HETEROCYCLICALLY SUBSTITUTED SULFONYLUREAS, PROCESS FOR THEIR PREPARATION, AND THEIR USE AS HERBICIDES OR PLANT GROWTH REGULATORS

摘要

Heterocyclically substituted sulfonylureas, process for their preparation, and their use as herbicides or plant growth regulators Sulfonylureas of the formula where A is a bond or a C1-C10-hydrocarbon radical, R1 is an optionally unsaturated hydrocarbon radical which is optionally substituted by halogen, option- ally unsaturated alkoxy, alkylthio, alkylsulfonyl or alkylsulfinyl, cycloalkyl, optionally substituted phenyl or a heterocycle, or is optionally substitu- ted phenyl, NRR' with R and R' being alkyl, alkoxy or alkylene (cyclic with N), Y is S, SO or SO2, R2 is optionally unsaturated alkoxy which is optionally substituted, or is cycloalkoxy, cycloalkenyloxy, cyclopropylmethyloxy, epoxypropyloxy, furfuryloxy, tetrahydrofurfuryloxy or optionally substituted phenoxyalkoxy or phenoxy, R3 is alkyl which is optionally unsaturated, or is alkoxy, R4 is optionally substituted pyrimidinyl, pyrimidinyl- methyl, pyrimidinyl with a fused-on cyclopentane, oxolane, oxolene, oxane, pyridine or pyrazine ring or purinyl or triazolyl, and Z is O or S, have herbicidal and/or plant-growth-regulatory proper- ties.