【摘要】 用交联聚苯乙烯白球与三溴化硼反应制成了一种十分稳定的复合物,其中含溴1.99%,相当于每克复合物小球含7.91×10^-5mol BBr₃。它对缩醛、缩酮、酯化等有机合成反应有较好的催化效能,还可重复使用,是一种制备简单、使用方便的新型高分子载体 Lewis 酸多相催化剂。更多还原

【Abstract】 The beads of polystyrene-divinylbenzene（5%） copolymer are combinedwith boron tribromide in chloroform to form a stable complex containing 1.99% ofbromine which correspond to 7.91×10^-5 mol BBr₃/1g complex beads.The complexbeads can be used to catalyze various organic reactions such as acetalization,ketal for-mation,esterifications,etherification and the Friedel-Crafts alkylations,some of themare in high yields.The complex as a polymer-supported Lewis acid catalyst is easy toproduce and convenient to use,also can be reused.更多还原