一、引言相转移催化方法(PTC)是有机合成反应中最引人注目的新技术之一。这种方法具有非常广泛的应用范围。从化学观点来看,有的原料在其它条件下不能起反应或易于分解,如用PTC法则可用于制备化合物,并且在多数合成反应中,能提高反应的选择性和收率。从实用观点来看,相转移反应具有方法简单、后处理方便、所用试剂和溶剂的价格低廉等优点。 I. Introduction Phase transfer catalysis (PTC) is one of the most striking new technologies in organic synthesis. This method has a very wide range of applications. From a chemical point of view, some of the raw materials under other conditions can not react or easy to decompose, such as the PTC method can be used to prepare compounds, and in most synthetic reactions, can improve the selectivity and yield of the reaction. From a practical point of view, the phase transfer reaction has the advantages of simple method, convenient post-treatment, low cost of reagents and solvents used.