VO(acac)_2 catalyzed condensation of o-phenylenediamine with aromatic carboxylic acids/aldehydes under microwave radiation affording benzimidazoles  

作　　者：Madhudeepa Dey Krishnajyoti Deb Siddhartha Sankar Dhar 

机构地区：[1]Department of Chemistry,National Institute of Technology,Silchar,Silchar 788010,Assam,India

出　　处：《Chinese Chemical Letters》2011年第3期296-299,共4页中国化学快报（英文版）

基　　金：the Department of Science and Technology(DST),New Delhi,Government of India for providing financial support(SR/FTP/CS-100/2007)

摘　　要：Vanadyl acetylacetonate,VO（acac）_2,has been found to be very effective catalyst for synthesis of a variety of benzimidazoles under solvent-free condition.The methodology involves the exposure of a mixture of o-phenylenediamine and a selected aromatic carboxylic acid/aldehyde to microwave radiation without the use of any solvent or supporting agents.The benzimidazoles were obtained in quick time with high yields.Vanadyl acetylacetonate,VO（acac）_2,has been found to be very effective catalyst for synthesis of a variety of benzimidazoles under solvent-free condition.The methodology involves the exposure of a mixture of o-phenylenediamine and a selected aromatic carboxylic acid/aldehyde to microwave radiation without the use of any solvent or supporting agents.The benzimidazoles were obtained in quick time with high yields.

关 键 词：Vanadyl acetylacetonate O-PHENYLENEDIAMINE Microwave irradiation SOLVENT-FREE 

分 类 号：O643.36[理学—物理化学]