A kinetically controlled direct aldol addition of α-chloro thioesters via soft enolization
作者:Rachel J. Alfie、Ngoc Truong、Julianne M. Yost、Don M. Coltart
DOI:10.1016/j.tetlet.2016.11.010
日期:2017.1
direct aldol addition to aldehydes in the presence of MgBr2·OEt2 and i-Pr2NEt. At −78 °C the reaction proceeds in a kinetically controlled manner giving good diastereoselectivity. Significantly, the transformation is applicable to both enolizable and nonenolizable aldehydes. Moreover, excellent stereoselectivity results when a chiral nonracemic α-hydroxy aldehyde derivative is used. To our knowledge, this
Direct carbon–carbon bond formation via soft enolization: aldol addition of α-halogenated thioesters
作者:Julianne M. Yost、Rachel J. Alfie、Emily M. Tarsis、Insun Chong、Don M. Coltart
DOI:10.1039/c0cc02345k
日期:——
α-Halo thioesters undergo soft enolization and syn-selective direct aldol addition to aldehydes in the presence of MgBr2·OEt2 and i-Pr2NEt to produce α-halo-β-hydroxy thioesters.