摘要 |
The present invention relates to benzenesulfonamide derivatives of the formula I in which the variables are as defined below: X<SUP>1 </SUP>is hydrogen or halogen; X<SUP>2 </SUP>is hydrogen, cyano, CS-NH<SUB>2</SUB>, halogen, alkyl or haloalkyl; X<SUP>3 </SUP>is hydrogen, cyano, alkyl, alkoxyalkyl, cycloalkyl, alkenyl, alkynyl or phenylalkyl, where the phenyl radical for its part may be substituted; Y is a group -C(A)B, SO<SUB>2 </SUB>or SO<SUB>2</SUB>NR<SUP>2</SUP>; A is oxygen or sulfur; B is oxygen, sulfur, NR<SUP>2 </SUP>or a bond; R<SUP>1 </SUP>is hydrogen, halogen, hydroxy, alkyl, cycloalkyl, cycloalkylalkyl, alkenyl, cycloalkenyl, alkynyl, alkoxy, cycloalkyloxy, alkenyloxy, alkynyloxy, aryl, aryloxy, arylalkyl, where the 13 last mentioned radicals for their part may be substituted; unsubstituted or substituted four- to six-membered heterocyclyl; unsubstituted or substituted four- to six-membered heterocyclyl-C<SUB>1</SUB>-C<SUB>4</SUB>-alkyl; unsubstituted or substituted five- or six-membered heteroaryl having one to four nitrogen atoms or having one to three nitrogen atoms and one oxygen or one sulfur atom or having one oxygen or sulfur atom; or unsubstituted or substituted five- or six-membered heteroaryl-C<SUB>1</SUB>-C<SUB>4</SUB>-alkyl having one to four nitrogen atoms or having one to three nitrogen atoms and one oxygen or one sulfur atom or having one oxygen or sulfur atom; R<SUP>2 </SUP>is hydrogen,-alkyl, alkenyl, alkynyl, cycloalkyl, where the four last mentioned radicals may be partially or fully halogenated; or R<SUP>1 </SUP>and R<SUP>2 </SUP>together with the nitrogen atom to which they are attached form an unsubstituted or substituted three- to seven-membered heterocycle; Q is a radical from the group consisting of Q<SUP>1 </SUP>to Q<SUP>39</SUP>; to processes and intermediates for their preparation and to the use of these compounds or of the compositions comprising these compounds for controlling unwanted plants and for the desiccation/defoliation of plants.
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