S<sub>N</sub>2 Ring Opening of β-Lactones: An Alternative to Catalytic Asymmetric Conjugate Additions
作者:Scott G. Nelson、Zhonghui Wan、Magdalena A. Stan
DOI:10.1021/jo025519n
日期:2002.7.1
Merging catalyticasymmetricacylhalide-aldehydecyclocondensation (AAC) reactions with ensuing Grignard-mediated ring opening of the derived enantiomerically enriched beta-lactones is presented as a generally useful asymmetric synthesis of beta-disubstituted carboxylic acids. Enantiomerically enriched beta-lactones are subject to efficient S(N)2 ring opening with a variety of copper-modified alkyl