高分子路易斯酸催化剂——阳离子交换树脂四氯化锡复合物

A Polymer Lewis Acid Catalyst——Cation Exchange Resin SnCl_4 Complex

大孔强酸性聚苯乙烯系阳离子交换树脂与SnCl_4在CS_2中反应可生成一种稳定的高分子路易斯酸催化剂.其制备简单、易分离.这种催化剂不怕水,对酯化、缩醛、缩酮、醚化及付氏烷基化反应具有较好的催化作用,且催化性能稳定,至少可重复使用10次.

A macroporous cation exchange resin-supported SnCl4 was synthesized in CS2 to form a stable complex of containing 8. 4% of Sn. The SnCl4 complexed in the ion exchange resin is resistant to water and air. The polymer Lewis acid complex catalyst can be used to catalyze many organic reactions with high yield, such as esterification, acetalization and ketal formation. The catalyst is also effective for Friedel-Crafts alkylation reaction. The title catalyst can be reused at least 10 times.