申请人:Ciba-Geigy Corporation
公开号:US04759796A1
公开(公告)日:1988-07-26
2-Phenoxypropionic acid cyanamides of the formula ##STR1## have a useful selective herbicidal activity against weeds, preferably grass weeds, in crops of useful plants. In this formula R is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.4 alkenyl, C.sub.3 -C.sub.4 alkynyl or C.sub.2 -C.sub.4 alkoxyalkyl, and T is a radical ##STR2## wherein A is oxygen or sulfur, X is fluorine, chlorine, bromine, iodine or trifluoromethyl, Y is hydrogen, fluorine, chlorine, bromine or trifluoromethyl, and Z is nitrogen or the methine bridge.
式为##STR1##的2-苯氧基丙酸氰胺在有用植物作物中对杂草,特别是草本杂草具有有用的选择性除草活性。在此式中,R为氢,C.sub.1-C.sub.4烷基,C.sub.3-C.sub.4烯基,C.sub.3-C.sub.4炔基或C.sub.2-C.sub.4烷氧基烷基,T为基团##STR2##其中A为氧或硫,X为氟,氯,溴,碘或三氟甲基,Y为氢,氟,氯,溴或三氟甲基,Z为氮或甲基桥。