Substituted cyclohexene-1,2-dicarboxylic acid derivatives and intermediates for their preparation

Abstract

Substituted cyclohexene-1,2-dicarboxylic acid derivatives I (R1 and R2 are each H, unsubstituted or substituted C1-C6-alkyl, C3-C6-alkenyl or C3-C6-alkynyl, C3-C8-cycloalkyl, unsubstituted or substituted phenyl or heterocyclyl and, if R1 is H or C1-C6-alkyl, R2 is additionally OH, C1-C6-alkoxy, C3-C6-alkenyloxy, C3-C6-alkynyloxy, C3-C6-cycloalkoxy, C5-C7-cycloalkenyloxy, C1-C6-haloalkoxy, C3-C6-haloalkenyloxy, C3-C7-cycloalkyl-C1-C6-alkoxy, C1-C6-alkyl-carbonyloxy, C1-C6-cyanoalkoxy, hydroxy-C1-C6-alkoxy, C1-C6-alkoxy-C1-C6-alkoxy, C1-C6-alkoxycarbonyl-C1-C6-alkoxy, C1-C6-alkoxy-C1-C6-alkoxy, C1-C6-alkylamino-C1-C6-alkoxy, C1-C6-dialkylamino-C1-C6-alkoxy, unsubstituted or substituted phenyl-C1-C6-alkoxy, phenyl-C3-C6-alkenyloxy or phenyl-C3-C7-alkynyloxy or unsubstituted or substituted amino, or R1 and R2, together with the nitrogen atom to which they are bonded, form an unsubstituted or substituted 3-membered to 8-membered heterocyclic structure, R3 is H or C1-C6-alkyl, R4 is H or halogen, R5 is H, halogen, NO2, CN or CF3, R6 is an unsubstituted or substituted 3-membered to 8-membered heterocyclic group, —A—CN, —A—CO—B, OR9, —C(R10)═O, —C(R10)═S, —C(R10)═N—R16, —CHR10)—CHR11—CO—B, —C(X1R14)(X2R15)R10 or —P(R12)(R13)═O, where the stated radicals have the meanings listed in the description, or R5 and R6 together form a 3-membered to 5-membered substituted carbon chain, and the agriculturally useful salts of Ia and Ib and intermediates for their preparation. The compounds Ia and Ib and their intermediates are suitable as herbicides and for the desiccation/defoliation of plants.

Dependencies are inferred from the claim text.