Sulfonylurea derivatives of the formula I ##STR1## where R.sup.1 is unsubstituted or substituted alkyl or phenyl; alkenyl or propargyl, alkylamino or dialkylamino; R.sup.2 is hydrogen, halogen, unsubstituted or substituted methyl, methoxy or ethoxy, alkylsulfonyl, nitro or cyano; R.sup.3 is difluoromethoxy, trifluoromethoxy, bromodifluoromethoxy, chlorodifluoromethoxy or fluorine; R.sup.4 is halogen, unsubstituted or halogen-substituted methyl, ethyl, methoxy or ethoxy or is methylamino or dimethylamino; R.sup.5 is hydrogen, alkyl or alkenyl or alkynyl, and Z is CH or N, with the proviso that a) when R.sup.3 is difluoromethoxy, R.sup.1 is not dialkylamino, R.sup.2 is not alkylsulfonyl and R.sup.4 is not methyl or methoxy and b) when R.sup.3 is fluorine and Z is N, R.sup.4 is not alkylamino, and salts thereof are suitable as herbicides.
磺酰
脲衍
生物的
化学式为I ##STR1## 其中R.sup.1是未取代或取代的烷基或苯基;烯基或
丙炔基,烷基
氨基或二烷基
氨基;R.sup.2是氢,卤素,未取代或取代的甲基,甲氧基或乙氧基,烷基磺酰基,硝基或
氰基;R.sup.3是二
氟甲氧基,三
氟甲氧基,
溴二
氟甲氧基,
氯二
氟甲氧基或
氟;R.sup.4是卤素,未取代或卤素取代的甲基,乙基,甲氧基或乙氧基或是甲基
氨基或二甲基
氨基;R.sup.5是氢,烷基或烯基或炔基,Z是CH或N,但需注意a)当R.sup.3是二
氟甲氧基时,R.sup.1不是二烷基
氨基,R.sup.2不是烷基磺酰基,R.sup.4不是甲基或甲氧基;b)当R.sup.3是
氟且Z是N时,R.sup.4不是烷基
氨基,其盐可用作
除草剂。