申请人:Hoechst Aktiengesellschaft
公开号:US04960887A1
公开(公告)日:1990-10-02
The invention relates to a process for the preparation of compounds of the formula I ##STR1## in which X and Y denote O or S; R.sup.1 and R.sup.2 denote (substituted) alkyl, R.sup.3 denotes H or a --COR.sup.4 radical in which R.sup.4 is alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, (substituted) phenyl or (substituted) phenoxy, wherein a propanediimidate of the formula II ##STR2## or a salt thereof is reacted, in an inert solvent and in the presence of a base, with a carbonic acid imine derivative of the formula III ##STR3## in which R.sup.5 denotes halogen, alkoxy, alkylthio, phenoxy or phenylthio.
该发明涉及一种制备式I的化合物的方法
其中X和Y表示O或S;R.sup.1和R.sup.2表示(取代)烷基,R.sup.3表示H或--COR.sup.4基团,其中R.sup.4为烷基、卤代烷基、烷氧基、卤代烷氧基、(取代)苯基或(取代)苯氧基,在惰性溶剂中与碳酸亚胺衍生物式III ##STR3## 其中R.sup.5表示卤素、烷氧基、烷基硫醚、苯氧基或苯基,反应。