Synthesis 2007(13): 1961-1969  
DOI: 10.1055/s-2007-983735
PAPER
© Georg Thieme Verlag Stuttgart · New York

InCl3-Catalyzed Propargylation of Indoles and Phenols with Propargylic Acetates: Application to the Syntheses of Benzofurans and Naphthofurans

Zhe Liua,b, Li Liu*a, Zahid Shafiqa,b, Yan-Chao Wua,b, Dong Wanga, Yong-Jun Chen*a
a Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory for Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China
Fax: +86(10)62554449; e-Mail: lliu@mail.iccas.ac.cn; e-Mail: yjchen@mail.iccas.ac.cn;
b Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100080, P. R. China
Further Information

Publication History

Received 16 March 2007
Publication Date:
18 June 2007 (online)

Abstract

InCl3-catalyzed propargylation of indoles and phenols was developed. A strategy combining propargylation with intramolecular cyclization was used to easily prepare 2-benzyl-3-arylbenzofurans and -naphthofurans, which are important pharmaceutical intermediates.