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Asymmetric Meerwein-Ponndorf-Verley reduction catalyzed by a new type of chiral binaphthol-samarium complex

✍ Scribed by Ding Zong-Biao; Cheng Ke-Jun; Wu Shi-Hui

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 372 KB
Volume: 14
Category: Article
ISSN: 0256-7660
DOI: 10.1002/cjoc.19960140612

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✦ Synopsis

Abstract

A new type of chiral 1,1′‐binaphthol(BINOL) derived samarium complex, prepared from (R)‐or (S)‐BINOL and SmCl~3~, serves as an enantioselective catalyst for the Meerwein‐Ponndorf‐Verley (MPV) reduction in the presence of Molecular Sieves 4Å(MS 4Å). Moderate enantioselectivity was obtained. Kinetic studies show slight decrease of the enantiomeric excess with the conversion.

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