An alkyl 2-thiosubstituted-3-substituted-2-butenoate ##STR1## is prepared by reacting an alkyl 2-chloro-3-substituted-3-butenoate with a thio compound under phase transfer conditions.
一种烷基2-
硫代取代-3-取代-
2-丁烯酸酯##STR1## 通过在相转移条件下将烷基2-
氯代-3-取代-3-
丁烯酸酯与
硫化合物反应制备。