Compounds having the formula ##STR1## in which R.sub.1 is optionally substituted phenyl, R.sub.2 is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 haloalkyl and W is oxygen or sulfur are produced by reaction of a corresponding phenyl cyanamide with an epoxide or episulfide in the presence of a base and optionally a solvent.
具有以下
化学式##STR1##的化合物,其中R.sub.1是可选择取代的苯基,R.sub.2是C.sub.1-C.sub.4烷基或C.sub.1-C.sub.4卤代烷基,W是氧或
硫,通过在碱和可选择的溶剂的存在下,将相应的
苯基氰胺与
环氧化物或环
硫醚反应而制得。