EP0790984A1

EP0790984A1 - Sulphur-substituted phenyl sulphonyl ureas, process for their production and use as herbicides and plant growth regulators

Info

Publication number: EP0790984A1
Application number: EP95937842A
Authority: EP
Inventors: Gerhard Schnabel; Lothar Willms; Klaus Bauer; Hermann Bieringer; Christopher Rosinger
Original assignee: Hoechst Schering Agrevo GmbH
Current assignee: Bayer CropScience AG
Priority date: 1994-11-07
Filing date: 1995-10-25
Publication date: 1997-08-27
Also published as: CA2204612A1; AU3869495A; US5854179A; DE4439676A1; JPH10509442A; BR9509607A; WO1996014303A1

Abstract

Compounds of formula (I) and their salts in which R*, R?1, R2, R3¿, X, Y, Z, W, n and m are as defined in claim 1 and especially R* is a formyl equivalent of the formula CHO, -CH=NR or CH(X1R')(X2R'') are suitable as herbicides and plant growth regulators. They are produced by prior-art like methods, partially with the use of novel intermediate products of the formula (XVII) in which R* = NH¿2?, Cl, (substituted) amino.

Description

description

Sulfur-substituted phenylsulfonylureas; Process for their preparation and use as herbicides and plant growth regulators

The invention relates to the technical field of herbicides and

Plant growth regulators, in particular herbicides for the selective control of weeds and weeds in crops of useful plants.

It is known that heterocyclically substituted phenylsulfonylureas which carry an amino or a functionalized amino group or a sulfur substituent on the phenyl ring have herbicidal and plant growth-regulating properties (EP-A-1515; EP-A-7687; EP-A-30138; US -A-4,892,946; US-A-4,981,509; US-A-4,664,695; US-A-4,632,695; EP-A-116518;

EP-A-23141 (= US-A-4,310,346); US-A-4,369,058; EP-A-84020;

EP-A-192489; DE 42 36 902 A1).

Surprisingly, it has now been found that certain heterocyclically substituted phenylsulfonylureas as herbicides and

Plant growth regulators are particularly well suited.

The present invention relates to compounds of the formula (I) and their salts,

wherein

W is an oxygen atom or a sulfur atom,

m 0, 1, 2 or 3,

n 0, 1 or 2,

R ^{* is} a radical of the formula -CHO, -CH = NR or,

R H, OH, alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy or alkynyloxy, each of the latter 6 radicals being unsubstituted or substituted, or phenyl which is unsubstituted or substituted, or

Acyl, amino, mono- or disubstituted amino,

X ¹ O, S, NH or -N (alkyl) -,

X ² O, S, NH or -N (alkyl) -,

R ', R "independently of one another are hydrogen, alkyl, alkenyl or alkynyl, each of the latter 3 radicals being unsubstituted or substituted by alkoxy, alkylthio or halogen, or together (C ₂ -C ₄ ) alkylene or (C ₂ -C ₄ ) Alkenylene,

R ^{1 is} hydroxy, amino, mono- or disubstituted amino, hydroxylamino, substituted hydroxylamino, hydrazino, substituted hydrazino, an aliphatic hydrocarbon or hydrocarbonoxy radical or aryl, heteroaryl, aryloxy or heteroaryloxy, where each of the 6th

the latter radicals is unsubstituted or substituted,

R ^{2 is} halogen, CN, NO ₂ , amino, mono- or disubstituted amino, alkyl or alkoxy, each of the latter two radicals being unsubstituted or substituted,

R ^{3 is} hydrogen, hydroxy, (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy, (C ₂ -C ₄ ) alkenyl or (C ₂ -C ₄ ) alkynyl, each of the latter 4 radicals being unsubstituted or is substituted by halogen, preferably F, Cl or Br,

X, Y independently of one another hydrogen, hydroxy, amino, mono- or

disubstituted amino, alkyl, cycloalkyl, alkenyl, alkynyl, alkoxy,

Alkenyloxy, alkynyloxy, cycloalkoxy or alkylthio, each of which the latter 9 radicals is unsubstituted or substituted, and

Z is CH, N or, where R ° is halogen, cyano, alkyl, alkoxy,

Is haloalkyl or haloalkoxy,

mean.

In formula (I) and all the following formulas, the alkyl, alkoxy, haloalkyl, haloalkoxy, alkylamino and alkylthio radicals and the corresponding unsaturated and / or substituted radicals in the carbon skeleton can each be straight-chain or branched. Unless specifically stated, the lower carbon skeletons, e.g. with 1 to 6 carbon atoms or in the case of unsaturated groups with 2 to 6 carbon atoms, preferred. Alkyl radicals, also in the composite meanings such as alkoxy, haloalkyl etc., mean e.g. Methyl, ethyl, n- or i-propyl, n-, i-, t- or 2-butyl, pentyls, hexyls, such as n-hexyl, i-hexyl and 1,3-dimethylbutyl, heptyls, such as n-heptyl, 1-methylhexyl and 1,4-dimethylpentyl; Alkenyl and alkynyl radicals have the meaning of the possible unsaturated radicals corresponding to the alkyl radicals; Alkenyl means e.g. Allyl, 1-methylprop-2-en-1-yl, 2-methyl-prop-2-en-1-yl, but-2-en-1-yl, but-3-en-1-yl, 1- Methyl-but-3-en-1-yl and 1-methyl-but-2-en-1-yl; Alkynyl means e.g. Propargyl, but-2-in-1-yl, but-3-in-1-yl, 1-methyl-but-3-in-1-yl.

Halogen means, for example, fluorine, chlorine, bromine or iodine. Haloalkyl, alkenyl and alkynyl mean partly or completely by halogen, preferably by fluorine, chlorine and / or bromine, in particular by fluorine or chlorine

substituted alkyl, alkenyl or alkynyl, for example CF ₃ , CHF ₂ , CH ₂ F, CF ₃ CF ₂ , CH ₂ FCHCl, CCI ₃ , CHCl ₂ , CH ₂ CH ₂ CI; Haloalkoxy is, for example, OCF ₃ , OCHF ₂ , OCH ₂ F, CF ₃ CF ₂ O, OCH ₂ CF ₃ and OCH ₂ CH ₂ CI; The same applies to haloalkenyl and other halogen-substituted radicals.

A hydrocarbon residue is a straight-chain, branched or cyclic and saturated or unsaturated aliphatic or aromatic Hydrocarbon radical, for example alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or aryl; Aryl here means a mono-, bi- or polycyclic aromatic system, for example phenyl, naphthyl, tetrahydronaphthyl, indenyl, indanyl, pentalenyl, fluorenyl and the like, preferably phenyl;

a hydrocarbon radical is preferably alkyl, alkenyl or alkynyl having up to 12 carbon atoms or cycloalkyl having 3, 4, 5, 6 or 7 ring atoms or phenyl; the same applies to a hydrocarbon residue in one

Carbon dioxide residue.

A heterocyclic radical or ring (heterocyclyl) can be saturated, unsaturated or heteroaromatic; it preferably contains one or more

Hetero units in the ring, preferably from the group N, O, S, SO, SO ₂ ;

it is preferably an aliphatic heterocyclyl radical with 3 to 7 ring atoms or a heteroaromatic radical with 5 or 6 ring atoms and contains 1, 2 or 3 hetero units. The heterocyclic residue can e.g. be a heteroaromatic residue or ring (heteroaryl), e.g. a mono-, bi- or polycyclic aromatic system in which at least 1 ring contains one or more heteroatoms, for example pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, thienyl, thiazolyl, oxazolyl, furyl, pyrrolyl, pyrazolyl and imidazolyl, or is a partially hydrogenated one Radical such as oxiranyl, pyrrolidyl, piperidyl, piperazinyl, dioxolanyl,

Morpholinyl, tetrahydrofuryl. Possible substituents for a substituted heterocyclic radical are the substituents mentioned below, and additionally oxo. The oxo group can also be sent to the

Hetero ring atoms which can exist in different oxidation states, e.g. at N and S, occur.

Substituted residues such as substituted hydrocarbon residues e.g. Substituted alkyl, alkenyl, alkynyl, aryl, phenyl and benzyl, or substituted heterocyclyl or heteroaryl, mean, for example, one of the unsubstituted

Base derived derivative radical, where the substituents

for example one or more, preferably 1, 2 or 3, radicals from the group halogen, alkoxy, haloalkoxy, alkylthio, hydroxy, amino, nitro, Carboxy, cyano, azido, alkoxycarbonyl, alkylcarbonyl, formyl, carbamoyl, mono- and dialkylaminocarbonyl, substituted amino such as acylamino, mono- and dialkylamino, and alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl,

Haloalkylsulfonyl and, in the case of cyclic radicals, also alkyl and haloalkyl as well as unsaturated aliphatic radicals corresponding to the saturated hydrocarbon-containing radicals mentioned, such as alkenyl, alkynyl, alkenyloxy, alkynyloxy etc. In the case of radicals with carbon atoms, those with 1 to 4 carbon atoms, in particular 1 or 2 carbon atoms, are preferred. Substituents from the group halogen, for example fluorine and chlorine, (C ₁ -C ₄ ) alkyl, preferably methyl or ethyl, (C ₁ -C ₄ ) haloalkyl, preferably trifluoromethyl, (C ₁ -C ₄ ) alkoxy are generally preferred , preferably methoxy or ethoxy, (C ₁ -C ₄ ) haloalkoxy, nitro and cyano. The substituents methyl, methoxy and chlorine are particularly preferred.

Mono- or disubstituted amino means a chemically stable radical from the group of substituted amino radicals which are, for example, N-substituted by one or two identical or different radicals from the group alkyl, alkoxy, acyl and aryl; preferably monoalkylamino, dialkylamino, acylamino, arylamino, N-alkyl-N-arylamino and N-heterocycles; alkyl radicals having 1 to 4 carbon atoms are preferred; Aryl is preferably phenyl or substituted phenyl; for acyl the following applies

Definition, preferably (C ₁ -C ₄ ) alkanoyl. The same applies to substituted hydroxylamino or hydrazino.

Optionally substituted phenyl is preferably phenyl which is unsubstituted or one or more times, preferably up to three times, by identical or different radicals from the group halogen, (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkyl, (C ₁ -C ₄ ) haloalkoxy and nitro, for example o-, m- and p-tolyl, dimethylphenyl, 2-, 3- and 4-chlorophenyl, 2-, 3- and 4- Trifluoro- and -Trichlorphenyl, 2,4-, 3,5-, 2,5- and 2,3-dichlorophenyl, o-, m- and

p-methoxy phenyl. An acyl residue means the residue of an organic acid, for example the residue of a carboxylic acid and residues of acids derived therefrom, such as thiocarboxylic acid, optionally N-substituted iminocarboxylic acids or the residue of

Carbonic acid monoesters, optionally N-substituted carbamic acid, sulfonic acids, sulfinic acids, phosphonic acids, phosphinic acids. Acyl means, for example, formyl, alkylcarbonyl such as (C ₁ -C ₄ alkyl) carbonyl,

Phenylcarbonyl, where the phenyl ring may be substituted, e.g. as shown above for phenyl, or alkyloxycarbonyl, phenyloxycarbonyl, benzyloxycarbonyl, alkylsulfonyl, alkylsulfinyl, N-alkyl-1-iminoalkyl and other residues of

organic acids.

The above examples of general terms such as alkyl, acyl, aryl, substituted radicals etc. are not a complete list; in particular, the terms also include meanings of the same type, which are given below for the preferred compounds.

The invention also relates to all stereoisomers which are encompassed by formula (I) and mixtures thereof. Such compounds of the formula (I) contain one or more asymmetric carbon atoms or else double bonds which are not indicated separately in the general formula (I). The possible stereoisomers defined by their specific spatial shape, such as enantiomers, diastereomers, Z and E isomers, are all encompassed by the formula (I) and can be obtained from mixtures of the stereoisomers by customary methods or else by stereoselective reactions in combination with the use of

stereochemically pure starting materials can be produced.

The compounds of formula (I) can form salts in which the hydrogen of the -SO ₂ -NH group is replaced by a cation suitable for agriculture. These salts are, for example, metal salts, in particular alkali metal salts or alkaline earth metal salts, in particular sodium and potassium salts, or also ammonium salts or salts with organic amines. Of particular interest are compounds of formula (I) according to the invention or their salts, in which

R ^{* is} a radical of the formula -CHO, -CH = NR or,

RH, OH, NH ₂ , (C ₁ -C ₆ ) alkyl, (C ₁ -C ₆ ) haloalkyl, (C ₁ -C ₆ ) alkoxy,

(C ₁ -C ₆ ) haloalkoxy, phenyl which is unsubstituted or substituted, or [(C ₁ -C ₃ ) alkyl] carbonyl, [(C ₁ -C ₃ ) alkoxylcarbonyl, aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, mono - or

Di - [(C ₁ -C ₆ ) alkyl] amino, [(C ₁ - _C3 ) alkyl] carbonylamino,

[(C ₁ -C ₃ ) alkoxy] carbonylamino, aminocarbonylamino,

Methylaminocarbonylamino, dimethylaminocarbonylamino, preferably H or (C ₁ -C ₄ ) alkyl,

X ^{1 is} an oxygen atom,

X ^{2 is} an oxygen atom and

R ', R "independently of one another are (C ₁ -C ₄ ) alkyl.

Of particular interest are compounds of formula (I) according to the invention, wherein

R ¹ OH, NR ⁴ R ⁵ , (C ₁ -C ₆ ) alkyl, (C ₂ -C ₆ ) alkenyl, (C ₂ -C ₆ ) alkynyl, (C ₁ -C ₆ ) alkoxy, (C ₂ -C ₆ ) alkenoxy, (C ₂ -C ₆ ) alkynoxy, (C ₃ -C ₇ ) cycloalkyl,

(C ₃ -C ₇ ) cycloalkoxy, (C ₃ -C ₇ ) cycloalkyl- (C ₁ -C ₂ ) alkyl, (C ₃ -C ₇ ) cycloalkyl (C ₁ -C ₄ ) alkoxy, phenoxy, phenyl, thienyl, Pyridyl, where each of the last-mentioned fifteen radicals is unsubstituted or by one or more radicals from the group halogen, (C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkyl, (C ₂ -C ₄ ) alkenoxy, (C ₂ -C ₄ ) haloalkenoxy, (C ₂ -C ₄ ) alkynoxy,

(C ₂ -C ₄ ) haloalkinoxy, CN, NO ₂ , N ₃ , SCN, OCN, OH, NR ⁶ R ⁷ , CO-R ⁸ , (C ₁ -C ₄ ) alkylthio, (C ₁ -C ₄ ) haloalkylthio , unsubstituted and substituted phenyl, SO-R ⁹ and SO ₂ R ¹⁰ as well as in the case of cyclic radicals

(C ₁ -C ₄ ) alkyl and (C ₁ -C ₄ ) haloalkyl is substituted,

R ² halogen, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₅ ) alkoxyalkyl, NO ₂ ,

NR ¹¹ R ¹² , CN, (C ₁ -C ₃ ) alkoxy or (C ₁ -C ₃ ) haloalkoxy, R ³ H, OH, (C ₁ -C ₃ ) alkyl, (C ₂ -C ₃ ) alkenyl, (C ₂ -C3) alkynyl or (C ₁ -C ₃ ) alkoxy, preferably H or (C ₁ -C ₄ ) Alkyl,

R ⁴ H, OH, NH ₂ , mono- and di - [(C ₁ -C ₃ ) alkyl] amino, (C ₁ -C ₄ ) alkyl,

(C ₂ -C ₄ ) alkenyl, (C ₂ -C ₄ ) alkynyl, (C ₁ -C ₄ ) alkoxy, (C ₂ -C ₄ ) alkenoxy,

(C ₂ -C ₄ ) alkynoxy, each of the eight last-mentioned radicals unsubstituted or by one or more radicals from the group halogen,

(C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkoxy, (C ₁ -C ₃ ) alkylthio and

(C ₁ -C ₃ ) haloalkylthio is substituted, and

R ⁵ H, (C ₁ -C ₄ ) alkyl, (C ₂ -C ₄ ) alkenyl, (C ₂ -C ₄ ) alkynyl, [(C ₁ -C ₄ ) alkyl] carbonyl, [(C ₂ -C ₄ ) alkenyl] carbonyl, [(C ₁ -C ₄ ) alkoxy] carbonyl,

- (C ₂ -C ₄ ) alkenoxy] carbonyl, [(C ₁ -C ₄ ) alkyl] aminocarbonyl,

Di [(C ₁ -C ₄ ) alkyl] amino-carbonyl, (C ₁ -C ₄ ) alkyl-sulfonyl,

(C ₂ -C ₄ ) alkenyl sulfonyl, (C ₁ -C ₄ ) alkylaminosulfonyl,

Di [(C ₁ -C ₄ ) alkyl] aminosulfonyl, each of the thirteen last-mentioned radicals unsubstituted or by one or more radicals from the group halogen, OH, (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkoxy , (C ₁ -C ₃ ) alkylthio and (C ₁ -C ₃ ) haloalkylthio is substituted,

or NR ⁴ R ⁵ together form a heterocyclic radical which, in addition to the N atom, contains further hetero units from the group O, N, S, SO or SO ₂ im

May contain ring structure and which is unsubstituted or by one or more radicals from the group oxofunction, halogen, OH, NH ₂ , NO ₂ , NHCH ₃ , N (CH ₃ ) ₂ , CN, CONH ₂ , CONHCH ₃ , CO-OCH ₃ , CON (CH ₃ ) ₂ , COCH ₃ , CO-H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) alkoxy and

(C ₁ -C ₃ ) haloalkoxy is substituted,

R ⁶ H, (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) haloalkyl, (C ₂ -C ₄ ) alkenyl, (C ₂ -C ₄ ) haloalkenyl, (C ₂ -C ₄ ) alkynyl, ( C ₂ -C ₄ ) haloalkynyl, OH, (C ₁ -C ₃ ) alkoxy or

(C ₂ -C ₃ ) haloalkoxy and

R ⁷ H, (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) haloalkyl, (C ₂ -C ₄ ) alkenyl, (C ₂ -C ₄ ) haloalkenyl, (C ₂ -C ₄ ) alkynyl, ( C ₂ -C ₄ ) haloalkynyl, CO-H, CO ₂ CH ₃ , CO-CH ₃ , CO-NH ₂ , CO-NHCH ₃ or CON (CH ₃ ) ₂ ,

or NR ⁶ R ⁷ together form a heterocyclic radical which, in addition to the N atom, contains further hetero units from the group O, N, S, SO or SO ₂ im May contain ring structure and which is unsubstituted or by one or more radicals from the group halogen, OH, NH ₂ , NO ₂ , CONHCH ₃ , CONH ₂ , NHCH ₃ , N (CH ₃ ) ₂ , CN, CO ₂ CH ₃ , CON ( CH ₃ ) ₂ , COCH ₃ , CO-H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkoxy and oxo function is

R ⁸ H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkoxy, (C ₁ -C ₃ ) alkylthio, ( C ₁ -C ₃ ) haloalkylthio, NH ₂ , NHCH ₃ , N (CH ₃ ) ₂ or OH,

R ⁹ (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) haloalkyl, (C ₂ -C ₅ ) alkoxyalkyl, (C ₂ -C ₄ ) alkenyl,

(C ₂ -C ₄ ) haloalkenyl, (C ₂ -C ₄ ) alkynyl or (C ₂ -C ₄ ) haloalkynyl,

R ¹⁰ (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) haloalkyl, (C ₂ -C ₄ ) alkenyl, (C ₂ -C ₅ ) haloalkyl,

(C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkoxy, (C ₂ -C ₄ ) alkenoxy,

(C ₂ -C ₄ ) haloalkenoxy, NH ₂ , mono- or di [(C ₁ -C ₄ ) alkyl] amino,

R ^{1 1} H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkoxy or OH and

R ¹² H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, CHO, COCH ₃ , CO ₂ CH ₃ , CO ₂ C ₂ H ₅ , SO ₂ CH ₃ or CN,

or NR ¹¹ R ¹² together form a heterocyclic radical which, in addition to the N atom, contains further hetero units from the group O, N, S, SO or SO ₂ im

May contain ring structure, and the unsubstituted or by one or more radicals from the group halogen, OH, NH ₂ , NO ₂ , NHCH ₃ , N (CH ₃ ) ₂ , CN, CONHCH ₃ , CO ₂ CH ₃ , COCH ₃ , CON (CH ₃ ) ₂ , CO-H, (C ₁ -C ₃ ) alkyl, CONH ₂ , (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) haloalkoxy and

Oxo function is substituted,

X, Y independently of one another H, halogen, (C ₁ -C ₆ ) alkyl, (C ₁ -C ₆ ) alkoxy,

(C ₁ -C ₆ ) alkylthio, (C ₃ -C ₇ ) cycloalkyl, (C ₂ -C ₆ ) alkenyl, (C ₂ -C ₆ ) alkynyl, (C ₂ -C ₆ ) alkynyloxy, mono- or di ( C ₁ -C ₄ alkyl) amino, each of the nine latter radicals being unsubstituted or by one or more radicals from the group halogen, (C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkoxy,

(C ₁ -C ₄ ) alkylthio and (C ₁ -C ₄ ) haloalkylthio is substituted, and

Z CH or N,

mean. Preferred compounds of the formula (I) and their salts are those in which

R ¹ (C ₁ -C ₄ ) alkyl, (C ₂ -C ₄ ) alkenyl, (C ₂ -C ₄ ) alkynyl, (C ₁ -C ₄ ) alkoxy, each of the latter 4 radicals being unsubstituted or by one or more Radicals from the group halogen, (C ₁ -C ₄ ) alkoxy and (C ₁ -C ₄ ) alkylthio, or (C ₃ -C ₆ ) cycloalkyl, benzyl, phenyl, thienyl, pyridyl, each of the latter 5 radicals unsubstituted or by one or more radicals from the group halogen, (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkyl, (C ₁ -C ₄ ) haloalkoxy, CN, NO ₂ and OH is substituted, or NH ₂ , mono- or di [(C ₁ -C ₄ ) alkyl] amino and

n is 0, 1 or 2.

Also preferred are compounds of the formula (I) and their salts according to the invention, in which R ^{2 is} (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy or halogen and m is 0, 1, 2 or 3, preferably 0 or 1 mean.

Also preferred are compounds of the formula (I) and their salts according to the invention, in which one of the radicals X and Y is halogen, (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkyl, (C ₁ -C ₄ ) haloalkoxy, mono- or di - [(C ₁ -C ₄ ) alkyl] amino and the other of the radicals X and Y (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) Alkoxy or (C ₁ -C ₄ ) haloalkoxy mean.

Compounds (I) and their salts according to the invention are also preferred, in which the group of the formula S (O) _n -R ^{1 is} in the 2-position and the group R ^* NH in the 5-position to the sulfonylurea radical.

The present invention further provides processes for the preparation of the compounds of the formula (I) according to the invention or their salts, characterized in that a) a compound of formula (II)

with a heterocyclic carbamate of the formula (III),

wherein R ^{** means} unsubstituted or substituted phenyl or (C ₁ -C ₄ ) alkyl, or

b) a sulfochloride of the formula (IV)

with a heterocyclic amine of the formula (V),

in the presence of a cyanate, for example an alkali metal cyanate such as sodium or potassium cyanate, or c) a sulfonamide of the formula (II) (see a) in succession with a

Aryl chloroformate of the formula (VI),

Ar-O-CO-CI (VI) in which Ar is an unsubstituted or substituted aryl radical and is reacted with a heterocyclic amine of the formula (V) (see b), or

d) a sulfonylurea of the formula (VII)

Analogously known methods for the compound of formula (I), wherein

R ^* = CHO is formylated and in the case of R ^* = CH = NR or

R ^* = CH (X ¹ R ') (X ² R ") derivatizes the obtained formyl compound to the formyl equivalent of the formula (I) or

e) a sulfonamide of the formula (II) (see variant a) with a (thio) isocyanate of the formula (VIII)

in the presence of a suitable base,

where in the above formulas (II) to (VIII) the radicals R ¹ , R ² , R ³ , R ^* , W, X, Y and Z and the indices m and n are as defined in formula (I) and in the Variants a) to c) are first obtained compounds of formula (I) with W = O. The reaction of the compounds of formulas (II) and (III) is preferably base-catalyzed in inert solvents, such as dichloromethane, acetonitrile, dioxane, dimethylformamide (DMF), dimethyl acetic acid amide or tetrahydrofuran (THF), at temperatures from -10 ° C to the boiling point of each

Solvent. The bases used are, for example, organic amine bases such as 1,8-diazabicyclo [5.4.0] undec-7-ene (DBU), triethylamine or else

Hydroxides, such as sodium or potassium hydroxide, or alcoholates, such as sodium ethylate, potassium tert-butoxide or sodium phenolate, or carbonates, such as sodium or potassium carbonate, especially in the case of R ^** = (subst.) Phenyl (cf. eg EP-A-44807), or trimethyl or triethyl aluminum, the latter in particular in the case of R ^** = alkyl (cf. EP-A-155516).

The sulfonamides of the formula (II) can be obtained, for example, in the following ways; see. Scheme 1, example for the preparation of compound (Ila) = (II) with R ^* = CHO:

The reaction of the sulfonic acids (IX) or their alkali salts with a

Chlorinating agents - such as PCI ₃ , POCI ₃ or SOCI ₂ - lead to the sulfochloride of the formula (X). This reaction takes place in bulk or in inert solvents such as dichloromethane, sulfolane, acetonitrile or in a solvent mixture of inert components. The subsequent reaction with ammonia or

tert-Butylamine leads to the sulfonamides of the formula (XI) with R = H or

tert-butyl. These compounds can be converted into the corresponding mercaptans of the formula (XII) (n = 0) using mercaptans in solvents, such as, for example, dimethylformamide, N, N-dimethylacetic acid amide or N-methylpyrrolidinone, in the presence of suitable bases, such as, for example, sodium or potassium carbonate . By choosing suitable oxidizing agents (eg potassium peroxomonosulfate, ^® Oxone) and reaction conditions, the corresponding compounds of the

Prepare formula (XII) with n = 1 and 2 analogously to known methods.

After reduction of the nitro group from the compounds of formula (XII), e.g. with iron in acetic acid medium or other common methods (e.g.

Hydrogenation with Pd-C / hydrogen), the aniline of formula (XIII) is obtained. This connection is analogous to methods known from the literature, for example

Formic acid and acetic anhydride formylated to the compounds of formula (IIa) or (XIV). In the case of R = tert-butyl, the tert-butyl group is split off from the aromatics of the formula (XIV) by reaction with strong acids to give the sulfonamides of the formula (IIIa). Examples of possible strong acids are mineral acid, such as H ₂ SO ₄ or HCl, or strong organic acids, such as CF ₃ COOH.

Derivatization of the compounds (Ila) on the formyl group to form other groups, such as those found in formula (I), can be carried out analogously at this stage

Procedure.

Those required for the implementation of the compounds (II) according to variant a)

Carbamates of the formula (III) are known from the literature or can be prepared analogously to known processes (cf. EP-A-70804 or US-A-4,480,101).

For compounds of formula (I) with n = 2 and R ¹ = nitrogen or

As an alternative to Scheme 1, a different synthetic route is recommended. Compounds of the formula (XII) with n = 0 and, for example, R ¹ = benzyl are converted into the corresponding sulfochlorides of the formula (XV) by oxidative chlorination with chlorine or hypochlorite. The nitroaromatics of the formula (XII) can be obtained by reacting alcoholates, phenolates or amines with the sulfochloride of the formula (XV) (n = 2, R ¹ = O-R ',

R ¹ = NR "R '"). The further synthesis sequence to the corresponding

Sulfonylureas of the formula (I) (n = 2, R ¹ = OR ', R ¹ = NR "R"") can be carried out analogously to the transformation described above for compound (XII) → compound (I) (cf. Scheme 2).

The sulfonylureas of the formula (I) with R ^* = CHO can alternatively be reacted by reacting a formylation reagent with the sulfonylurea

Prepare formula (VII).

For this purpose, the compounds of formula (VII) at temperatures between -10 ° C and 70 ° C, preferably 0 to 40 ° C in an inert solvent such as e.g. Dichloromethane, trichloromethane, dimethylformamide or

N, N-dimethylacetic acid amide submitted and with a suitable

Formylating agents, e.g. the mixed anhydride from ant and

Acetic acid added. Compounds of formula (VII) are known from the literature

(EP-A-23141, US-A-4,369,058) or can be prepared in an analogous manner to the processes described there.

The reactions of sulfonamides of the formula (II) with

Aryl chloroformates (VI) and heterocyclic amines of the formula (V) also lead to the compounds of the formula (I). First, the sulfonamides of the formula (Ila) and chloroformic acid aryiester (e.g. Ar =

Phenyl) the corresponding sulfonyl carbamates of the formula (XVI)

in the presence of a suitable base, such as triethylamine or potassium carbonate. These sulfonyl carbamates of the formula (XVI) can then be reacted with heterocyclic amines (V) to give the sulfonylureas (I)

(see US-A-4,994,571). The reaction of the sulfochlorides (IV) with the amino heterocycles of the formula (V) and cyanates such as sodium cyanate and potassium cyanate takes place, for example, in aprotic solvents, such as, for example, acetonitrile, sulfolane, N-methylpyrrolidone,

Dimethylformamide, pyridine, picoline or lutidine or a mixture of the solvents mentioned, at temperatures between -10 ° C and 100 ° C, preferably between 0 ° and 50 ° C (see. US-A-5,157,119).

The (thio) isocyanates of the formula (VIII) can be obtained by processes known from the literature (EP-A-232067, EP-A-166516). The reaction of the (thio) isocyanates (VIII) with compounds (II) takes place at -10 ° C. to 100 ° C., preferably 20 to 100 ° C., in an inert aprotic solvent, such as acetone or acetonitrile, in the presence of a suitable one Base, for example N (C ₂ H ₅ ) ₃ or K ₂ CO ₃ .

The salts of the compounds of formula (I) are preferably in inert polar solvents such as e.g. Water, methanol, acetone, dichloromethane, tetrahydrofuran, in individual cases also in non-polar solvents such as toluene or heptane, at temperatures from 0 to 100 ° C. Suitable bases for the preparation of the salts according to the invention are, for example

Alkali carbonates, such as potassium carbonate, alkali and alkaline earth metal hydroxides, for example NaOH, KOH or Ca (OH) ₂ , ammonia or a suitable amine base from the group of primary, secondary and tertiary amines, such as triethylamine or

Ethanolamine. Suitable acids for salt formation are, for example, HCl, HBr, H ₂ SO ₄ or HNO ₃ .

The intermediates of formulas (II), (IV), (XIV) and (XVI) are new and also the subject of the present invention; they match together

Compounds of the general formula (XVII)

wherein U ^* denotes NH ₂ , Cl, mono- or disubstituted amino, such as alkylamino, in particular t-butylamino, or aryloxycarbonylamino, and R ^* , R ¹ , R ² , n and m are as defined in formula (I).

With the "inert" designated in the above process variants

Solvents "mean solvents which are inert under the respective reaction conditions, but not under any

Reaction conditions must be inert.

In the following, the term “compounds of the formula (I) according to the invention” also refers to salts of the compounds of the formula (I).

The compounds of formula (I) according to the invention have excellent herbicidal activity against a broad spectrum of economically important mono- and dicotyledonous harmful plants. Even difficult to fight

perennial weeds that sprout from rhizomes, rhizomes or other permanent organs are well captured by the active ingredients. It does not matter whether the substances are pre-seeded, pre-emergence or

Post-emergence procedures are applied.

Some representatives of mono- and dicotyledons are examples

Weed flora called by the compounds of the invention

can be checked without being restricted to certain species by the naming.

On the side of the monocot weed species, e.g. Avena, Lolium, Alopecurus, Phalaris, Echinochloa, Digitaria, Setaria as well as Cyperus species from the annual group and on the part of the perennial species Agropyron,

Cynodon, Imperata as well as sorghum and perennial Cyperus species well recorded. In the case of dicotyledon weed species, the spectrum of action extends to species such as Galium, Viola, Veronica, Lamium, Stellaria, Amaranthus, Sinapis, Ipomoea, Matricaria, Abutilon and Sida on the annual side as well as Convolvulus, Cirsium, Rumex and Artemisia for the perennial weeds.

Weeds occurring in rice under the specific crop conditions, e.g. Sagittaria, Alisma, Eleocharis, Scirpus and Cyperus are also superbly controlled by the active compounds according to the invention.

Are the compounds of the invention prior to germination on the

Applied to the earth's surface, either weed seedlings are completely prevented from growing or the weeds grow up to the cotyledon stage, but then stop growing and finally die completely after three to four weeks.

When applying the active ingredients to the green parts of the plant in

Post-emergence also occurs very rapidly after the treatment and the weed plants remain in the growth stage at the time of application or die completely after a certain time, so that one for the

Crops harmful weed competition is eliminated very early and sustainably.

Although the compounds of the invention have excellent herbicidal activity against mono- and dicotyledon weeds, they will

Cultivated plants of economically important crops such as Wheat, barley, rye, rice, corn, sugar beet, cotton and soy are only slightly or not at all damaged. The present compounds are suitable from these

Reasons very well for selective control of undesirable

Plant growth in agricultural crops. In addition, the substances according to the invention have excellent growth-regulating properties in crop plants. They intervene regulating the plant's own metabolism and can therefore be used to influence plant constituents in a targeted manner and to facilitate harvesting, for example by triggering desiccation and stunted growth. Furthermore, they are also suitable for general control and

Inhibiting unwanted vegetative growth without killing the plants. Inhibiting vegetative growth plays a major role in many mono- and dicotyledon crops, as this can reduce or completely prevent storage.

The compounds according to the invention can be used in the form of wettable powders, emulsifiable concentrates, sprayable solutions, dusts or granules in the customary formulations. The invention therefore also relates to herbicidal and plant growth-regulating compositions which comprise compounds of the formula (I).

The compounds of formula (I) can be formulated in different ways, depending on which biological and / or chemical-physical parameters are specified. Possible formulation options are, for example: wettable powder (WP), water-soluble powder (SP), water-soluble powder

Concentrates, emulsifiable concentrates (EC), emulsions (EW), such as oil-in-water and water-in-oil emulsions, sprayable solutions,

Suspension concentrates (SC), dispersions based on oil or water,

Oil-miscible solutions, capsule suspensions (CS), dusts (DP), mordants, granules for sprinkling and soil application, granules (GR) in the form of micro, spray, elevator and adsorption granules, water-dispersible granules (WG), water-soluble granules ( SG), ULV formulations,

Microcapsules and waxes. These individual formulation types are known in principle and are described, for example, in: Winnacker-Küchler, "Chemical Technology", Volume 7, C. Hauser Verlag Munich, 4th Edition 1986, Wade van Valkenburg, "Pesticide Formulations", Marcel Dekker, NY , 1973; K. Martens, "Spray Drying" Handbook, 3rd Ed. 1979, G. Goodwin Ltd. London.

The necessary formulation aids such as inert materials, surfactants,

Solvents and other additives are also known and are described, for example, in: Watkins, "Handbook of Insecticide Dust Diluents and Carriers", 2nd Ed., Darland Books, Caldwell N.J., H.v. Olphen, "Introduction to Clay Colloid Chemistry"; 2nd Ed., J. Wiley & Sons, N.Y .; C. Marsden, "Solvent Guide"; 2nd Ed., Interscience, N.Y. 1963; McCutcheon's "Detergents and Emulsifiers Annual", MC Publ. Corp., Ridgewood N.J .; Sisley and Wood, "Encyclopedia of Surface Active Agents", Chem. Publ. Co. Inc., N.Y. 1964; Schönfeldt, "Interface-active ethylene oxide adducts", Wiss. Publishing company, Stuttgart 1976; Winnacker-Küchler, "Chemical Technology", Volume 7,

C. Hauser Verlag Munich, 4th edition 1986.

Based on these formulations, combinations with other pesticidally active substances, e.g. Insecticides, acaricides,

Herbicides, fungicides, as well as with safeners, fertilizers and / or

Create growth regulators, e.g. in the form of a finished formulation or as a tank mix.

Spray powders are preparations which are uniformly dispersible in water and which, in addition to the active substance, contain not only a diluent or inert substance, but also ionic and / or nonionic surfactants (wetting agents, dispersing agents), e.g. polyoxyethylated alkylphenols, polyoxethylated fatty alcohols, polyoxethylated fatty amines,

Fatty alcohol polyglycol ether sulfates, alkane sulfonates, alkylbenzenesulfonates, sodium lignosulfonate, 2,2'-dinaphthylmethane-6,6'-disulfonic acid sodium, dibutylnaphthalene sulfonic acid sodium or also oleoylmethyl tauric acid sodium. To make the wettable powders, the herbicides are used Active ingredients, for example in conventional equipment such as hammer mills,

Blower mills and air jet mills are finely ground and mixed simultaneously or subsequently with the formulation auxiliaries.

Emulsifiable concentrates are made by dissolving the active ingredient in an organic solvent e.g. Butanol, cyclohexanone, dimethylformamide, xylene or higher-boiling aromatics or hydrocarbons or mixtures of the organic solvents with the addition of one or more surfactants of ionic and / or nonionic type (emulsifiers). The following can be used as emulsifiers:

Alkylarylsulfonic acid calcium salts such as calcium dodecylbenzenesulfonate or nonionic emulsifiers such as fatty acid polyglycol esters,

Alkylaryl polyglycol ether, fatty alcohol polyglycol ether, propylene oxide-ethylene oxide condensation products, alkyl polyether, sorbitan esters such as e.g.

Sorbitan fatty acid esters or polyoxethylene sorbitan esters such as e.g.

Polyoxyethylene sorbitan fatty acid esters.

Dusts are obtained by grinding the active ingredient with finely divided solid substances, e.g. Talc, natural clays such as kaolin, bentonite and pyrophyllite, or diatomaceous earth.

Suspension concentrates can be water or oil based. You can, for example, by wet grinding using commercially available bead mills and optionally adding surfactants, such as those e.g. upstairs with the others

Formulation types already listed can be produced.

Emulsions, for example oil-in-water emulsions (EW), can be prepared, for example, by means of stirrers, colloid mills and / or static mixers using aqueous organic solvents and optionally surfactants, such as those already listed above for the other types of formulation. Granules can either by spraying the active ingredient

adsorbable, granulated inert material or by applying active ingredient concentrates by means of adhesives, e.g.

Polyvinyl alcohol, polyacrylic acid sodium or mineral oils on which

Surface of carriers such as sand, kaolinite or granulated

Inert material. Suitable active ingredients can also be granulated in the manner customary for the production of fertilizer granules, if desired in a mixture with fertilizers.

Water-dispersible granules are usually made according to the usual

Processes such as spray drying, fluidized bed granulation, plate granulation, mixing with high-speed mixers and extrusion without solid

Made of inert material.

For the production of plate, fluidized bed, extruder and spray granules, see e.g. Procedure in "Spray-Drying Handbook" 3rd ed. 1979, G. Goodwin Ltd., London; J.E. Browning, "Agglomeration", Chemical and Engineering 1967, pages

147 ff; "Perry's Chemical Engineer's Handbook," 5th Ed., McGraw-Hill, New York 1973, pp. 8-57.

For more details on the formulation of crop protection products see e.g. G.C. Klingman, "Weed Control as a Science," John Wiley and Sons, Inc., New York, 1961, pages 81-96, and J.D. Freyer, S.A. Evans, "Weed Control

Handbook ", 5th Ed., Blackwell Scientific Publications, Oxford, 1968,

Pages 101-103.

The agrochemical preparations generally contain 0.1 to 99% by weight, in particular 0.1 to 95% by weight, of active ingredient of the formula (I).

The active ingredient concentration in wettable powders is, for example, about 10 to 90% by weight, the remainder to 100% by weight consists of customary formulation components. In the case of emulsifiable concentrates, the active substance concentration can be about 1 to 90, preferably 5 to 80,% by weight. Dust-like formulations contain 1 to 30% by weight of active compound, preferably mostly 5 to 20% by weight of active ingredient, sprayable solutions contain about 0.05 to 80, preferably 2 to 50% by weight of active ingredient. In the case of water-dispersible granules, the active ingredient content depends in part on whether the active compound is in liquid or solid form and which granulating aids, fillers, etc. are used. The active ingredient content of the water-dispersible granules is, for example, between 1 and 95% by weight, preferably between 10 and 80% by weight.

In addition, the active ingredient formulations mentioned may contain the usual adhesive, wetting, dispersing, emulsifying, penetrating,

Preservatives, antifreeze and solvents, fillers, carriers and dyes, defoamers, evaporation inhibitors and agents that influence pH and viscosity.

As a combination partner for the active substances according to the invention in

Mixture formulations or in the tank mix can be used, for example, known active ingredients, such as those found in e.g. from Weed Research 26, 441-445 (1986), or "The Pesticide Manual", 9th edition, The British Crop Protection Council, 1990/91, Bracknell, England, and the literature cited therein. Herbicides known from the literature which can be combined with the compounds of the formula (I) are, for example The following active substances are to be named (note: the compounds are either identified with the "common name" according to the International Organization for Standardization (ISO) or with the chemical name, if necessary together with a common code number):

acetochlor; acifluorfen; aclonifen; AKH 7088, i.e. [[[1- [5- [2-chloro-4- (trifluoromethyl) phenoxy] -2-nitrophenyl] -2-methoxyethylidenes] amino] oxy] acetic acid and methyl acetate; alachlor; alloxydim; ametryn;

amidosulfuron; amitrole; AMS, i.e. Ammonium sulfamate; anilofos; asulam;

atrazine; azimsulfurone (DPX-A8947); aziprotryn; barban; BAS 516 H, i.e.

5-fluoro-2-phenyl-4H-3,1-benzoxazin-4-one; benazolin; benfluralin; benfuresate; bensulfuron-methyl; bensulide; bentazone; benzofenap; benzofluor; benzoyl-prop-ethyl; benzthiazuron; bialaphos; bifenox; bromacil; bromobutide; bromofenoxim; bromoxynil; bromuron; buminafos; busoxinone; butachlor;

butamifos; butenachlor; buthidazole; butralin; butylates; cafenstrole (CH-900); carbetamide; cafentrazone (ICI-A0051); CDAA, i.e. 2-chloro-N, N-di-2-propenylacetamide; CDEC, i.e. 2-chloroallyl ester of diethyldithiocarbamic acid; chlomethoxyfen; chloramben; chlorazifop-butyl, chloromesulone (ICI-A0051);

chlorbromuron; chlorobufam; chlorfenac; chlorflurecol-methyl; chloridazon;

chlorimuron ethyl; Chlorine nitrofen; chlorotoluron; chloroxuron; chlorpropham;

chlorsulfuron; chlororthal dimethyl; chlorothiamide; cinmethylin; cinosulfuron;

clethodim; clodinafop and its ester derivatives (e.g. clodinafop-propargyl);

clomazone; clomeprop; cloproxydim; clopyralid; cumyluron (JC 940); cyanazine; cycloate; cyclosulfamuron (AC 104); cycloxydim; cycluron; cyhalofop and its ester derivatives (e.g. butyl ester, DEH-112); cyperquat; cyprazine;

cyprazole; daimuron; 2,4-DB; dalapon; desmedipham; desmetryn; di-allate;

dicamba; dichlobenil; dichlorprop; diclofop and its esters such as

diclofop-methyl; diethatyl; difenoxuron; difenzoquat; diflufenican; dimefuron; dimethachlor; dimethametryn; dimethenamid (SAN-582H); dimethazone, clomazone; dimethipin; dimetrasulfuron, dinitramine; dinoseb; dinoterb;

diphenamide; dipropetryn; diqυat; dithiopyr; diuron; DNOC; eglinazine-ethyl;

EL 177, i.e. 5-cyano-1- (1, 1-dimethylethyl) -N-methyl-1H-pyrazole-4-carboxamide; endothal; EPTC; esprocarb; ethalfluralin; ethametsulfuron-methyl; ethidimuron; ethiozin; ethofumesate; F5231, i.e. N- [2-chloro-4-fluoro-5- [4- (3-fluoropropyl) -4,5-dihydro-5-oxo-1 H-tetrazol-1-yl] phenyl] ethanesulfonamide; ethoxyfen and its esters (e.g. ethyl ester, HN-252); etobenzanide (HW 52); fenoprop; fenoxan, fenoxaprop and fenoxaprop-P and their esters, e.g. fenoxaprop-P-ethyl and fenoxaprop-ethyl; fenoxydim; fenuron; flamprop-methyl; flazasulfuron; fluazifop and fluazifop-P and their esters, e.g. fluazifop-butyl and fluazifop-P-butyl;

fluchloralin; flumetsulam; flumeturon; flumiclorac and its esters (e.g.

Pentyl ester, S-23031); flumioxazin (S-482); flumipropyn; flupoxam (KNW-739); fluorodifen; fluoroglycofen-ethyl; flupropacil (UBIC-4243); fluridone;

flurochloridone; fluroxypyr; flurtamone; fomesafen; fosamine; furyloxyfen;

glufosinate; giyphosate; halosates; halosulfuron and its esters (e.g.

Methyl ester, NC-319); haloxyfop and its esters; haloxyfop-P (= R-haloxyfop) and its ester; hexazinone; imazamethabenz-methyl;

imazapyr; imazaquin and salts such as the ammonium salt; imazethamethapyr; imazethapyr; imazosulfuron; ioxynil; isocarbamide; isopropaline; isoproturon;

isouron; isoxaben; isoxapyrifop; carbutilates; lactofen; lenacil; linuron; MCPA; MCPB; mecoprop; mefenacet; mefluidide; metamitron; metazachlor;

methabenzthiazuron; metham; methazole; methoxyphenone; methyldymron; metabenzuron, methobenzuron; metobromuron; metolachlor; metosulam

(XRD 511); metoxuron; metribuzin; metsulfuron-methyl; MH; molinate;

monalide; monocarbamide dihydrogen sulfates; monolinuron; monuron; MT 128, i.e. 6-chloro-N- (3-chloro-2-propenyl) -5-methyl-N-phenyl-3-pyridazinamine;

MT 5950, i.e. N- [3-chloro-4- (1-methylethyl) phenyl] -2-methylpentanamide;

naproanilide; napropamide; naptalam; NC 310, i.e. 4- (2,4-dichlorobenzoyl) -1-methyl-5-benzyloxypyrazole; neburon; nicosulfuron; nipyraclophen; nitraline;

nitrofen; nitrofluorfen; norflurazon; orbencarb; oryzalin; oxadiargyl (RP-020630); oxadiazon; oxyfluorfen; paraquat; pebulate; pendimethalin; perfluidone;

phenisopham; phenmedipham; picloram; piperophos; piributicarb; pirifenopbutyl; pretilachlor; primisulfuron-methyl; procyazine; prodiamine; profluralin; proglinazine-ethyl; prometon; prometryn; propachlor; propanil; propaquizafop and its esters; propazine; propham; propisochlor; propyzamide; prosulfalin; prosulfocarb; prosulfuron (CGA-152005); prynachlor; pyrazolinates; pyrazone; pyrazosulfuron-ethyl; pyrazoxyfen; pyridate; pyrithiobac (KIH-2031); pyroxofop and its esters (e.g. propargyl esters); quinclorac; quinmerac; quinofop and its ester derivatives, quizalofop and quizalofop-P and their ester derivatives e.g. quizalofop-ethyl; quizalofop-P-tefuryl and ethyl; renriduron; rimsulfuron

(DPX-E-9636); S 275, i.e. 2- [4-chloro-2-fluoro-5- (2-propynyloxy) phenyl] -4,5,6,7-tetrahydro-2H-indazole; secbumeton; sethoxydim; siduron; simazine; simetryn; SN 106279, i.e. 2 - [[7- [2-chloro-4- (trifluoromethyl) phenoxyl-2-naphthalenyl] oxyl propanoic acid and methyl ester; sulfentrazone (FMC-97285, F-6285);

sulfazuron; sulfometuron-methyl; sulfosate (ICI-A0224); TCA; tebutam

(GCP-5544); tebuthiuron; terbacil; terbucarb; terbuchlor; terbumeton;

terbuthylazine; terbutryn; TFH 450, ie N, N-diethyl-3 - [(2-ethyl-6-methylphenyl) sulfonyl] -1H-1, 2,4-triazole-1-carboxamide; thenylchlor (NSK-850); thiazafluron; thizopyr (Mon-13200); thidiazimin (SN-124085);

thifensulfuron-methyl; thiobencarb; tiocarbazil; tralkoxydim; tri-allate;

triasulfuron; triazofenamide; tribenuron-methyl; triclopyr; tridiphane; trietazine; trifluralin; triflusulfuron and esters (e.g. methyl ester, DPX-66037); trimeturon; tsitodef; vernolate; WL 110547, i.e. 5-phenoxy-1- [3- (trifluoromethyl) phenyl] -1H-tetrazole; UBH-509; D-489; LS 82-556; KPP-300; NC-324; NC-330; KH-218; DPX-N8189; SC-0774; DOWCO-535; DK-8910; V-53482; PP-600; MBH-001; KIH-9201; ET-751; KIH-6127 and KIH-2023.

Those available in the commercial form are used

Formulations optionally diluted in the usual way e.g. for wettable powders, emulsifiable concentrates, dispersions and water-dispersible

Granules using water. Dust-like preparations, soil or

Scatter granules and sprayable solutions are usually no longer diluted with other inert substances before use.

With the external conditions such as temperature, humidity, the type of herbicide used, etc. the required application rate varies

Compounds of formula (I). It can fluctuate within wide limits, e.g. between 0.001 and 10.0 kg / ha or more of active substance, but it is preferably between 0.005 and 5 kg / ha.

Chemical examples a) N-tert-butyl-2-chloro-5-nitrobenzenesulfonamide

165 g of dried 2-chloro-5-nitrobenzenesulfonic acid sodium salt (90%) are placed in 264 ml of acetonitrile, 264 ml of sulfolane and 16.5 ml of dimethylformamide (DMF). After the dropwise addition of 198 ml of phosphorus oxychloride, the mixture is heated to boiling for 2 hours. After the mixture has cooled, it is poured into cold water, extracted with ethyl acetate, the combined organic phases are dried over sodium sulfate and concentrated. The residue (mixture of sulfolane and 2-chloro-5-nitrobenzenesulfochloride) is taken up in 1500 ml dichloromethane, mixed with 130 ml tert-butylamine (ice bath cooling) and stirred for about 2 hours at room temperature. After washing with dilute hydrochloric acid and drying over MgSO ₄ , the organic phase is concentrated. The residue is stirred with methanol and cooled to 0 ° C. The separated solid (109 g, mp. 168 to 171 ° C) is separated and dried. A second fraction of the product of comparable quality (46.7 g) can be obtained analogously from the mother liquor. b) N-tert-butyl-2-ethylmercapto-5-nitrobenzenesulfonamide

5.6 ml of ethyl mercaptan are added at room temperature to a suspension of 20.0 g of N-tert-butyl-2-chloro-5-nitrobenzenesulfonamide, 18.9 g of potassium carbonate and 100 ml of DMF. After 3 hours of stirring, the mixture in

High vacuum concentrated. The residue is taken up in water and concentrated with. Acidified hydrochloric acid (pH 1 to 2). The aqueous phase is with

Extracted ethyl acetate. The combined organic phases are dried over magnesium sulfate and then concentrated under reduced pressure. This gives 21, 25 g of the desired ethyl mercaptan;

Melting point: 172 to 174 ° C. c) 5-Amino-2-ethylmercapto-N-tert-butylbenzenesulfonamide

A mixture of 12 g of N-tert-butyl-2-ethylmercapto-5-nitrobenzenesulfonamide, 17.7 g of ammonium chloride, 50 ml of water and 200 ml of ethanol

13.3 g of zinc powder are added in portions and the mixture is stirred at 70 ° C. for 10 hours. After filtering off the solid and washing out with ethyl acetate, the filtrate is concentrated under reduced pressure. The residue from the filtrate is taken up in ethyl acetate and washed with water. After drying over magnesium sulfate, the organic phase is concentrated. 9.4 g of the desired aniline are thus obtained;

1H-NMR (80 MHz, D ⁶ -DMSO): δ ppm = 1.10 (s, 9H, C (CH ₃ ) ₃ ); 1.15 (t, 2H, CH ₂ CH ₃ ); 2.85 (q, 2H, CH ₂ CH ₃ ); 5.60 (s, 2H, NH _2); 6.60 (s, 1H, NH); 6.70 (dd, 1H, 4-H); 7.20 (d, 1H, 6-H); 7.30 (d, 1H, 3-H). d) N-tert-butyl-2-ethylmercapto-5-formylaminobenzenesulfonamide

1.1 ml of formic acid are added dropwise to 2.5 ml of acetic anhydride. After heating at 50 ° C. for 1 hour, the solution is cooled to room temperature and 3.0 g of 5-amino-2-ethylmercapto-N-tert-butyl-benzenesulfonamide, dissolved in 10 ml of DMF, are added. After stirring for 1 hour at 50 ° C

The reaction mixture was concentrated in a high vacuum. The backlog is in

Ethyl acetate was added and washed with dilute hydrochloric acid and water. After drying over magnesium sulfate, the organic phase is concentrated. This gives 3.13 g of the desired formylaniline derivative, which can be used for further reactions without further purification. e) 2-Ethylmercapto-5-formylaminobenzenesulfonamide

3.13 g of N-tert-butyl-2-ethylmercapto-5-formylamino-benzenesulfonamide are stirred in 20 ml of trifluoroacetic acid at room temperature. After the reaction has ended, volatile components are distilled off in a high vacuum. This gives 3.20 g of a solid, one for further reactions

has sufficient degree of purity; Melting point: 127 ° C. f) N - [(4,6-Dimethoxypyrimidin-2-yl) aminocarbonyl] -2-ethylmercapto-5-formylaminobenzenesulfonamide (Table 1, Example 1-26)

3.4 ml of DBU are added dropwise at 0 ° C. to a suspension of 3.0 g of 2-ethylmercapto-5-formylaminobenzenesulfonamide and 4.6 g of 4,6-dimethoxy-2-phenoxycarbonylaminopyrimidine in 30 ml of acetonitrile. After the reaction is over

Acetonitrile is distilled off, the residue is taken up in water and washed with diethyl ether. After acidifying the aqueous phase with

Concentrated hydrochloric acid (pH = 1 to 2) becomes the precipitated solid separated and washed with diisopropyl ether. This gives 1.13 g of the desired sulfonylurea, which is one for biological experiments

has sufficient purity; Melting point: 185 to 187 ° C (with decomp.). g) N-tert-butyl-2-ethylsulfonyl-5-nitrobenzenesulfonamide

A solution of 180 g of oxone (potassium peroxomonosulfate) in 600 ml of water is added dropwise to a solution of 60.0 g of N-tert-butyl-2-ethylmercapto-5-nitrobenzenesulfonamide in 900 ml of methanol at a temperature of 65 ° C. After stirring for 5 hours at this temperature, this is cooled

Reaction mixture, poured onto water and extracted with ethyl acetate. The combined organic phases are washed with water, dried over magnesium sulfate and then concentrated. This gives 60.6 g of the ethyl sulfone; Melting point: 108 to 111 ° C. h) 5-Amino-N-tert-butyl-2-ethylsulfonylbenzenesulfonamide

A mixture of 40 g of N-tert-butyl-2-ethylsulfonyl-5-nitrobenzenesulfonamide is dissolved in 1500 ml of methanol, mixed with 0.5 g of palladium-carbon (10%) and stirred under a hydrogen atmosphere (1 atm). After finished

Hydrogen uptake, the catalyst is separated off and the solution

constricted. This gives 32.9 g of the aniline derivative;

Melting point: 193 to 195 ° C. i) N-tert-butyl-2-ethylsulfonyl-5-formylaminobenzenesulfonamide

0.82 ml of formic acid are added dropwise to 1.85 ml of acetic anhydride. To

A solution of 2.5 g of 5-amino-N-tert-butyl-2-ethylsulfonylbenzenesulfonamide in 10 ml of DMF is added dropwise at room temperature for 2 hours at room temperature. This mixture is first stirred at 50 ° C. for 3 hours and then concentrated in a high vacuum. The residue is taken up in water and extracted with ethyl acetate. After drying the organic phase The solvent is distilled off over magnesium sulfate. The residue (3.0 g) contains the desired product and is suitable for further reactions

sufficient purity. j) 2-ethylsulfonyl-5-formylaminobenzenesulfonamide

3.0 g of N-tert-butyl-2-ethylsulfonyl-5-formylaminobenzenesulfonamide are stirred in 20 ml of trifluoroacetic acid. When the reaction is complete, the

Trifluoroacetic acid distilled off. The backlog is left with little

Ethyl acetate stirred. After separating and drying the

Solid, 1.65 g of the desired sulfonamide are obtained; Melting point: 186 to 189 ° C. k) N - [(4,6-Dimethoxypyrimidin-2-yl) aminocarbonyl] -2-ethylsulfonyl-5-formylaminobenzenesulfonamide (Table 3, Example 3-26)

To a suspension of 1, 30 g of 2-ethylsulfonyl-5-formylaminobenzenesulfonamide and 1, 50 g of 4,6-dimethoxy-2-phenoxycarbonylaminopyrimidine in 40 ml

Acetonitrile 0.86 ml DBU are added dropwise. The mixture is then stirred at room temperature. After the reaction has ended, acetonitrile is distilled off. The residue is taken up in water and washed with diethyl ether. The aqueous phase is acidified with concentrated hydrochloric acid (pH = 1 to 2). The separated solid is washed with diisopropyl ether and then dried. This gives 1.65 g of

desired sulfonylurea; Melting point: from 152 ° C under decomposition.

I) N - [(4,6-Dimethoxypyrimidin-2-yl) aminocarbonyl] -2-ethylsulfonyl-5-formylaminobenzenesulfonamide sodium salt (Table 3, Example 3-28)

10.0 g of N - [(4,6-dimethoxypyrimidin-2-yl) aminocarbonyl] -2-ethylsulfonyl-5-formylaminobenzenesulfonamide (see Example k) are placed in 20 ml of methanol. After adding 4.2 ml of a 30% solution of Sodium methylate in methanol, the mixture is stirred at room temperature. After distilling off the solvent, 9.7 g of a colorless are obtained

Solid, which one for the subsequent biological experiments

has sufficient degree of purity; Melting point: from 197-202 ° C (Z.).

Those described in Tables 1, 2, 3, 4, 5, 6 and 7 below

Compounds are obtained according to or analogously to Examples a) to I) above.

B. Formulation Examples a) A dust is obtained by adding 10 parts by weight of a

Mixing compound of formula (I) and 90 parts by weight of talc as an inert substance and comminuted in a hammer mill. b) A wettable powder which is readily dispersible in water is obtained by mixing 25 parts by weight of a compound of the formula (I),

64 parts by weight of quartz containing kaolin as an inert substance, 10 parts by weight of potassium lignosulfonate and 1 part by weight sodium oleoylmethyl taurine as a wetting and dispersing agent and mixed in a pin mill. c) A dispersion concentrate which is readily dispersible in water is obtained by mixing 20 parts by weight of a compound of the formula (I) with 6 parts by weight of alkylphenol polyglycol ether (®Triton X 207) and 3 parts by weight

Isotridecanol polyglycol ether (8 EO) and 71 parts by weight of paraffinic mineral oil (boiling range e.g. approx. 255 to above 277 ° C) are mixed and ground in a friction ball mill to a fineness of less than 5 microns. d) An emulsifiable concentrate is obtained from 15 parts by weight of a compound of formula (I), 75 parts by weight of cyclohexanone

Solvent and 10 parts by weight of ethylated nonylphenol as

Emulsifier. e) A water-dispersible granulate is obtained by:

75 parts by weight of a compound of the formula (I),

10 parts by weight of calcium lignosulfonic acid,

5 parts by weight of sodium lauryl sulfate,

3 parts by weight of polyvinyl alcohol and

7 parts by weight of kaolin mixes, grinds on a pin mill and granulates the powder in a fluidized bed by spraying water as granulating liquid. f) Water-dispersible granules are also obtained by adding 25 parts by weight of a compound of the formula (I),

5 parts by weight of 2,2'-dinaphthylmethane-6,6'-disulfonic acid sodium,

2 parts by weight of oleoylmethyl tauric acid sodium,

1 part by weight of polyvinyl alcohol,

17 parts by weight of calcium carbonate and

50 parts by weight of water

homogenized on a colloid mill and pre-crushed, then ground on a bead mill and the suspension thus obtained in one

The spray tower is atomized and dried using a single-component nozzle.

C. Biological examples

1. Pre-emergence weed action

Seeds or rhizome pieces of monocotyledonous and dicotyledonous weed plants are placed in sandy loam in plastic pots and covered with soil. The compounds according to the invention formulated in the form of wettable powders or emulsion concentrates are then applied as an aqueous suspension or emulsion with a water application rate of the equivalent of 600 to 800 l / ha in different dosages to the surface of the covering earth.

After the treatment, the pots are placed in the greenhouse and kept under good growth conditions for the weeds. The visual assessment of the damage to the plants or the soiling occurs after the soiling

Trial plants after a trial period of 3 to 4 weeks compared to untreated controls. As the test results show, the

Compounds according to the invention have a good herbicidal pre-emergence activity against a broad spectrum of grasses and weeds. For example have Examples Nos. 1-26, 2-26, 3-1, 3-13, 3-16, 3-26, 3-51, 3-76, 3-101 and 3-103 (see Tables 1 and 3) very good herbicidal activity against

Harmful plants such as Sinapis alba, Chrysanthemum segetum, Avena sativa, Stellaria media, Echinochloa crus-galli, Lolium multiflorum, Setaria spp., Abutilon theophrasti, Amaranthus retroflexus and Panicum miliaceum im

Preliminary procedure with an application rate of 0.3 kg and less

Active ingredient per hectare.

2. Post-emergence weed action

Seeds or rhizome pieces of monocotyledonous and dicotyledonous weeds are placed in sandy loam soil in plastic pots, covered with soil and grown in the greenhouse under good growth conditions. Three weeks after sowing, the test plants are treated at the three-leaf stage. Formulated as wettable powder or emulsion concentrates

Compounds according to the invention are sprayed onto the green parts of the plant in various dosages with a water application rate of the equivalent of 600 to 800 l / ha. After the test plants have stood in the greenhouse for about 3 to 4 weeks under optimal growth conditions, the effect of the preparations is assessed visually in comparison to untreated controls. The agents according to the invention also have good herbicidal activity against a broad spectrum of economically important grasses and weeds, even after emergence. For example, Examples Nos. 1-26, 2-26, 3-1, 3-13, 3-16, 3-26, 3-51, 3-76, 3-101 and 3-103 (see Tables 1 and 3) very good herbicidal activity against harmful plants such as Sinapis alba, Stellaria media,

Echinochloa crus-galli, Lolium multiflorum, Chrysanthemum segetum, Setaria spp., Abutilon theophrasti, Amaranthus retroflexus, Panicum miliaceum and Avena sativa in the post-emergence process with an application rate of 0.3 kg and less active substance per hectare. 3. Crop tolerance

In further experiments in the greenhouse, seeds of a larger number of crop plants and weeds are planted in sandy loam soil and covered with soil. Part of the pots are immediately as described in section 1

Treated described, the rest set up in the greenhouse until the plants have developed two to three real leaves and then as described in Section 2 with the substances of the formula (I) in

sprayed different doses. Four to five weeks after the

Application and service life in the greenhouse is determined by means of an optical rating that the compounds according to the invention dicotyledonous

Cultures such as Leave soy, cotton, rapeseed, sugar beet and potatoes undamaged in the pre- and post-emergence process, even with high active ingredient doses. Some substances also protect Gramineae crops such as Barley, wheat, rye, sorghum, corn or rice. The

Compounds of the formula (I) show in part a high selectivity and are therefore suitable for combating undesirable plant growth in

agricultural crops.

Claims

Claims:

1. Compounds of the formula (I) and their salts,

wherein

W is an oxygen atom or a sulfur atom,

m 0, 1, 2 or 3,

n 0, 1 or 2, R ^{* is} a radical of the formula -CHO, -CH = NR or,

Acyl, amino, mono- or disubstituted amino,

X ¹ O, S, NH or -N (alkyl),

X ² 0, S, NH or -N (alkyl),

the latter radicals is unsubstituted or substituted, R ^{2 is} halogen, CN, NO ₂ , amino, mono- or disubstituted amino, alkyl or alkoxy, each of the latter two radicals being unsubstituted or substituted,

X, Y independently of one another hydrogen, hydroxy, amino, mono- or

disubstituted amino, alkyl, cycloalkyl, alkenyl, alkynyl, alkoxy,

Alkenyloxy, alkynyloxy, cycloalkoxy or alkylthio, each of the latter 9 radicals being unsubstituted or substituted, and

Z CH, N ode, where R ^{0 is} halogen, cyano, alkyl, alkoxy, haloalkyl

or is haloalkoxy,

mean.

2. Compounds and their salts according to claim 1, characterized in that R ^{* is} a radical of the formula -CHO, -CH = NR or

(C ₁ -C ₆ ) haloalkoxy, phenyl which is unsubstituted or substituted, or [(C ₁ -C ₃ ) alkyl] carbonyl, [(C ₁ -C ₃ ) alkoxy] carbonyl, aminocarbonyl,

Methylaminocarbonyl, dimethylaminocarbonyl, mono- or

Di - [(C ₁ -C ₆ ) alkyl] amino, [(C ₁ -C ₃ ) alkyl] carbonylamino,

[C ₁ -C ₃ ) alkoxy] carbonylamino, aminocarbonylamino,

Methylaminocarbonylamino, dimethylaminocarbonylamino,

X ^{1 is} an oxygen atom,

X ^{2 is} an oxygen atom,

R ', R "independently of one another (C ₁ -C ₄ ) alkyl, R ¹ OH, NR ⁴ R ⁵ , (C ₁ -C ₆ ) alkyl, (C ₂ -C ₆ ) alkenyl, (C ₂ -C ₆ ) alkynyl, (C ₁ -C ₆ ) alkoxy, (C ₂ -C ₆ ) alkenoxy, (C ₂ -C ₆ ) alkynoxy, (C ₃ -C ₇ ) cycloalkyl, (C ₃ -C ₇ ) cycloalkoxy, (C ₃ -C ₇ ) cycloalkyl- (C ₁ -C ₂ ) alkyl, ( C ₃ -C ₇ ) Cycloalkyl- (C ₁ -C ₄ ) alkoxy, phenoxy, phenyl, thienyl, pyridyl, each of the latter fifteen radicals being unsubstituted or by one or more radicals from the group

Halogen, (C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkyl, (C ₂ -C ₄ ) alkenoxy,

(C ₂ -C ₄ ) haloalkenoxy, (C ₂ -C ₄ ) alkynoxy, (C ₂ -C ₄ ) haloalkinoxy, CN, NO ₂ , N ₃ , SCN, OCN, OH, NR ⁶ R ⁷ , CO-R ⁸ , (C ₁ -C ₄ ) alkylthio, (C ₁ -C ₄ ) haloalkylthio, unsubstituted and substituted phenyl, SO-R ⁹ and SO ₂ R ¹⁰ and in the case of cyclic radicals also (C ₁ -C ₄ ) alkyl and (C ₁ -C ₄ ) haloalkyl is substituted,

NR ^{1 1} R ¹² , CN, (C ₁ -C ₃ ) alkoxy or (C ₁ -C ₃ ) haloalkoxy,

R ³ H, OH, (C ₁ -C ₃ ) alkyl, (C ₂ -C ₃ ) alkenyl, (C ₂ -C ₃ ) alkynyl or (C ₁ -C ₃ ) alkoxy,

(C ₁ -C ₃ ) haloalkylthio is substituted, and

[C ₂ -C ₄ ) alkenoxy] carbonyl, [(C ₁ -C ₄ ) alkyl] aminocarbonyl,

Di [(C ₁ -C ₄ ) alkyl] amino-carbonyl, (C ₁ -C ₄ ) alkyl-sulfonyl,

(C ₂ -C ₄ ) alkenyl sulfonyl, (C ₁ -C ₄ ) alkylaminosulfonyl,

or NR ⁴ R ⁵ together form a heterocyclic radical which, in addition to the N atom

further hetero units from the group O, N, S, SO or SO ₂ im

May contain ring structure and the unsubstituted or by one or several residues from the group oxo function, halogen, OH, NH ₂ , NO ₂ , NHCH ₃ , N (CH ₃ ) ₂ , CN, CONH ₂ , CONHCHg, CO-OCH ₃ , CON (CH ₃ ) ₂ ,

COCH ₃ , CO-H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) alkoxy and

(C ₁ -C ₃ ) haloalkoxy is substituted,

(C ₂ -C ₃ ) haloalkoxy and

or NR ⁶ R ⁷ together form a heterocyclic radical which, in addition to the N atom

further hetero units from the group O, N, S, SO or SO ₂ im

May contain ring structure and which is unsubstituted or by one or more radicals from the group halogen, OH, NH ₂ , NO ₂ , CONHCH ₃ , CONH ₂ , NHCH ₃ , N (CH ₃ ) ₂ , CN, CO ₂ CH ₃ , CON ( CH ₃ ) ₂ , COCH ₃ , CO-H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkoxy and oxo function is

R ⁸ H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkoxy,

(C ₁ -C ₃ ) alkylthio, (C ₁ -C ₃ ) haloalkylthio, NH ₂ , NHCH ₃ , N (CH ₃ ) ₂ or OH,

(C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkoxy, (C ₂ -C ₄ ) alkenoxy, (C ₂ -C ₄ ) haloalkenoxy, NH ₂ , mono- or di [(C ₁ -C ₄ ) alkyl] amino,

R ¹¹ H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkoxy or OH and

R ¹² H, (C ₁ -C ₃ ) alkyl, (C ₁ -C ₃ ) haloalkyl, CHO, COCH ₃ , CO ₂ CH ₃ , CO ₂ C ₂ H ₅ ,

S0 ₂ CH ₃ or CN

May contain ring structure, and which is unsubstituted or by one or more radicals from the group halogen, OH, NH ₂ , NO ₂ , NHCH ₃ , N (CH ₃ ) ₂ , CN, CONHCH ₃ , CO ₂ CH ₃ , COCH ₃ , CON (CH ₃ ) ₂ , CO-H, (C ₁ -C ₃ ) alkyl, CONH ₂ , (C ₁ -C ₃ ) alkoxy, (C ₁ -C ₃ ) haloalkyl, (C ₁ - _C3 ) haloalkoxy and

Oxo function is substituted,

(C ₁ -C ₄ ) alkylthio and (C ₁ -C ₄ ) haloalkylthio is substituted, and

Z CH or N,

mean.

3. Compounds and their salts according to claim 1 or 2, characterized

characterized in that

R ¹ (C ₁ -C ₄ ) alkyl, (C ₂ -C ₄ ) alkenyl, (C ₂ -C ₄ ) alkynyl, (C ₁ -C ₄ ) alkoxy, each of the latter 4 radicals being unsubstituted or by one or more Radicals from the group halogen, (C ₁ -C ₄ ) alkoxy and (C ₁ -C ₄ ) alkylthio, or (C ₃ -C ₆ ) cycloalkyl, benzyl, phenyl, thienyl, pyridyl, each of the latter 5 radicals unsubstituted or by one or more radicals from the group halogen, (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkyl, (C ₁ -C ₄ ) haloalkoxy, CN, NO ₂ and OH is substituted, or NH ₂ , mono- or di [(C ₁ -C ₄ ) alkyl] amino,

n 0, 1 or 2,

R ² (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy or halogen,

m 0, 1, 2 or 3,

one of the radicals X and Y halogen, (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy, (C ₁ -C ₄ ) haloalkyl, (C ₁ -C ₄ ) haloalkoxy, mono- or di- [ (C ₁ -C ₄ ) alkyl] amino and

the other of the radicals X and Y (C ₁ -C ₄ ) alkyl, (C ₁ -C ₄ ) alkoxy or

(C ₁ -C ₄ ) Haloalkoxy mean.

4. A process for the preparation of the compounds of formula (I) and their salts according to claim 1, characterized in that

a) a compound of formula (II)

with a heterocyclic carbamate of the formula (III),

in which R ^{** is} unsubstituted or substituted phenyl or (C ₁ -C ₄ ) alkyl, or b) a sulfochloride of the formula (IV)

with a heterocyclic amine of the formula (V),

in the presence of a cyanate or c) a sulfonamide of the formula (II) (see a) in succession with a

Aryl chloroformate of the formula (VI),

Ar-O-CO-CI (VI) wherein Ar is an unsubstituted or substituted aryl radical, and with a heterocyclic amine of the formula (V) (see b) or

d) a sulfonylurea of the formula (VII)

Analogously known methods for the compound of formula (I), wherein

R ^* = CHO is formylated and in the case of R ^* = CH = NR or

R ^* = CH (X ¹ R ') (X ² R ") the obtained formyl compound to the above

Formyl equivalent of formula (I) derivatized or e) a sulfonamide of formula (II) (see variant a) with a (thio) isocyanate of formula (VIII)

in the presence of a suitable base, where in the above formulas (II) to (VIII) the radicals R ¹ , R ² , R ³ , R ^* , W, X, Y and Z and the indices m and n are as defined in formula (I) and in the Variants a) to c) are first obtained compounds of formula (I) with W = O.

5. Herbicidal or plant growth regulating agents, thereby

characterized in that it is at least one compound of formula (I) or its salt according to one of claims 1 to 3 and customary in crop protection

Contains formulation aids.

6. Procedures for controlling harmful plants or

Regulating the growth of plants, characterized in that an effective amount of at least one compound of the formula (I) or one of its salts according to one of Claims 1 to 3 is applied to the harmful plants or

Plants, their plant seeds or the area on which they grow, applied.

7. Use of the compounds of formula (I) or their salts according to one of claims 1 to 3 as herbicides or plant growth regulators.

8. Compounds of the formula (XVII)

wherein

U ^* denotes NH ₂ , Cl or mono- or disubstituted amino and

R ^* , R ¹ , R ² , n and m are as defined in formula (I) according to one of claims 1 to 3.