申请人:Ciba-Geigy Corporation
公开号:US04419121A1
公开(公告)日:1983-12-06
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 a C.sub.1 -C.sub.6 alkyl radical which is substituted by C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfinyl, or C.sub.1 -C.sub.4 alkylsulfonyl, X is oxygen, sulfur, a sulfinyl or sulfonyl bridge, 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. pg,2
N-苯磺酰基-N'-嘧啶基脲的一般化学式为##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后除草和生长调节性能。在上述式中,A是一个C.sub.1-C.sub.6烷基基团,该基团被C.sub.1-C.sub.4烷氧基、C.sub.1-C.sub.4烷基硫醚基、C.sub.1-C.sub.4烷基磺醚基或C.sub.1-C.sub.4烷基磺基取代;X是氧、硫、亚砜或砜桥;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,或一个基团--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各自独立地是氢、C.sub.1-C.sub.4烷基、C.sub.1-C.sub.4烷氧基、C.sub.1-C.sub.4烷基硫醚基、C.sub.1-C.sub.4卤代烷基、卤素或至多有4个碳原子的烷氧基烷基;R.sub.5和R.sub.6各自独立地是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各自独立地是氢、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、亚砜或砜桥。