Phosphine-Mediated Stereoselective Reductive Cyclopropanation of α-Substituted Allenoates with Aromatic Aldehydes
作者:Silong Xu、Lili Zhou、Renqin Ma、Haibin Song、Zhengjie He
DOI:10.1021/ol902747c
日期:2010.2.5
cyclopropanation between α-substituted allenoates2 and aldehydes 1 is described. It represents a new member of the allene-based annulations, which provides facile and efficient access to highly functionalized cyclopropanes 3 from simple and readily available starting materials. It also unveils an unprecedented reactivity pattern of allenoates with aldehydes.