Synthesis 2006(11): 1829-1835  
DOI: 10.1055/s-2006-942358
PAPER
© Georg Thieme Verlag Stuttgart · New York

Diastereoselective Synthesis of trans β-Lactams on Soluble Polymer Support

Shan-Zhong Jian, Qing Yuan, Yan-Guang Wang*
Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. of China
Fax: +86(571)87951512; e-Mail: orgwyg@zju.edu.cn;
Further Information

Publication History

Received 14 November 2005
Publication Date:
05 May 2006 (online)

Abstract

Liquid-phase synthesis of trans b-lactams was accomplished through both PEG-supported imine and PEG-bound auxiliary methodologies. The trans diastereoselectivity is explained by a chair-like transition state involving the imine and the Z-enolate.