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Journal of Chemistry
Volume 2013, Article ID 496413, 5 pages
Research Article

Boric Acid Catalyzed Convenient Synthesis of Benzimidazoles in Aqueous Media

Department of Chemistry, Payame Noor University, Tehran 19395-4697, Iran

Received 31 May 2013; Accepted 11 July 2013

Academic Editor: Antreas Afantitis

Copyright © 2013 Mohammad Reza Poor Heravi and Marjan Ashori. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Synthesis of benzimidazoles has been developed by the o-phenylenediamine with aldehydes using boric acid an efficient catalyst under mild reaction conditions in aqueous media. The product is applicable to aryl and heteroaryl aldehydes. This reaction led to the formation of benzimidazoles new derivatives in good yields. The FT-IR, 19F-NMR, 1H-NMR, 13C-NMR spectra and elemental analysis confirm the structure of compounds.