Synthesis 2009(9): 1431-1436  
DOI: 10.1055/s-0028-1088160
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Copper-Catalyzed Tandem C-N Bond Formation Reaction: Selective Synthesis of 2-(Trifluoromethyl)benzimidazoles

Mu-Wang Chen, Xing-Guo Zhang*, Ping Zhong, Mao-Lin Hu
College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, P. R. of China
Fax: +86(577)88368607; e-Mail: zxg@wzu.edu.cn;
Further Information

Publication History

Received 9 December 2008
Publication Date:
25 March 2009 (online)

Abstract

A highly practical method for the synthesis of fluorinated benzimidazoles was developed by CuI/TMEDA-catalyzed cross-coupling reaction of N-(2-haloaryl)trifluoroacetimidoyl chlorides with primary amines. The present double amination process tolerates the presence of Cl, Br, or I substituent at the 2-position of the phenyl group.

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CCDC-705003 contains the supplementary crystallographic data, which is available free of charge via www.ccdc.cam.ac.uk.