| 摘要 |
N-Phenylsulfonyl-N'-pyrimidinylureas and -thioureas of formula I <IMAGE> in which X is oxygen, sulfur, SO or SO2; W is oxygen or sulfur; R1 is hydrogen or methyl; R2 is hydrogen, fluorine, chlorine, bromine, iodine, (X)nR3, NO2, NR4R5, <IMAGE> or cyano; n is the number 0 or 1; R3 is C1-C4 alkyl or C1-C4 alkyl which is substituted by 1-4 halogen atoms, C1-C3alkoxy or C1-C3alkylthio; or C2-C4alkenyl or C2-C4alkenyl which is substituted by 1-4 halogen atoms; R4 is hydrogen, CH3O, CH3CH2O or C1-C3alkyl; R5 is hydrogen or C1-C3alkyl; R6 is hydrogen, methyl or ethyl; R7 is hydrogen or methyl; Z is <IMAGE> Z1 E is methine; R8 is C1-C4alkyl, C1-C4alkoxy, C1-C4haloalkoxy, C1-C4haloalkyl, C1-C4haloalkylthio, C1-C4alkylthio, halogen, C2-C5alkoxyalkyl, C2-C5alkoxyalkoxy, amino, C1-C3alkylamino or di(C1-C3alkyl)amino; R9 is C1-C4alkyl, C1-C4alkoxy, C1-C4haloalkoxy, C1-C4haloalkylthio, C1-C4alkylthio, C2-C5alkoxyalkyl, C2-C5alkoxyalkoxy, C2-C5alkylthioalkyl or cyclopropyl; and the salts of these compounds with amines, alkali metal or alkaline earth metal bases or quaternary ammonium bases have good pre- and postemergence selective herbicidal and growth-regulating properties.
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