Synthesis 2007(3): 412-416  
DOI: 10.1055/s-2006-958965
PAPER
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Iminoquinones from Anilines Using IBX in DMSO

Heng Chang Ma, Xuan Zhen Jiang*
Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. of China
Fax: +86(571)87951611; e-Mail: chejiang@zju.edu.cn;
Further Information

Publication History

Received 14 September 2006
Publication Date:
21 December 2006 (online)

Abstract

An efficient and convenient procedure for the preparation of 2-amino-(1,4)-benzoquinone-4-phenylimides from anilines using a λ5-iodane-1-hydroxy-1,2-benziodoxol-3(1H)-one-1-oxide (IBX) oxidation in dimethyl sulfoxide is described. This protocol offers a general approach to compounds consisting of an iminoquinone moiety with a wide range of functional groups. A single electron transfer (SET) process was postulated to explain the oxidation pathway.