高分子载体催化剂的研究和开发日益受到重视。四氯化锡是一种常用的强Iewis酸,在空气中强烈水解而产生大量盐酸烟雾,保存和使用都不方便,我们曾将四氯化锡与聚苯乙烯交联白球反应制成了一种高分子载体催化剂,对酯化、缩醛、缩酮等有机反应有良好的催化性能,但它在反应中洗脱流失严重,重复使用性能很差,基本上是十种高分子保护型的载体催化剂。为了改善其稳定性,从而提高重复使用性能,我们合成了含有富电子基团的新高分子载体,使四氯化锡与载体中的富电子基团形成较稳定的复合物,使之既保持良好的催 Research and development of polymer carrier catalysts are gaining more and more attention. Tin tetrachloride is a commonly used strong Iewis acid, strong hydrolysis in the air to produce a large number of hydrochloric acid smoke, preservation and use are not convenient, we have four tin chloride and polystyrene cross-linked white ball made a Kind of polymer carrier catalyst, esterification, acetal, ketal and other organic reactions have good catalytic performance, but it elution in the reaction serious loss, poor performance of repeated use, basically ten kinds of polymer-protected Carriers Catalyst. In order to improve its stability and thereby improve the reusability, we have synthesized a new polymer carrier containing electron-rich groups to make tin tetrachloride and electron-rich groups in the carrier to form a more stable complex so as to keep both good Reminder