Polystyrene-supported pyridinium chloroaluminate ionic liquid as a new heterogeneous Lewis acid catalyst for selective synthesis of benzimidazoles

被引：10

作者：

Boroujeni, Kaveh Parvanak ^{[1
]}

Zhianinasab, Ashkan ^{[1
]}

Jafarinasab, Mina ^{[1
]}

机构：

[1] Shahrekord Univ, Dept Chem, Shahrekord 115, Iran

来源：

JOURNAL OF THE SERBIAN CHEMICAL SOCIETY | 2013年 / 78卷 / 02期

关键词：

ionic liquids; chloroaluminate salts; heterogeneous catalysis; polymer-supported ionic liquids; benzimidazoles; ONE-POT SYNTHESIS; NUCLEOPHILIC-SUBSTITUTION REACTIONS; EFFICIENT; AGENTS;

D O I：

10.2298/JSC120401089P

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polystyrene-supported pyridinium chloroaluminate ionic liquid was prepared from the reaction of a Merrifield resin with pyridine followed by reaction with aluminium chloride. This catalyst was used as a new chemoselective Lewis acid catalyst for the exclusive synthesis of 2-substituted benzimidazoles from the reaction of aldehydes with o-phenylenediamines. The catalyst was stable (as a benchtop catalyst) and could easily be recovered and re-used without appreciable change in its efficiency.

引用

页码：155 / 164

页数：10

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