young plants are sprayed with the preparation of active compound. After the spray coating has dried on, the plants are inoculated by dusting with conidiae of the causative organism of apple mildew (Podosphaera leucotricha).

The plants are then placed in a greenhouse at 23.degree. C. and a relative atmospheric humidity of about 70%.

Evaluation is carried out 10 days after the inoculation.

In this test, the compounds of Preparation Examples 1, 3, 83 and 85, for example, have an efficacy of 87 to 100% at an active compound concentration of 25 ppm.

TABLE C______________________________________Podosphaera test (apple)/protective Efficacy in % of the untreatedActive compound (compound of control at an active compoundPreparation Example No.) concentration of 25 ppm______________________________________ 1 89 3 8783 10085 99______________________________________

Example D

Sphaerotheca test (cucumber)/protective

Solvent: 4.7 parts by weight of acetone Emulsifier: 0.3 part by weight of alkyl-aryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weight of active compound is mixed with the stated quantities of solvent and emulsifier, and the concentrate is diluted with water to the desired concentration.

To test for protective activity, young plants are sprayed with the preparation of active compound. After the spray coating has dried on, the plants are dusted with conidiae of the fungus Sphaerotheca fuliginea.

The plants are then placed in a greenhouse at 23 to 24.degree. C. and at a relative atmospheric humidity of about 75%.

Evaluation is carried out 10 days after the inoculation.

In this test, the compound of Preparation Example 50, for example, has an efficacy of 92% at an active compound concentration of 100 ppm.

TABLE D______________________________________Sphaerotheca test (cucumber)/protective Efficacy in % of the untreated control at an active compoundActive compound (compound of concentrationPreparation Example No.) of 100 ppm______________________________________50 92______________________________________

Claims

1. A compound of the formula (I) ##STR184## wherein R.sup.1 represents methyl or cyclopropyl,

R.sup.2 represents --CH.sub.2 --CF.sub.3,

R.sup.3 represents the grouping ##STR185## in which R.sup.4 and R.sup.5 are identical or different and each represent chlorine, bromine, C.sub.1 -C.sub.6 -alkyl (which is optionally substituted by fluorine, chlorine, bromine, or C.sub.1 -C.sub.4 -alkoxy (which is optionally substituted by fluorine, chlorine, bromine), or C.sub.1 -C.sub.4 -alkylthio, or C.sub.2 -C.sub.6 -alkenyloxy, or C.sub.3 -C.sub.6 -alkynyloxy, or the radical --S(O).sub.p --R.sup.6, where

p represents the number 2, and

R.sup.6 represents C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkylamino,

R.sup.4 and/or R.sup.5 further represent the radical CO--R.sup.8, where

R.sup.8 represents C.sub.1 -C.sub.6 -alkoxy,

R.sup.4 and/or R.sup.5 further represent C.sub.1 -C.sub.4 -alkyl-sulphonyloxy,

or their sodium, potassium, magnesium, calcium, ammonium, C.sub.1 -C.sub.4 -alkyl-ammonium, di-(C.sub.1 -C.sub.4 -alkyl)-ammonium, tri-(C.sub.1 -C.sub.4 -alkyl)-ammonium, tetra-(C.sub.1 -C.sub.4 -alkyl)-ammonium, tri-(C.sub.1 -C.sub.4 -alkyl)-sulphonium, C.sub.5 - or C.sub.6 -cycloalkyl-ammonium and di-(C.sub.1 -C.sub.2 -alkyl)-benzyl-ammonium salt with the proviso that the compound of the following structure is excluded ##STR186##

2. A compound of the formula (I) or salt thereof according to claim 1 wherein R.sup.1 represents methyl or cyclopropyl,

R.sup.2 represents CH.sub.2 --CF.sub.3,

R.sup.3 represents the radical ##STR187## in which R.sup.4 represents chlorine, bromine, methyl, ethyl, n- or i-propyl, trifluoromethyl, methoxy, ethoxy, n- or i-propoxy, difluoromethoxy, trifluoromethoxy, 2-chloro-ethoxy, methylthio, ethylthio, n- or i-propylthio, methylsulphonyl, ethylsulphonyl, N-methoxy-N-methylaminosulphonyl, methoxycarbonyl, ethoxycarbonyl, n- or i-propoxycarbonyl, and

R.sup.5 represents methyl, ethyl, fluorine,

with the proviso that the compound of the following structure is excluded ##STR188##

3. A compound, 2-(2-ethoxycarbonyl-phenylsulphonylaminocarbonyl)-4-methyl-5-(2,2,2-trifluoro-ethoxy)-2,4-dihydro-3H-1,2,4-triazol-3-one having the structural formula:

4. An herbicidal composition comprising an herbicidally effective amount of a compound according to claim 1 and a carrier.

5. A method of controlling unwanted vegetation which comprises applying to such vegetation or to a locus from which it is desired to exclude such vegetation an herbicidally effective amount of a compound according to claim 1.