Sulfoxide-Controlled S<sub>N</sub>2‘ Displacements between Cyanocuprates and Epoxy Vinyl Sulfoxides<sup>1</sup>
作者:Joseph P. Marino、Laura J. Anna、Roberto Fernández de la Pradilla、María Victoria Martínez、Carlos Montero、Alma Viso
DOI:10.1021/jo000468k
日期:2000.10.1
Two short and convergentroutes have been devised for the preparation of enantiomerically pure acyclic epoxy vinyl sulfoxides. These substrates undergo highly regio- and stereoselective S(N)2' displacements with lithium cyanocuprates to give alpha'-alkylated, gamma-oxygenated Z alpha,beta-unsaturated sulfoxides in moderate to good yields and with good to excellent diastereoselectivities. The absolute