申请人:Ciba-Geigy Corporation
公开号:US04425154A1
公开(公告)日:1984-01-10
N-Phenylsulfonyl-N'-pyrimidinyl ureas of the formula ##STR1## and the salts thereof with amines, alkali metal or alkaline earth metal bases or with quaternary ammonium bases, have good pre- and postemergence selective herbicidal and growth regulating properties. In the above formula A is a C.sub.2 -C.sub.6 alkenyloxy, C.sub.2 -C.sub.6 haloalkenyloxy, C.sub.2 -C.sub.6 haloalkenylthio, C.sub.2 -C.sub.6 haloalkenylsulfinyl or C.sub.2 -C.sub.6 haloalkenylsulfonyl radical Z is oxygen or sulfur, m is 1 or 2, R.sub.2 is hydrogen, halogen, C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl, C.sub.1 -C.sub.4 haloalkyl, or a radical --Y--R.sub.5, --COOR.sub.6, --NO.sub.2 or --CO--NR.sub.7 --R.sub.8, R.sub.3 and R.sub.4, each independently of the other, are hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkyl, halogen or alkoxyalkyl of at most 4 carbon atoms, R.sub.5 and R.sub.6, each independently of the other, are C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl or C.sub.2 -C.sub.6 alkynyl, R.sub.7 and R.sub.8, each independently of the other, are hydrogen, C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl or C.sub.2 -C.sub.6 alkynyl, and Y is oxygen, sulfur, a sulfinyl or sulfonyl bridge.
N-苯磺酰-N'-嘧啶基脲的化学式为##STR1##,其与胺、碱金属或碱土金属碱或季铵碱的盐具有良好的前期和后期选择性除草和生长调节性能。在上述化学式中,A是C.sub.2 -C.sub.6烯氧基、C.sub.2 -C.sub.6卤代烯氧基、C.sub.2 -C.sub.6卤代烯基硫、C.sub.2 -C.sub.6卤代烯基亚硫酰基或C.sub.2 -C.sub.6卤代烯基磺酰基基团,Z是氧或硫,m为1或2,R.sub.2是氢、卤素、C.sub.1 -C.sub.5烷基、C.sub.2 -C.sub.5烯基、C.sub.1 -C.sub.4卤代烷基,或基团--Y--R.sub.5、--COOR.sub.6、--NO.sub.2或--CO--NR.sub.7 --R.sub.8,R.sub.3和R.sub.4,各自独立于其他,是氢、C.sub.1 -C.sub.4烷基、C.sub.1 -C.sub.4烷氧基、C.sub.1 -C.sub.4烷硫基、C.sub.1 -C.sub.4卤代烷基、卤素或最多4个碳原子的烷氧基烷基,R.sub.5和R.sub.6,各自独立于其他,是C.sub.1 -C.sub.5烷基、C.sub.2 -C.sub.5烯基或C.sub.2 -C.sub.6炔基,R.sub.7和R.sub.8,各自独立于其他,是氢、C.sub.1 -C.sub.5烷基、C.sub.2 -C.sub.5烯基或C.sub.2 -C.sub.6炔基,Y是氧、硫、亚硫酰基或磺酰基桥。