期刊
CATALYSIS COMMUNICATIONS
卷 9, 期 10, 页码 2013-2017出版社
ELSEVIER
DOI: 10.1016/j.catcom.2008.03.037
关键词
one-pot condensation; homogeneous catalysis; imidazole; benzil; ammonium acetate
A simple, efficient and eco-friendly procedure has been developed using tetrabutylammonium bromide (TBAB, 10 mol%) as novel neutral ionic liquid catalyst for the synthesis of 2,4,5-triaryl imidazoles by a three-component, one-pot condensation of benzil, aryl aldehydes and ammonium acetate in refluxing isopropanol. The present methodology offers several advantages such as excellent yields, shorter reaction times (15-30 min) and environmentally benign milder reaction conditions: moreover, the catalyst in isoproparrol solvent exhibited reusable activity. (C) 2008 Elsevier B.V. All rights reserved.
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