Polystyrene-supported chloroaluminate ionic liquid as a new heterogeneous Lewis acid catalyst for Knoevenagel condensation  

作　　者：Kaveh Parvanak Boroujeni Mina Jafarinasab 

机构地区：[1]Department of Chemistry,Shahrekord University,Shahrekord(115),Iran

出　　处：《Chinese Chemical Letters》2012年第9期1067-1070,共4页中国化学快报（英文版）

基　　金：the partial support of this study by the Shahrekord University Research Council

摘　　要：Non-hygroscopic polystyrene-supported chloroaluminate ionic liquid was prepared from the reaction of Merrifield resin with 1- methylimidazole followed by reaction with aluminum chloride. This Lewis acidic ionic liquid is environmentally friendly heterogeneous catalyst for the Knoevenagel condensation of aromatic and aliphatic aldehydes with ethyl cyanoacetate. The catalyst is sta^le （as a bench top catalyst） and reusable.Non-hygroscopic polystyrene-supported chloroaluminate ionic liquid was prepared from the reaction of Merrifield resin with 1- methylimidazole followed by reaction with aluminum chloride. This Lewis acidic ionic liquid is environmentally friendly heterogeneous catalyst for the Knoevenagel condensation of aromatic and aliphatic aldehydes with ethyl cyanoacetate. The catalyst is sta^le （as a bench top catalyst） and reusable.

关 键 词：Ionic liquids Imidazolium chloroaluminate salts Polymer-supported ionic liquids Knoevenagel condensation 

分 类 号：O631.3[理学—高分子化学]