申请人:Ciba-Geigy Corporation
公开号:US04561878A1
公开(公告)日:1985-12-31
N-Phenylsulfonyl-N'-pyrimidinylureas of the general 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 difluoromethyl, trifluoromethyl, 1,1,2,2-tetrafluoroethyl, 1,1,2-trifluoro-2-chloro-ethyl or 1,1,2,3,3,3-hexafluoropropyl, X is oxygen, sulfur, a sulfinyl or sulfonyl bridge, Z is oxygen or sulfur, 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 is 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.4 is halogen, C.sub.2 -C.sub.4 alkyl, C.sub.3 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkyl or ethoxymethyl, 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-苯磺酰基-N'-嘧啶基脲的一般式如下:##STR1##及其与胺、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。在上述式中,A为二氟甲基、三氟甲基、1,1,2,2-四氟乙基、1,1,2-三氟-2-氯乙基或1,1,2,3,3,3-六氟丙基,X为氧、硫、亚砜或磺酰桥,Z为氧或硫,R.sub.2为氢、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为氢、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、卤素或至多4个碳原子的烷氧基烷基,R.sub.4为卤素、C.sub.2-C.sub.4烷基、C.sub.3-C.sub.4烷氧基、C.sub.1-C.sub.4卤代烷基或乙氧甲基,R.sub.5和R.sub.6,各自独立,为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,为氢、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为氧、硫、亚砜或磺酰桥。