申请人:ICI Americas Inc.
公开号:US04957538A1
公开(公告)日:1990-09-18
Herbicidal compounds of the structural formula ##STR1## wherein X is oxygen or sulfur; R is chlorine or bromine; R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.4 is hydroxy, hydrogen or C.sub.1 -C.sub.4 alkyl; or R.sup.3 and R.sup.4 together are carbonyl (.dbd.0) with the proviso that R.sup.1 , R.sup.2, R.sup.5 and R.sup.6 are all C.sub.1 -C.sub.4 alkyl; R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.6 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkylthio, or C.sub.1 -C.sub.4 alkylsulfonyl, with the proviso that when R.sup.6 is C.sub.1 -C.sub.4 alkylthio or C.sub.1 -C.sub.4 alkylsulfonyl, then R.sup.3 and R.sup.4 are not together carbonyl; R.sup.7 is methyl or ethyl; and R.sup.8 is (1) halogen; (2) nitro; or (3) R.sup. b SO.sub.n --wherein n is the integer 0 or 2; and R.sup.b is (a) C.sub.1 -C.sub.3 alkyl; and their salts.
结构式为##STR1##的除草化合物,其中X为氧或硫;R为氯或溴;R.sup.1为氢或C.sub.1-C.sub.4烷基;R.sup.2为氢或C.sub.1-C.sub.4烷基;R.sup.3为氢或C.sub.1-C.sub.4烷基;R.sup.4为羟基,氢或C.sub.1-C.sub.4烷基;或R.sup.3和R.sup.4在一起是羰基(.dbd.0),但R.sup.1,R.sup.2,R.sup.5和R.sup.6均为C.sub.1-C.sub.4烷基;R.sup.5为氢或C.sub.1-C.sub.4烷基;R.sup.6为氢,C.sub.1-C.sub.4烷基,C.sub.1-C.sub.4烷基硫醚或C.sub.1-C.sub.4烷基磺酰基,但当R.sup.6为C.sub.1-C.sub.4烷基硫醚或C.sub.1-C.sub.4烷基磺酰基时,R.sup.3和R.sup.4不在一起是羰基;R.sup.7为甲基或乙基;R.sup.8为(1)卤素;(2)硝基;或(3)R.sup.bSO.sub.n --,其中n为整数0或2;R.sup.b为(a)C.sub.1-C.sub.3烷基;及其盐。