Synthesis 2006(6): 1016-1020  
DOI: 10.1055/s-2006-926350
PAPER
© Georg Thieme Verlag Stuttgart · New York

Stereoselective Aminobromination of Alkylidenecyclopropanes with TsNH2 and NBS as Nitrogen and Bromine Sources: A Simple Access to γ-Bromohomoallylic Sulfonamides

Xian Huang*a,b, Wei-Jun Fua
a Department of Chemistry, Zhejiang University (Campus Xixi), Hangzhou 310028, P. R. of China
b State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
e-Mail: huangx@mail.hz.zj.cn;
Further Information

Publication History

Received 12 September 2005
Publication Date:
27 February 2006 (online)

Abstract

A convenient and efficient method for aminobromination of alkylidenecyclopropanes is reported. This is exemplified in the stereoselective preparation of N-[(Z)-3-bromobut-3-en-1-yl]-p-toluenesulfonamides by using p-toluenesulfonamide (TsNH2) and N-bromosuccinimide (NBS) as nitrogen and bromine sources, respectively.