Highly (<i>E</i>)-Selective Wadsworth−Emmons Reactions Promoted by Methylmagnesium Bromide
作者:Timothy D. W. Claridge、Stephen G. Davies、James A. Lee、Rebecca L. Nicholson、Paul M. Roberts、Angela J. Russell、Andrew D. Smith、Steven M. Toms
DOI:10.1021/ol802212e
日期:2008.12.4
An experimentally simple protocol for the very highly (E)-selective Wadsworth-Emmons reaction [(E):(Z) selectivities in excess of 180:1 in some cases] of a range of straight-chain and branched aliphatic, substituted aromatic, and base-sensitive aldehydes via reaction with an alkyl diethylphosphonoacetate and MeMgBr is reported.
对一系列直链和支链脂族,取代芳族化合物进行非常高度(E)选择性的Wadsworth-Emmons反应[(E):( Z)选择性在某些情况下超过180:1的反应)的实验简单方法,报道了通过与烷基二乙基膦酰基乙酸酯和MeMgBr反应生成的对碱敏感的醛。