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.
式I的取代磺酰脲化合物,其中R1为氢、C1-C4烷基、C3-C4烯基或炔基、C1-C4卤代烷基、C3-C6烷氧基烷基、C4-C6卤代烷氧基烷基或C5-C6环烷基,R2为氢、甲基或乙基,R3为氢、卤素、甲基或甲氧基,R4为氢、甲基或甲氧基,X为N或C-H,Hal为氟、氯或溴,以及其碱金属或碱土金属盐,但当Hal为氯且X为N时,R1不为甲基。制备式I的磺酰脲化合物的方法以及它们作为除草剂的用途。