| 摘要 |
N-Phenylsulfonyl-N'-pyrimidinylureas and -N'-triazinylureas of the general formula <IMAGE> 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 R1 is hydrogen, halogen, nitro, C1-C4haloalkyl, C1-C4alkyl, C1-C4alkoxy, C2-C5alkenyl or C1-C4alkoxycarbonyl, R2 is C1-C3alkyl or C1-C3alkoxy, each unsubstituted or substituted by 1 to 3 halogen atoms, R3 is halogen, hydrogen, -NR4R5, C1-C3alkyl, unsubstituted or substituted by 1 to 3 halogen atoms or C1-C4alkoxy, or is C1-C3alkoxy, unsubstituted or substituted by methoxy, ethoxy, or 1 to 3 halogen atoms, R4 is hydrogen or methyl, R5 is hydrogen, C1-C2 alkyl or methoxy, A is C1-C4alkylene or C2-C4alkenylene, each unsubstituted or substituted by C1-C4alkyl, m is 0 or 1, E is nitrogen or the methine group, X is oxygen, sulfur, -SO- or -SO2-, 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.
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