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Synthesis 2006(11): 1829-1835
DOI: 10.1055/s-2006-942358
DOI: 10.1055/s-2006-942358
PAPER
© Georg Thieme Verlag Stuttgart · New York
Diastereoselective Synthesis of trans β-Lactams on Soluble Polymer Support
Further Information
Received
14 November 2005
Publication Date:
05 May 2006 (online)
Publication History
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.
Key words
lactam - PEG - Reformatsky reaction - resin-capture-release - Z-enolate
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