PAPER	Synthesis 2007: 675-678   DOI: 10.1055/s-2007-965922
© Georg Thieme Verlag Stuttgart · New York
A Rapid and Efficient Synthesis of Benzimidazoles Using Hypervalent Iodine as Oxidant
Li-Hua Du, Yan-Guang Wang*
Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. of China Fax: +86(571)87951512; e-Mail: orgwyg@zju.edu.cn;
Received 16 October 2006

Abstract

Various 2-arylbenzimidazoles were synthesized from phenylenediamines and aldehydes via a one-step process using hypervalent iodine as an oxidant. The salient features of this method include mild conditions, short reaction times (3-5 min), high yields, and simple procedure.

Key words

benzimidazoles - iodobenzene diacetate (IBD) - oxidations - o-phenylenediamines