Stereocontrolled synthesis of either trans- or cis-trimethylsilylvinyloxiranes via sulfonium ylides
作者:Yong-Gui Zhou、An-Hu Li、Xue-Long Hou、Li-Xin Dai
DOI:10.1039/cc9960001353
日期:——
trans- or cis-β-Trimethylsilylvinyloxiranes are prepared by the reaction of aldehydes with a 3-trimethylsilylated dimethylsulfonium allylide under phase-transfer conditions or with a preformed 3-trimethylsilylated diphenylsulfonium allylide in the presence of LiBr, both in excellent yields and high stereoselectivity.