There is disclosed substituted thiocarboxamides of the general formula (I) ##STR00001##
useful as herbicides.

Patent
   RE39263
Priority
May 04 1994
Filed
Dec 12 2003
Issued
Sep 05 2006
Expiry
Apr 21 2015
Assg.orig
Entity
Large
0
27
EXPIRED
2. A substituted aromatic thiocarboxamide of the formula (I) ##STR00199##
wherein
R1 represents hydrogen, fluorine, chlorine or bromine,
R2 represents the following group

—A1—A2—A3
in which
A1 represents a single bond, or represents oxygen, sulphur, —SO—, —SO2—, —CO— or the group —N(A4)—, in which A4 represents hydrogen, hydroxyl, C1-C4-alkyl, C3-C4-alkenyl, C3-C4-alkinyl, C1-C4-alkoxy, phenyl, C1-C4-alkylsulphonyl or phenylsulphonyl,
A1 additionally represents in each case optionally fluorine- or chlorine-substituted C1-C6-alkendiyl, C2-C6-alkenediyl, C2-C6-alkinediyl, C3-C6-cycloalkanediyl, C3-C6-cycloalkenediyl or phenylene,
A2 represents a single bond, or represents oxygen, sulphur, —SO—, —SO2—, —CO— or the group —N(A4)—, in which A4 represents hydrogen, hydroxyl, C1-C4-alkyl, C3-C4-alkenyl, C3-C4-alkinyl, C1-C4-alkoxy, phenyl, C1-C4-alkylsulphonyl or phenylsulphonyl,
A2 additionally represents in each case optionally fluorine- or chlorine-substituted C1-C6-alkanediyl, C2-C6-alkenediyl, C2-C6-alkinediyl, C3-C6-cycloalkanediyl, C3-C6-cycloalkenediyl or phenylene,
A3 represents hydrogen, hydroxyl, amino, cyano, isocyano, thiocyanato, nitro, carboxyl, carbamoyl, thiocarbamoyl, sulpho, chlorosulphonyl, halogen, or represents in each case optionally halogen- or C1-C4-alkoxy-substituted alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkylamino, dialkylamino, alkoxycarbonyl or dialkoxy(thio)phosphoryl having in each case 1 to 6 carbon atoms in the alkyl groups, or represents in each case optionally halogen-substituted alkenyl, alkenyloxy, alkenylamino, alkylideneamino, alkenyloxycarbonyl, alkinyl, alkinyloxy, alkinylamino or alkinyloxycarbonyl having in each case 2 to 6 carbon atoms in the alkenyl, alkylidene or alkinyl groups, or represents in each case optionally halogen-, cyano-, carboxyl-, C1-C4-alkyl- and/or C1-C4-alkoxy-carbonyl-substituted cycloalkyl, cycloalkyloxy, cycloalkylalkyl, cycloalkylalkoxy, cycloalkylideneamino, cycloalkyloxycarbonyl or cycloalkylalkoxycarbonyl having in each case 3 to 6 carbon atoms in the cycloalkyl groups and optionally 1 to 4 carbon atoms in the alkyl groups, or represents in each case optionally nitro-, cyano-, carboxyl-, halogen, C1-C4-alkyl-, C1-C4-halogenoalkyl-, C1-C4-alkyloxy-, C1-C4-halogenoalkyloxy- and/or C1-C4-alkoxy-carbonyl-substituted phenyl, phenyloxy, phenyl-C1-C4-alkyl, phenyl-C1-C4-alkoxy, phenyloxycarbonyl or phenyl-C1-C4-alkoxycarbonyl, (in each case optionally totally or partially hydrogenated) pyrrolyl, pyrazolyl, imidazolyl, triazolyl, furyl, thienyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, pyridinyl, pyrimidinyl, triazinyl, pyrazolyl-C1-C4-alkyl, furyl-C1-C4-alkyl, thienyl-C1-C4-alkyl, oxazolyl-C1-C4-alkyl, isoxazole-C1-C4-alkyl, thiazole-C1-C4-alkyl, pyridinyl-C1-C4-alkyl, pyrimidinyl-C1-C4-alkyl, pyrazolylmethoxy or furylmethoxy, or represents perhydropyranylmethoxy or pyridylmethoxy,
R3 represents hydrogen, fluorine, chlorine or bromine or together with R2 represents an alkanediyl or alkenediyl group having in each case up to 4 carbon atoms which optionally contains at the beginning (or end) or within the hydrocarbon chain an oxygen atom, a sulphur atom, an SO2 group, an nh group, an N—C1-C4-alkyl group, a carbonyl group and/or thiocarbonyl group, and
Z represents Z3: ##STR00200##
wherein
Q1 represents a group from the series —CO—, —CS—, —CH2—, —CH(OH)—, —CHCl—, —CHBr—, —C(═CH2)—, —C(═CHF)—, —C(═CF2)—, —C(═CHCl)—, —C(═CHBr)—, —C(═CHOCHF2)—, —C(═CHOCF3)—, —C(═CHOCH2CF3)—,
R6 represents hydrogen, amino, nitro, cyano, carboxyl, carbamoyl, fluorine, chlorine, bromine, methyl, ethyl, n- or i-propyl, cyclopropyl, difluoromethyl, trifluoromethyl, chlorodifluoromethyl, methoxy, ethoxy, n- or i-propoxy, difluoromethoxy, trifluoromethoxy, chlorodifluoro-methoxy, methylthio, ethylthio, n- or i-propylthio, difluoromethylthio, trifluoromethylthio, chlorodifluoromethylthio, methylamino, ethylamino, n- or i-propylamino, dimethylamino, diethylamino, methoxycarbonyl or ethoxycarbonyl, and
R7 represents hydrogen, hydroxyl, amino, cyano, methyl, ethyl, n- or i-propyl, difluoromethyl, methoxy, ethoxy, n- or i-propoxy.
0. 1. A substituted aromatic thiocarboxamide of the formula ##STR00197##
wherein
R1 represents hydrogen, fluorine, chlorine or bromine,
R2 represents the following group

—A1—A2—A3
in which
A1 represents a single bond, or represents oxygen, sulphur, —SO—, —SO2—, —CO— or the group —N(A4)—, in which A4 represents hydrogen, hydroxyl, C1-C4-alkyl, C3-C4-alkenyl, C3-C4-alkinyl, C1-C4-alkoxy, phenyl, C1-C4-alkylsulphonyl or phenylsulphonyl,
A1 additionally represents in each case optionally fluorine- or chlorine-substituted C1-C6-alkanediyl, C2-C6-alkenediyl, C2-C6-alkinediyl, C3-C6-cycloalkanediyl, C3-C6-cycloalkenediyl or phenylene,
A2 represents a single bond, or represents oxygen, sulphur, —SO—, —SO2—, —CO— or the group —N—(A4)—, in which A4 represents hydrogen, hydroxyl, C1-C4-alkyl, C3-C4-alkenyl, C3-C4-alkinyl, C1-C4-alkoxy, phenyl, C1-C4-alkylsulphonyl or phenylsulphonyl,
A2 additionally represents in each case optionally fluorine- or chlorine-substituted C1-C6-alkanediyl, C2-C6-alkenediyl, C2-C6-alkinediyl, C3-C6-cycloalkanediyl, C3-C6cycloalkenediyl or phenylene,
A3 represents hydrogen, hydroxyl, amino, cyano, isocyano, thiocyanato, nitro, carboxyl, carbamoyl, thiocarbamoyl, sulpho, chlorosulphonyl, halogen, or represents in each case optionally halogen- or C1-C4-alkoxy-substituted alkyl, alkoxy, akylthio, alkylsulphinyl, alkylsulphonyl, alkylamino, dialkylamino, alkoxycarbonyl or dialkoxy(thio) phosphoryl having in each case 1 to 6 carbon atoms in the alkyl groups, or represents in each case optionally halogen-substituted alkenyl, alkenyloxy, alkenylamino, alkylideneamino, alkenyloxycarbonyl, alkinyl, alkinyloxy, alkinylamino or alkinyloxycarbonyl having in each case 2 to 6 carbon atoms in the alkenyl, alkylidene or alkinyl groups, or represents in each case optionally halogen-, cyano-, carboxyl-, C1-C4-alkyl- and/or C1-C4-alkoxy-carbonyl-substituted cycloalkyl, cycloalkyloxy, cycloalkylalkyl, cycloalkylalkoxy, cycloalkylideneamino, cycloalkyloxycarbonyl or cycloalkylalkoxycarbonyl having in each case 3 to 6 carbon atoms in the cycloalkyl groups and optionally 1 to 4 carbon atoms in the alkyl groups, or represents in each case optionally nitro-, cyano-, carboxyl-, halogen-, C1-C4-alkyl-, C1-C4-halogenalkyl-, C1-C4-alkoxy-, C1-C4-halogenoalkyloxy- and/or C1-C4-alkoxy-carbonyl-substituted phenyl, phenyloxy, phenyl-C1-C4-alkyl, phenyl-C1-C4-alkoxy, phenyloxycarbonyl or phenyl-C1-C4-alkoxycarbonyl, (in each case optionally totally or partially hydrogenated) pyrrolyl, pyrazolyl, imidazolyl, triazolyl, furyl, thienyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, pyridinyl, pyrimidinyl, triazinyl, pyrazolyl-C1-C4-alkyl, furyl-C1-C4-alkyl, thienyl-C1-C4-alkyl, oxazolyl-C1-C4-alkyl isoxazole-C1-C4-alkyl, thiazole-C1-C4-alkyl, pyridinyl-C1-C4-alkyl, pyrimidinyl-C1-C4-alkyl, pyrazolylmethoxy or furylmethoxy, or represents perhydropyranylmethoxy or pyridylmethoxy,
R3 represents hydrogen, fluorine, chlorine or bromine or together with R2 represents an alkanediyl or alkenediyl group having in each case up to 4 carbon atoms which optionally contains at the beginning (or end) or within the hydrocarbon chain an oxygen atom, a sulphur atom, an SO2 group, an nh group, an N—C1-C4-alkyl group, a carbonyl group and/or a thiocarbonyl group, and
Z represents Z3: ##STR00198##
wherein:
Q1 represents a group from the series —CO—, —CS—, —CH2—, —CH(OH)—, —CHCl—, —CHBr—, —C(═CH2)—, —C(═CHF)—, —C(═CF2)—, —C(═CHCl)—, —C(═CHBr)—, —C(═CHOCHF3)—, —C (═CHOCF3)—, —C(═CHOCH2CF3)—,
R6 represents hydrogen, amino, nitro, cyano, carboxyl, carbamoyl, fluorine, chlorine, bromine, methyl, ethyl, n- or i-propyl, cyclopropyl, difluoromethyl, trifluoromethyl, chlorodifluoromethyl, methoxy, ethoxy, n- or i-propoxy, difluoromethoxy, trifluoromethoxy, chlorodifluoro-methoxy, methylthio, ethylthio, n- or i-propylthio, difluoromethylthio, trifluoromethylthio, chlorodifluoromethylthio, methylamino, ethylamino, n- or i-propylamino, dimethylamino, diethylamino, methoxycarbonyl or ethoxycarbonyl, and
R7 represents hydrogen, hydroxyl, amino, cyano, methyl, ethyl, n- or i-propyl, difluoromethyl, methoxy, ethoxy, n- or i-propoxy.
3. A substituted aromatic thiocarboxamide of the formula (I) according to claim 2, wherein
R1 represents hydrogen, fluorine, or chlorine,
R2 represents the following group

—A1—A2—A3
in which
A1 represents a single bond, or represents oxygen, sulphur, —SO—, —SO2—, —CO— or the group —N(A4)—, in which A4 represents hydrogen, hydroxyl, methyl, ethyl, n- or i-propyl, methoxy, ethoxy, n- or i-propoxy, methylsulphonyl or ethylsulphonyl,
A1 additionally represents methylene, ethane-1,1-diyl, ethane-1,2-diyl, propane-1,1-diyl, propane-1,2-diyl, propane-1,3-diyl, ethene-1,2-diyl, propene-1,2-diyl, propene-1,3-diyl, ethine-1,2-diyl, propine-1,2-diyl or propine-1,3-diyl,
A2 represents a single bond, or represents oxygen, sulphur, —SO—, —SO2—, —CO— or the group —N(A4)—, in which A4 represents hydrogen, hydroxyl, methyl, ethyl, n- or i-propyl, methoxy, ethoxy, n- or i-propoxy, methylsulphonyl, ethylsulphonyl, n- or i-propylsulphonyl or phenylsulphonyl,
A2 additionally represents methylene, ethane-1,1-diyl, ethane-1,1-diyl, ethane-1,2-diyl, propane-1,1-diyl, propane-1,2-diyl, propane-1,3-diyl, ethene-1,2-diyl, propene-1,2-diyl, propene-1,3-diyl, ethine-1,2-diyl, propine-1,2-diyl or propine-1,3-diyl,
A3 represents hydrogen, hydroxyl, amino, cyano, nitro, carboxyl, carbamoyl, sulpho, fluorine, chlorine, bromine, or represents in each case optionally fluorine-, chlorine-, methoxy- or ethoxy-substituted methyl, ethyl, n- or i-propyl, n-, i-, s- or t-bytyl, n-, i-, s- or t-pentyl, methoxy, ethoxy, n- or i-propoxy, n-, i-, s- or t-butoxy, n-, i-, s- or t-pentyloxy, methylthio, ethylthio, n- or i-propylthio, n-, i-, s-, or t-butylthio, methylsulphinyl, ethylsulphinyl, n- or i-propylsulphinyl, methylsulphonyl, ethylsulphonyl, n- or i-propylamino, n-, i-, s- or t-butylamino, dimethylamino, diethylamino, methoxycarbonyl, ethoxycarbonyl, n- or i-propoxycarbonyl, dimethoxy-phosphoryl, diethoxyphosphoryl, dipropoxy-phosphoryl or diisopropoxyphosphoryl, or represents in each case optionally fluorine- or chlorine-substituted propenyl, butenyl, propenyloxy, butenyloxy, propenylamino, butenylamino, propylideneamino, butylideneamino, propenyloxycarbonyl, butenyloxycarbonyl, propinyl, butinyl, propinyloxy, butinyloxy, propinylamino, butinylamino, propinyloxycarbonyl or butinyloxycarbonyl, or represents in each case optionally fluorine-, chlorine-, cyano-, carboxyl-, methyl-, ethyl-, n- or i-propyl-, methoxycarbonyl- or ethoxycarbonyl-substituted cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropyloxy, cyclobutyloxy, cyclopentyloxy, cyclohexyloxy, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, cyclopropylmethoxy, cyclobutylmethoxy, cyclopentylmethoxy, cyclohexylmethoxy, cyclopentylideneamino, cyclohexylideneamino, cyclopentyloxycarbonyl, cyclohexyloxycarbonyl, cyclopentylmethoxycarbonyl or cyclohexylmethoxycarbonyl, pr represents in each case optionally nitro-, cyano-, carboxyl-, fluorine-, chlorine-, bromine-, methyl-, ethyl-, n- or i-propyl, thifluoromethyl-, methoxy-, ethoxy-, n- or i-propoxy-, difluoromethoxy-, trifluoromethoxy-, methoxycarbonyl- and/or ethoxycarbonyl-substituted phenyl, phenyloxy, benzyl, phenylethyl, benzyloxy, phenyloxycarbonyl, benzyloxycarbonyl, (in each case optionally completely or partially hydrogenated) pyrrolyl, pyrazolyl, imidazolyl, triazolyl, furyl, thienyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, pyridinyl, pyrimidinyl, triazinyl, pyrazolylmethyl, furylmethyl, thienylmethyl, oxazolylmethyl, isoxazolemethyl, thiazolmethyl, pyridinylmethyl, pyrimidinylmethyl, pyrazlylmethoxy, furylmethoxy or pyridylmethoxy, and
R3 represents hydrogen, fluorine or chlorine or together with R2 represents an alkanediyl or alkenediyl group having in each case 1 to 3 carbon atoms which optionally contains at the beginning (or end) or within the hydrocarbon chain an oxygen atom, a sulphur atom, an nh group, an N-methyl group, a carbonyl group and/or a thiocarbonyl group.
4. A process for the preparation of a substituted aromatic thiocarboxamide of the formula (I) ##STR00201##
in which R1, R2, R3 and Z have the meanings given in claim 2, comprising reacting a substituted aromatic nitrile of the formula (II) ##STR00202##
in which
R1, R2, R3 and Z have the meanings indicated above, with hydrogen sulphide (H2S) or with thioacetamide, optionally in the presence of a reaction auxiliary and optionally in the presence of a diluent.
0. 5. A method of combatting unwanted plants comprising applying to said plants and/or heir habitat a herbicidally effective amount of at least one substituted aromatic thiocarboxamide of the formula (I) according to claim 1 or 2.
0. 6. A herbicidal composition comprising a herbicidally effective amount of at least one substituted aromatic thiocarboxamide of the formula (I) according to claim 2 or 3 and at least one extender and/or surfactant.
0. 7. A method of combatting unwanted plants comprising applying to said plants and/or their habitat a herbicidally effective amount of at least one substituted aromatic thiocarboxamide of the formula (I) according to claim 2 or 3.

This application is a divisional of application Ser. No. 08/732,257, filed on Oct. 28, 1996 (now U.S. Pat. No. 6,077,813), which is a 371 of PCT/EP95/01507, filed Apr. 21, 1995.

The invention relates to novel substituted aromatic thiocarboxamides, to processes for their preparation and to their use as herbicides.

It is already known that certain aromatic carbothioamides, for example 2,6-dichloro-benzothioamide (“chlorthiamid”), possess herbicidal properties (cf. GB-B 987253). However, the activity of this previously known compound, especially at low application rates and concentrations, is not entirely satisfactory in all areas of application.

The novel substituted aromatic thiocarboxamides have now been found of the general formula (I) ##STR00002##
in which

The novel substituted aromatic thiocarboxamides of the general formula (I) are obtained if substituted aromatic nitrites of the general formula (II) ##STR00003##
in which

R1, R2, R3 and Z have the meanings given above are reacted with hydrogen sulphide (H2S) or with thioacetamide, optionally in the presence of a reaction auxiliary and optionally in the presence of a diluent.

The novel substituted aromatic thiocarboxamides of the general formula (I) are notable for strong and selective herbicidal activity.

In the definitions, the saturated or unsaturated hydrocarbon chains, such as alkyl, alkanediyl, alkenyl or alkinyl—alone or in conjunction with heteroatoms, such as in alkoxy, alkylthio or alkylamino - are each straight-chain or branched.

Halogen generally represents fluorine, chlorine, bromine or iodine, preferably fluorine, chlorine or bromine, especially fluorine or chlorine.

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

The invention particularly relates to compounds of the formula (I) in which

Very particularly preferred groups of compounds of the formula (I) are the compounds of the formula (Ia), (Ib) and (Ic) drawn below ##STR00004##

The definitions of radicals listed above, indicated in general or in ranges of preference, apply both to the end products of the formula (I) and, correspondingly, to the repsective starting materials and intermediates required for preparation. These radical definitions can be combined as desired with one another, which therefore includes any desired combinations between the indicated ranges of preferred compounds.

Examples of the compounds of the formula (I) according to the invention are listed in the groups below.

Group 1

(IA-1)
##STR00008##
In this formula,
R1, R2 and R3 have the meanings indicated in the following list:
Synthesis
Ex. No. R1 R2 R3
1 H F H
2 H Cl H
3 H Cl Cl
4 Cl F H
5 F F H
6 F F Cl
7 F CH3 H
8 F C2H5 H
9 F —CH2Cl H
10 F F F
11 F —NHC2H5 H
12 F —CH2CN H
13 F —N(CH3)SO2C2H5 H
14 Cl —N(CH3)SO2C2H5 H
15 Cl —N(CH3)SO2C2H5 Cl
16 F —NH—COCF3 H
17 F —OH H
18 Cl —OH H
19 F —CH(CH3)2 H
20 F —NH—SO2—CH3 H
21 F —SO2—CH3 H
22 F —SO2—O—CH3 H
23 F —SO2—NH—CH3 H
24 F —COOCH3 H
25 F —CO—NH—CH3 H
26 Cl —COOCH3 Cl
27 Cl —COOC2H5 H
28 F —O—C2H5 H
29 F —N(C2H5)SO2C2H5 H
30 F —N(SO2CH3)2 H
31 F —CO—N(CH3)2 H
32 F —S—CH2—C≡CH H
33 Cl —S—CH2C═CH F
34 F —S—CH2—CH≡CH Cl
35 F —O—CH(CH3)—C≡CH H
36 F —S—CH2—COOCH3 H
37 F —O—CH2CH2—OCH3 H
38 F —O(CH2CH2O)2CH3 H
39 F —O—CH2—CH═CH2 H
40 F —O—CH2—C≡CH H
41 F —SH H
42 F —S—CH2 H
43 F —S—C2H5 H
44 F —S—CH(CH3)2 H
45 F —O—CH2—CF3 H
46 F —O—CH(CH2F)2 H
47 F ##STR00009## H
48 F ##STR00010## H
49 F —NH—SO2C2H5 H
50 Cl —NH—SO2C2H5 H
51 F —NH—SO2C2H5 Cl
52 F —NH—SO2CH(CH3)2 H
53 F —NH—SO2C4H9 H
54 F —N═CH—OC2H5 H
55 F —N═C(CH3)OC2H5 H
56 F —N═C(OCH3)2 H
57 F —N═CH—N(CH3)2 H
58 F —SCN H
59 F —SO2Cl H
60 F —O—CS—N(CH3)2 H
61 F —S—CO—N(CH3)2 H
62 F —NH—P(O)(CH3)OC2H5 H
63 F —NH—P(O)(OC2H5)2 H
64 F —NH—COC2H5 H
65 F —N(CH3)COCF3 H
66 F —NH—COCH(CH3)2 H
67 F —NH—CO—CO—C(CH3)3 H
68 F —NH—CO—NH2 H
69 F —NH—CO—NHCH3 H
70 F —NH—CO—N(CH3)2 H
71 F —N(COCH3)2 H
72 F —NH—COCH(CH2)Cl H
73 F —S—CH2—CH═CH2 H
74 Cl —S—CH2—CH═CH2 H
75 F —S—CH(CH3)C≡CH H
76 F —S—CH(CH3)COOC2H5 H
77 F —S(O)—CH3 H
78 F ##STR00011## H
79 F ##STR00012## H
80 F ##STR00013## H
81 F ##STR00014## H
82 F ##STR00015## H
83 F ##STR00016## H
84 F —O—CH2—CN H
85 F —O—SO2CH3 H
86 F —OCH2—CH(Cl)═CH2 H
87 F —O—CH2—COOCH3 H
88 F —O—CHF2 H
89 F —OCOOCH2CH2Cl H
90 F —OCH2P(O)(OC2H5)2 H
91 Cl —O—CH(CH3)P(O)(OC2H5)2 H
92 F ##STR00017## H
93 F ##STR00018## H
94 F —O—N(C2H5)2 H
95 F ##STR00019## H
96 F ##STR00020## H
97 F ##STR00021## Cl
98 Cl ##STR00022## H
99 F ##STR00023## F
100 F ##STR00024## H
101 F ##STR00025## H
102 F ##STR00026## H
103 F —NCH(CH3)2SO2C2H5 H
104 F —N(CH3)SO2CH(CH3)2 H
105 H —N(CH3)SO2C2H5 Cl
106 Cl —N(CH3)SO2C4H9 H
107 F —N(CH3)SO2C2H5 H
108 F —N(CH3)SO2CH3 H
109 F —N(SO2C2H5)2 H
110 F —N(SO2CH3)SO2C2H5 H
111 F ##STR00027## H
112 F —N(CH3)2 H
113 F —NH2 H
114 Cl —NH2 H
115 Cl —O—CH(CH3)2 H
116 F —O—CH(CH3)2 H
117 F ##STR00028## H
118 Cl ##STR00029## H
119 F —O—CH2—COOC2H5 H
120 F —S—CH2—COOCH3 H
121 F —S—CH2—COOC2H5 H
122 Cl —S—CH2—COOC2H5 H
123 F —CH2—CH(Cl)COOCH3 H
124 F —CH2—CH(Cl)COOC2H5 H
125 F —CH2—CH(Cl)CONHC2H5 H
126 Cl —CH2—CH(Cl)CONHC2H5 H
127 Cl ##STR00030## H
128 F ##STR00031## H
129 F —COOC3H7-i H

Group 2 ##STR00032##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 3 ##STR00033##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 4 ##STR00034##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 5 ##STR00035##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 6 ##STR00036##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 7 ##STR00037##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 8 ##STR00038##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 9 ##STR00039##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 10 ##STR00040##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 11 ##STR00041##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 12 ##STR00042##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 13 ##STR00043##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 14 ##STR00044##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 15 ##STR00045##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 16 ##STR00046##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 17 ##STR00047##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 18 ##STR00048##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 19 ##STR00049##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 20 ##STR00050##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 21 ##STR00051##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 22 ##STR00052##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 23 ##STR00053##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 24 ##STR00054##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 25 ##STR00055##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 26 ##STR00056##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 27 ##STR00057##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 28 ##STR00058##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 29 ##STR00059##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 30 ##STR00060##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 31 ##STR00061##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 32 ##STR00062##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 33 ##STR00063##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 34 ##STR00064##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 35 ##STR00065##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 36 ##STR00066##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 37 ##STR00067##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 38 ##STR00068##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 39 ##STR00069##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 40 ##STR00070##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 41 ##STR00071##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 42 ##STR00072##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 43 ##STR00073##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 44 ##STR00074##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 45 ##STR00075##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 36 ##STR00076##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 47 ##STR00077##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 48 ##STR00078##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 49 ##STR00079##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 50 ##STR00080##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 51 ##STR00081##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 52 ##STR00082##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 53 ##STR00083##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 54 ##STR00084##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 55 ##STR00085##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 56 ##STR00086##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 57 ##STR00087##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 58 ##STR00088##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 59 ##STR00089##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 60 ##STR00090##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 61 ##STR00091##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 62 ##STR00092##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 63 ##STR00093##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 64 ##STR00094##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 65 ##STR00095##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 66 ##STR00096##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 67 ##STR00097##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 68 ##STR00098##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 69 ##STR00099##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 70 ##STR00100##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 71 ##STR00101##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 72 ##STR00102##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 73 ##STR00103##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 74 ##STR00104##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 75 ##STR00105##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 76 ##STR00106##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 77 ##STR00107##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 78 ##STR00108##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 79 ##STR00109##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Table 80 ##STR00110##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 81 ##STR00111##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 82 ##STR00112##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 83 ##STR00113##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 84 ##STR00114##

In this formula, R1, R2 and R3 have, for example, the meanings indicated above in Group 1.
Group 85 ##STR00115##

In this formula, R1, R4 and R5 have the meanings indicated in the following list:

Ex. No. R1 R4 R5
1 F CH3 CH3
2 Cl CH3 CH3
3 H CH3 CH3
4 F Cl CH3
5 F Cl Cl
6 F C2H3 CH3

Group 86 ##STR00116##

In this formula, R1, R4 and R5 have, for example, the meanings indicated above in Group 85.
Group 87 ##STR00117##

In this formula, R1, R4 and R5 have, for example, the meanings indicated above in Group 85.
Group 88 ##STR00118##

In this formula, R1, R4 and R5 have, for example, the meanings indicated above in Group 85.
Group 89 ##STR00119##

In this formula, R1, R4 and R5 have, for example, the meanings indicated above in Group 85.

Using, for example, 2-(2-fluoro-4-cyano-5-methoxyphenyl)-4-methyl-5-difluoromethyl-2,4-dihydro-3H-1,2,4-triazol-3-one and hydrogen sulphide as starting materials, the course of reaction of the process according to the invention can be illustrated by the following equation: ##STR00120##

A general definition of the substituted aromatic nitriles to be used as starting materials in the process according to the invention for the preparation of the compounds of the general formula (I) is given by the formula (II). In the formula (II), R1, R2, R3 and Z preferably or in particular having those meanings which have already been indicated above, in connection with the description of the compounds of the formula (I), as preferred or, respectively, as particularly preferred for R1, R2, R3 and Z.

The starting materials of the formula (II) are known and/or can be prepared by known processes (cf. EP-A 370332; DE-A 4238125; DE-A 4303376; U.S. Pat. No. 5,084,084; Preparation Examples).

Suitable diluents for carrying out the process according to the invention are the customary organic solvents. These include, in particular, aliphatic, ahcyclic or aromatic, optionally halogenated hydrocarbons, for example benzine, benzene, toluene, xylene, chlorobenzene, dichlorobenzene, petroleum ether, hexane, cyclohexane, dichloromethane, chloroform, tetrachloromethane; ethers, such as diethyl ether, diisopropyl ether, dioxane, tetrahydrofuran or ethylene glycol dimethyl or diethyl ether; ketones, such as acetone, butanone or methyl isobutyl ketone; nitrites, such as acetonitrile, propionitrile or benzonitrile; amides, such as N,N-dimethylformamide, N,N-dimethylacetamide, N-methylformanilide, N-methylpyrrolidone or hexamethylphosphoric triamide; esters, such as methyl acetate or ethyl acetate, sulphoxides, such as dimethyl sulphoxide, azines, such as pyridine, alcohols, such as methanol, ethanol n- or i-propanol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, mixtures thereof with water, or pure water.

The process according to the invention is preferably carried out in the presence of a suitable reaction auxiliary. Suitable such auxiliaries are all customary inorganic or organic bases. These include, for example, alkaline earth metal or alkali metal hydrides, hydroxides, amides, alcoholates, acetates, carbonates or hydrogen carbonates, for example sodium hydride, sodium amide, sodium methylate, sodium ethylate, potassium-tert-butylate, sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium acetate, potassium acetate, calcium acetate, ammonium acetate, sodium carbonate, potassium carbonate, potassium hydrogen carbonate, sodium hydrogen carbonate or ammonium carbonate and also basic organic nitrogen compounds, such as trimethylamine, triethylamine, tributylamine, N,N-methylaniline, pyridine, N-methylpiperidine, N,N-dimethylaminopyridine, diazabicyclooctane (DABCO), diazabicyclononene (DBN) or diazabicycloundecene (DBU).

The reaction temperatures when carrying out the process according to the invention can be varied within a relatively large range. It is generally carried out at temperatures between 0° C. and 100° C., preferably at temperatures between 10° C. and 80° C.

The process according to the invention is generally carried out under atmospheric pressure. However, it is also possible to operate under elevated or reduced pressure, generally between 0.1 bar and 10 bar.

To carry out the process according to the invention the starting materials of the formula (II) are introduced, generally in a suitable diluent in the presence of a reaction auxiliary, and the hydrogen sulphide or the thioacetamide is slowly metered in. The hydrogen sulphide or the thioacetamide are preferably employed in a relatively large excess. The reaction mixture is stirred for a number of hours at the particular temperature required. Working up in the process according to the invention is effected in each case in accordance with customary methods (cf. the Preparation Examples). The active compounds according to the invention can be used as defoliants, desiccants, haulum killers and, especially, as weedkillers. 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 especially on the amount used.

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

Dicotyledon 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.

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

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

Monocotyledon 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.

Depending on the concentration, the compounds are suitable for total weed control, for example on industrial terrain and rail tracks, and on paths and areas with or without tree stands. Equally, the compounds can be employed for controlling weeds in perennial crops, for example forests, ornamental 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 pastures, and for selective weed control in annual crops.

The compounds of the formula (I) according to the invention are particularly suitable for selective control of monocotyledon and dioctyledon weeds in monocotyledon and dicotyledon crops, but pre- and post-emergence.

To a certain extent, the compounds of the formula (I) also show a fungicidal action, for example against Pyricularia oryzae in rice.

The active compounds can be converted into the customary formulations, such as solutions, emulsions, wettable powders, suspensions, powders, dust, pastes, soluble powders, granules, suspoemulsion concentrates, natural and synthetic materials impregnated with active compound, and microencapsulations 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 surfactants, that is emulsifiers and/or dispersants and/or foam-formers.

If water is used as an extender, organic solvents can, for example, also be used as auxiliary solvents. Liquid solvents which are mainly suitable are: 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, and water.

Suitable solid carriers are:

for example ammonium salts and ground natural minerals such as kaolins, clays, talc, chalk, quartz, attapulgite, montinorillonite or diatomaceous earth, and ground synthetic minerals such as highly disperse 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, or else synthetic granules of inorganic and organic metals, and granules of organic material such as sawdust, coconut shells, maize cobs and tobacco stalks; suitable emulsifiers and/or foam-formers 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 and protein hydrolysates; suitable dispersants 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 latexes such as gum arabic, polyvinyl alcohol and polyvinyl acetate, or else 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 colourants such as inorganic pigments, for example iron, oxide, titanium oxide and Prussian Blue, and organic dyes such as alizarin dyes, axo dyes and metal phthalocyanine dyes, and trace nutrients such as salts of iron, manganese, boron, copper, cobalt, molybdenum and zinc.

The formulations generally comprise between 0.1 and 95 percent 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, finished formulations or tank mixes being possible.

Possible components for the mixtures are known herbicides, examples being anilides, for example, diflufenican and propanil, arylcarboxylic acids, for example dichloropicolinic acid, dicamba and picloram; aryloxyalkanoic acids, for example 2,4 D, 2,4 DB, 2,4 DP, fluroxypyr, MCPA, MCPP and triclopyr, aryloxy-phenoxy-alkanoic esters, for example diclofop(-methyl), fenoxaprop(-ethyl), fluazifop(-butyl), haloxyfop(-methyl) and quizalofop(-ethyl); azinones, for example chloridazon and norfluorazon; carabamates, for example chlorpropham, desmedipham, phenmaedipham and propham; chloroacetanildes, for example alachlor, acetochlor, butachlor, metazachlor, metalachlor, pretilachlor and propachlor; dinitroanilines, for example oryzalin, pendimethalin and trifluralin; diphenyl ethers, for example aciffuorfen, bifenox, chlormethoxynil (X-52), chlornitrofen, fluoroglycofen, fomesafen, halosafen, lactofen, nitrofen and oxyfluorfen; ureas, for example chlortoluron, cumyluron (JC-940), diuron, dymron (daimuron), fluormeturon, isoproturon, linuron and methabenzathiazuron; hyroxylamines, for example alloxydim, clethodim, cycloxydim, sethoxydim and tralkoxydim; imidazolinones, for example imazethapyr, imazamethabenz, imazapyr and imazaquin; nitriles, for example bromoxynil, dichlorobenil and ioxynil; oxyacetamides, for example mefenacet; sulphonylureas, for example AC-014 (AC-322140), amidosulfuron, bensulfonuron(-methyl), chlorimuron(-ethyl), chlorsulfuron, cinosulfuron, DPX-47, HOE-404, imazosulfuron, metasulfuron(-methyl), nicosulfuron, primisulfuron, pyrazosulfuron(-ethyl), thifensulfouron(-methyl), triasulfuron and tribenuron(-methyl); thiocarbamates, for example butylate, cycloate, diallate, dimepiperate, EPTC, esprocarb, molinate, prosulphocarb, thiobencarb (benthiocarb) and triallate; triazines, for example atrazine, cyanazine, dimethametyn, promeltryne, simazin, simetryne, terbutryne and terbutylazin; triazinones, for example hexazinon, metamitron and metribuzin; others, for example aminotriazole, benfuresale, bensulide, bentazone, benzofenap, bromobutide, butamifos, cafenstrole (CH-900), cinmethylin, clomazone, clomeprop, clopyralid, DEH-112, difenzoquat, dimethenamid, dithiopyr, ethofumesate, flumetsulam, fluorochloridone, glufosinate, glyphosate; aminoprophos(-methyl), anilofos, etobenzamid (HW-52), isoxaben, KPP-314, KUH-833, KUH-911, KUH-920, MK-243, naproanilide, KSK-850, oxadiazon, piperophos, propanil, pyrazolate, pyrazoxyfen, pyributicarb, pyridate, quinchlorac, quinmerac, sulphosate and tridiphane.

Mixtures with other known active compounds, such as fungicides, insecticides, acaricides, nematicides, bird repellants, plant nutrients and soil conditioners, 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 already-to-use solutions, suspensions, emulsions, powders, pastes and granules. They are used in the customary manner, for example by watering, spraying, atomizing or spreading.

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 10 g and 10 kg of active compound per hectare of soil surface, preferably between 50 g and 5 kg per ha

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

##STR00121##

Hydrogen sulphide is passed at from 50° C. to 60° C. to saturation point into a mixture of 5.5 g (15 mmol) of 2-(4-cyano-2-fluoro-5-ethylsulphonylamino-phenyl)-5,6,7,8-tetrahydro-1,2,4-triazole[4,3-a]pyridin-3-(2H)one, 5 ml of triethylamine and 50 ml of pyridine and the mixture is stirred at 60° C. for 30 minutes more. It is then concentrated in vacuo, the residue is stirred with 2 N hydrochloric acid and the solids are filtered off. The solid product is recrystallized from isopropanol.

4.8 g (80% of theory) of 2-2-fluoro-5-ethylsulphonylamino-4-thiocarbamoyl-phenyl)-5,6,7,8-tetrahydro-1,2,4triazolo[4,3-a]pyridin-3(2H)-one are obtained of melting point 220° C.

##STR00122##

4.04 g (0.04 mol) of triethylamine are added to 6.3 g (0.02 mol) of 2-(2-fluoro-4-cyano-5-amino-phenyl)-4-ethyl-5-trifluoromethyl-2,4-dihydro-3H-1,2,4-triazol-3-one in 100 ml of acetone. Hydrogen sulphide is passed in rapidly at 23° C., and the internal temperature rises to 33° C. The reaction is complete after 1 hour. The solution is concentrated on a rotary evaporator and the residue is recrystallized from isopropanol.

2.9 g (42% theory) of 2-(4-fluoro-4-thiocarbamoyl-5-amino-phenyl)-4-ethyl-5-trifluoromethyl-2,4-dihydro-3H-1,2,4-triazol-3-one are obtained of melting point 161° C.

##STR00123##

11 g (0.0276 mol) of 2-(2-fluoro-4-cyano-5-ethylsulphonylaminophenyl)-4-methyl-5-difluoromethyl-2,4-dihydro-3H-1,2,4-triazole-3-thione are stirred at 70° C. for 4.5 hours in 100 ml of pyridine while passing in hydrogen sulphide. The solution is concentrated on a rotary evaporator, the residue is stirred in water, the mixture is acidified with concentrated hydrochloric acid, and precipitated product is filtered off, washed with water and recrystallized from isopropanol.

9 g (77% of theory) of 2-(2-fluoro-4-thiocarbamoyl-5-ethylsulphonylaminophenyl)-4-methyl-5-difluoromethyl-2,4dihydro-3H-1,2,4-triazole-3-thione are obtained of melting point 183° C.

In analogy to Preparation Examples 1, 2 and 3 and in accordance with the general description of the preparation process according to the invention it is also possible, for example, to prepare the compounds of the formula (I) listed in Table 1 below.

TABLE 1
Examples of the compounds of the formula (I)
(I)
##STR00124##
Melting
Ex. No. R1 R2 R3 Z point (° C.)
4 F F H ##STR00125## 110
5 F —NH—SO2—C2H5 H ##STR00126## 143
6 F ##STR00127## H ##STR00128## 162
7 F —NH—SO2—C2H5 H ##STR00129## 237 (Triethyl- ammonium salt)
8 F F H ##STR00130## 220
9 F —NH—SO2—C2H5 H ##STR00131## 218
10 F —NH—SO2—C2H5 H ##STR00132## 185
11 F F H ##STR00133## 218
12 F —OC2H5 H ##STR00134## 202
13 F —NH—SO2—C2H5 H ##STR00135## 210
14 F —NH—SO2—C2H5 H ##STR00136## 203
15 F F H ##STR00137## 185
16 F ##STR00138## H ##STR00139## 170
17 F —OCH(CH3)2 H ##STR00140## 206
18 F OH H ##STR00141## 250
19 F ##STR00142## H ##STR00143## 98
20 F —NH—SO2—C2H5 H ##STR00144## 208
21 F —NH—SO2—C2H5 H ##STR00145## 53
22 F —NH—SO2—C2H5 H ##STR00146## (amorphous)
23 F —NH—SO2—C2H5 H ##STR00147## 183
24 F ##STR00148## H ##STR00149## 167
25 F —NH—SO2—CH3 H ##STR00150## 130
26 F —NH—SO2—CH3 H ##STR00151## 243
27 F F H ##STR00152## 199
28 F —NH—SO2—C2H5 H ##STR00153## 202
29 F —NH—SO2—CH3 H ##STR00154## 200
30 F —NH—SO2—CH(CH3)2 H ##STR00155## 204
31 F —NH—SO2—C2H5 H ##STR00156## 195
32 F ##STR00157## H ##STR00158## 122
33 F —O—CH2—C≡CN H ##STR00159## 190
34 F —NH—SO2—CH3 H ##STR00160## 178
35 F —NH—SO2—C3H7 H ##STR00161## 203
36 F —NH—SO2—C2H5 H ##STR00162## 199
37 F —NH—SO2—C2H5 H ##STR00163## 153
38 F —NH—SO2—C2H5 H ##STR00164## 206
39 F —NH—SO2—C2H5 H ##STR00165## 167
40 F F H ##STR00166## 130
41 F —OCH2CF3 H ##STR00167## 173
42 F —OC2H4OCH3 H ##STR00168## 148
43 F —OC2H5 H ##STR00169## 155
44 F —OC3H7 H ##STR00170## 130
45 F F H ##STR00171## 131
46 F —OCH(CH3)2 H ##STR00172## 202
47 F —OC2H5 H ##STR00173## 185
48 F —NH—SO2—C2H5 H ##STR00174## 111
49 H —NH—SO2—C2H5 H ##STR00175## 118
50 F —NH—SO2—C3H7−n H ##STR00176## 143
51 F —OC2H4OC2H4OCH3 H ##STR00177## 168
52 F —NH—SO2—C3H7−n H ##STR00178## (amorphous)
53 F —NH—SO2—C3H7−n H ##STR00179## 232
54 F —NH—SO2—C3H7−i H ##STR00180## 226
55 F —NH—SO2—C3H7−i H ##STR00181## 187
56 F —NH—SO2—C3H7−i H ##STR00182## 236
57 F —NH—SO2—C3H7−i H ##STR00183## 252
58 F —NH—SO2—C3H7−i H ##STR00184## 109
59 F —NH—SO2—C3H7−i H ##STR00185## 207
60 F —NH—SO2—C3H7−i H ##STR00186## 215
61 F —N(CH3)—SO2C2H5 H ##STR00187## 102
62 F —NH—SO2—C2H5 H ##STR00188## 185
63 Cl —NH—SO2—C2H5 H ##STR00189## 121
64 F F H ##STR00190## 157
65 F —NH—SO2—C2H5 H ##STR00191## 195
66 F —OH H ##STR00192## 193 (decomp) DBU salt

Preparation of the Starting Compounds:

##STR00193##

5.8 g (0.042 mol) of potassium carbonate are added at room temperature to 6.3 g (0.034 mol) of 4-methyl-3-trifluoromethyl-1,2,4-triazolin-5-one (cf. e.g. U.S. Pat. No. 3,780,052) and 5.4 g (0.034 mol) of 2,3,5-trifluorobenzoidtrile (cf. e.g. EP 191181) in 150 ml of dimethyl sulphoxide and the mixture is subsequently heated at 100° C. for 14 hours. For working up, the cooled reaction mixture is placed in water, adjusted to a pH of 2 with dilute hydrochloric acid and subjected several times to extraction with dichloromethane. The combined organic phases are dried over sodium sulphate and concentrated in vacuo. The residue is chromatographed over silica gel (eluent: dichloromethane).

6.2 g (60% of theory) of 1-(4-cyano-2,5-difluorophenyl)-4-methyl-3-trifluoromethyl-1,2,4-triazolin-5-one are obtained of melting point 74° C.

##STR00194##

0.83 g (0.006 mmol) of potassium carbonate is added at room temperature to 1.52 g (0.005 mol) of 1-(4-cyano-2,5-difluorophenyl)-4-methyl-3-trifluoromethyl-1,2,4-triazolin-5-one and 0.48 g (0.005 mol) of methanesulphonamide in 50 ml of dimethyl sulphoxide and the mixture is subsequently heated at 120° C. for 12 hours. For working up, the cooled reaction mixture is placed in water, adjusted to a pH of 2 with dilute hydrochloric acid and subjected several times to extraction with dichloromethane. The combined organic phases are dried over sodium sulphate and concentrated in vacuo. The residue is chromatographed over silica gel (eluent: dichloromethane/methanol 20:1).

0.55 g (28% of theory) of 1-(4-cyano-2-fluoro-5-methylsulphonylaminophenyl)-4-methyl-3-trifluoromethyl-1,2,4triazole-5-one is obtained of melting point 67° C.

##STR00195##

0.3 g (10 mmol) of sodium hydride (80%) is added at from 0° C. to 5° C. to an initial charge of 1.8 g (10 mmol) of ethyl 3-amino-4,4,4-trifluoro-crotonate in 30 ml of dimethylformamide and 2 ml of toluene. The mixture is stirred at from 0° C. to 5° C. for 30 minutes. After the mixture has been cooled to −70° C., 0.9 g (5 mmol) of 4-cyano-2,5-difluorophenyl isocyanate—dissolved in 10 ml of toluene—is added and the mixture is stirred at from −60° C. to −70° C. for 150 minutes. After the cooling bath has been removed, 2 ml of acetic acid are added. The mixture is then diluted with water to about twice the volume and subjected to extraction with ethyl acetate. The organic phase is concentrated and the residue is crystallized with diisopropyl ether.

1.1 g (69% of theory) of 1-(4-cyano-2,5-difluoro-phenyl)-3,6-dihydro-2,6-dioxo-4-trifluoromethyl-1-(2H)-pyrimidine are obtained of melting point 194° C.

##STR00196##

A mixture of 0.83 g (3 mmol) of 1-(4-cyano-2,5-difluorophenyl)-3,6-dihydro-2,6-dioxo-3,4-dimethyl-(2H)-pyrimidine, 0.32 g (3 mmol) of methane sulphonamide, 0.6 g of potassium carbonate and 10 m of dimethyl sulphoxide is heated at 120° C. for 10 hours. After cooling, the mixture is poured into ice-water and acidified with 2 N hydrochloric acid. It is then subjected to extraction with ethyl acetate and the organic phase is washed with water, dried with sodium sulphate and filtered. The solvent is carefully removed from the filtrate by distillation under a water-pump vacuum.

0.8 g (76% of theory) of 1-(4-cyano-2-fluoro-5-methylsulphonylmainophenyl)-3,6-dihydro-2,6-dioxo-3,4-dimethyl-1(2H)-pyrimidine is obtained as crystalline residue (melting point>250° C.).

Use Examples:

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 and, after 24 hours, watered with the preparation of active compound. It is expedient 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:

TABLE A
Pre-emergence test/greenhouse
Active
compound Applica-
(Synthesis tion
Example rate Amaran- Cheno- Matri- Portu- Sola-
Number) (g/ha) Barley Maize thus podium caria laca num
(3) 125 0 0 100 100 100 100 100
(5) 125 0 0 100 100 90 90 100
(6) 125 0 30 100 100 95 100 100
(7) 125 30 0 100 100 95 100 95

TABLE B
Pre-emergence test/greenhouse
Active
compound Applica-
(Synthesis tion
Example rate Abu- Amaran- Cheno- Matri- Portu- Sola-
Number) (g/ha) Wheat Maize thilon thus podium caria laca num
19 60 10 0 100 95 100 100 100 100
20 60 20 0 100 100 100 100 100 100
21 60 0 0 100 100 100 100 100 100
22 250 0 20 100 100 100 100 95 100
23 60 0 0 95 70 95 100 95 70
24 30 0 20 100 95 100 100 100 100
25 30 0 0 100 100 90 100 100 100
26 60 0 0 100 80 100 100 100 90
4 250 0 10 80 50 70 95 90 70
5 125 0 0 10 100 100 70 90 100
3 60 0 0 100 100 100 100 100 100
6 60 20 30 100 100 100 100 100 95
7 125 50 0 95 100 100 95 100 95
8 60 40 0 100 100 100 95 95 100
9 60 0 0 100 100 100 95 90 100
1 125 0 0 100 100 100 95 100 100
12 60 20 0 70 70 100 95 95 70
13 60 0 0 100 100 100 70 90 100
16 60 10 0 95 20 100 90 80 80
17 30 0 0 100 100 100 100 100 100
28 60 0 20 100 100 100 100 100 100
29 60 0 0 100 100 100 100 100 100
30 60 0 0 100 100 100 90 100 100
31 60 0 0 100 100 100 100 100 100
32 30 10 0 100 100 100 95 100
33 30 10 10 95 95 100 100 100 100
34 60 0 0 100 100 100 100 100 100
35 60 0 0 100 100 100 90 95 100
40 250 20 0 30 40 100 95 100 80
41 60 20 30 100 100 100 100 100 100
45 125 0 0 95 100 100 100 90 95
46 60 0 70 100 100 100 100 100 100
47 30 0 0 100 95 100 100 100 100
48 60 0 0 100 100 100 100 100 100
51 30 0 20 100 100 95 100 100

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 active compound is such a way as to apply the particular amounts of active compound desired per unit area. 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:

TABLE C
Post-emergence test/greenhouse
Active
compound Applica-
(Synthesis tion
Example rate Abu- Amaran- Cheno- Sola- Veron-
Number) (g/ha) Wheat Maize thilon thus podium num ica
19 4 5 20 95 95 95 100 100
20 4 0 15 100 95 95 100 95
21 4 5 60 90 100 70 100 100
22 30 15 0 100 100 40 100 20
23 30 0 50 95 90 100 100
24 30 15 70 100 100 100 100 100
25 15 0 50 100 100 100 100 100
26 15 0 30 50 90 50 50 100
5 15 10 20 100 100 100 100 100
3 30 10 30 100 100 100 100 100
6 8 30 50 100 100 100 100 95
7 60 10 50 100 100 95 100 95
8 60 10 30 100 100 100 100 100
9 60 10 30 100 100 100 100 100
1 15 10 50 100 95 95 100 100
12 8 10 30 100 100 95 100 100
13 15 0 30 95 100 80 100 90
16 60 20 60 95 100 100 100 100
17 8 10 10 100 100 95 100 100
28 30 0 30 100 100 90 100 100
29 8 5 0 70 100 90 100 95
30 8 0 50 100 100 95 100 70
31 8 0 70 100 100 90 100 100
32 4 15 30 100 100 95 100 100
33 4 20 60 100 100 100 100 100
34 15 0 30 100 100 100 100 100
35 30 0 25 100 100 90 100 95
40 125 10 5 50 70 100 100 90
41 15 20 50 100 80 90 100 95
43 15 0 50 100 95 100 100 100
44 8 0 15 100 100 100 95 100
45 8 10 40 95 95 95 100
46 8 15 20 100 100 95 100 100
47 8 10 10 100 100 95 100 100
48 8 5 60 100 100 80 100 100
49 8 0 60 60 100 10 100 100
50 15 5 70 100 95 80 100 95
51 15 15 60 100 100 70 100 100

Haas, Wilhelm, Findeisen, Kurt, Santel, Hans-Joachim, Dollinger, Markus, Linker, Karl-Heinz, Andree, Roland, Drewes, Mark-Wilhelm, Lender, Andreas, Schallner, Otto

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