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Paper | Regular issue | Vol 71, No. 1, 2007, pp.135-140
Published online, 5th December, 2006
DOI: 10.3987/COM-06-10920
Selective Synthesis of 2-Aryl-1-arylmethyl-1H-1,3-benzimidazoles Promoted by Ionic Liquid

Huiqiang Ma, Yulu Wang,* Jianping Li, and Jinye Wang*

*College of Chemistry and Environmental Science, Henan Normal University, Xinxiang, 453007, Henan, China


Ionic liquid is used to promote the condensation of o-phenylenediamine with aldehydes and afford corresponding 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles efficiently. The absence of a catalyst and recyclability on the non-volatile IL make this an environment friendly methodology for selective synthesis of 2-aryl-1-arylmethyl-1H-1,3- benzimidazoles.