Synthesis 2004(13): 2094-2098  
DOI: 10.1055/s-2004-829199
PAPER
© Georg Thieme Verlag Stuttgart · New York

Polystyrene-Supported α-Seleno Carbanions: Efficient Reagents for Highly Stereocontrolled Syntheses of Vinylphosphonates and Vinylsulfones

Wei Ming Xua, E Tanga, Xian Huang*a,b
a Department of Chemistry, Zhejiang University (Campus Xixi), Hangzhou, 310028, P. R. China
Fax: +86(571)88807077; e-Mail: huangx@mail.hz.zj.cn;
b Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, P. R. China
Further Information

Publication History

Received 26 March 2004
Publication Date:
13 August 2004 (online)

Abstract

Polystyrene-supported selenomethyl-phosphonate and polystyrene-supported selenomethyl-sulfonates have been prepared. These novel reagents were treated with LDA (or n-BuLi) to produce polystyrene-supported α-seleno carbanions, which reacted with alkyl halides, followed by stereospecific selenoxide syn-elimination to give E-vinylphosphonates and E-vinylsulfones respectively. And also these novel polymer reagents can be regenerated and reused.