Catalytic, Asymmetric α-Fluorination of Acid Chlorides: Dual Metal−Ketene Enolate Activation
作者:Daniel H. Paull、Michael T. Scerba、Ethan Alden-Danforth、Leland R. Widger、Thomas Lectka
DOI:10.1021/ja807792c
日期:2008.12.24
In this Communication, we disclose a catalytic, highly enantioselective (up to >99% ee) alpha-fluorination of acid chlorides to produce a variety of optically active carboxylic acid derivativesfrom readily accessible and commercially available starting materials. The reaction depends on dually activated ketene enolates generatedfrom two discrete catalysts--a chiral nucleophile and an achiral transition