N-phenylsulfonyl-N'-pyrimidinylureas

Abstract

N-Phenylsulfonyl-N'-pyrimidinylureas and -N'-triazinylureas of the general formula ##STR1## and the salts of these compounds with amines, alkali metal bases and alkaline earth metal bases or with quaternary ammonium bases, have good selective herbicidal and plant growth regulating properties when applied pre- and postemergence. In the formula R.sub.1 is hydrogen, halogen, nitro, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.5 alkenyl or C.sub.1 -C.sub.4 alkoxycarbonyl, R.sub.2 is C.sub.1 -C.sub.2 alkyl or C.sub.1 -C.sub.3 alkoxy, each unsubstituted or substituted by 1 to 3 halogen atoms, R.sub.3 is halogen, hydrogen, --NR.sub.4 R.sub.5, C.sub.1 -C.sub.3 alkyl, unsubstituted or substituted by 1 to 3 halogen atoms or C.sub.1 -C.sub.4 alkoxy, or is C.sub.1 -C.sub.3 alkoxy, unsubstituted or substituted by methoxy, ethoxy, or 1 to 3 halogen atoms, R.sub.4 is hydrogen or methyl, R.sub.5 is hydrogen, C.sub.1 -C.sub.2 alkyl or methoxy, A is C.sub.1 -C.sub.4 alkylene or C.sub.2 -C.sub.4 alkenylene, each unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, m is 0 or 1, E is nitrogen or the methine group, X is oxygen, sulfur, --SO-- or --SO.sub.2 --, and Q is hydroxyl, cyano or radicals selected from the group consisting of 5- or 6-membered heterocyclic rings and fused homologues, amines, acetals, esters, ketones, phenyls, sulfonic acid and carboxylic acids, which radicals may be further substituted and have functional structures.

Dependencies are inferred from the claim text.