Asymmetric, Organocatalytic, Three-Step Synthesis of α-Hydroxy-(<i>E</i>)-β,γ-unsaturated Esters
作者:Lindsey C. Hess、Gary H. Posner
DOI:10.1021/ol100615j
日期:2010.5.7
efficient and enantiocontrolled three-step synthesis of α-hydroxy-(E)-β,γ-unsaturated esters is reported. Enantioenriched α-selenyl aldehydes, prepared in one step by asymmetric, organocatalytic α-selenylation of aldehydes, were directly subjected to a Wittig reaction followed by allylic selenide to selenoxide oxidation and final spontaneous [2,3]-sigmatropicrearrangement to yield the target compounds in 43−65%