申请人:BASF Aktiengesellschaft
公开号:US05104441A1
公开(公告)日:1992-04-14
Substituted sulfonylureas of the formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.4 -alkenyl or alkynyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.3 -C.sub.6 -alkoxyalkyl, C.sub.4 -C.sub.6 -haloalkoxyalkyl or C.sub.5 -C.sub.6 -cycloalkyl, R.sup.2 is hydrogen, methyl or ethyl, R.sup.3 is hydrogen, halogen, methyl or methoxy, R.sup.4 is hydrogen, methyl or methoxy, X is N or C--H, and Hal is fluorine, chlorine or bromine, and alkali metal or alkaline earth metal salts thereof, with the proviso that R.sup.1 is not methyl when Hal is chlorine and X is N, a process for the manufacture of sulfonylureas of the formula I and their use as herbicides.
公式I的取代磺酰脲化合物如下所示:##STR1## 其中,R.sup.1是氢,C.sub.1-C.sub.4烷基,C.sub.3-C.sub.4烯基或炔基,C.sub.1-C.sub.4卤代烷基,C.sub.3-C.sub.6氧烷基烷基,C.sub.4-C.sub.6卤代氧烷基烷基或C.sub.5-C.sub.6环烷基,R.sup.2是氢,甲基或乙基,R.sup.3是氢,卤素,甲基或甲氧基,R.sup.4是氢,甲基或甲氧基,X是N或C--H,Hal是氟,氯或溴,以及它们的碱金属或碱土金属盐。但是,当Hal为氯且X为N时,R.sup.1不是甲基。本发明还涉及一种制造公式I磺酰脲化合物的方法以及它们作为除草剂的用途。