Conjugate addition of unactivated thiols to α,β-unsaturated ketones catalyzed by a bifunctional rhenium(V)–oxo complex
作者:Allan Peng、Ross Rosenblatt、Kristine Nolin
DOI:10.1016/j.tetlet.2012.03.075
日期:2012.5
found to be an efficient bifunctional catalyst for the 1,4-addition of thiols to α,β-unsaturated ketones. The addition of thiophenol derivatives and alkyl thiols proceeds under mild reaction conditions without pre-activation of the thiol or exogenous base. Reactions of aryl, alkyl, and cyclic enones produce the corresponding β-sulfanyl ketones in good to excellent yield.
已经发现,ReOCl 3(OPPh 3)(S(CH 3)2)是一种高效的双官能催化剂,可将硫醇1,4-加成到α,β-不饱和酮上。硫酚衍生物和烷基硫醇的添加在温和的反应条件下进行而无需硫醇或外源碱的预活化。芳基,烷基和环状烯酮的反应以良好或优异的产率产生相应的β-硫烷基酮。