Expeditious and novel synthesis of α-hydroxyesters via rhodium–NHC catalyzed arylation of ethyl glyoxalate
作者:Carolina S. Marques、Anthony J. Burke
DOI:10.1016/j.tet.2012.05.129
日期:2012.9
The rhodium–NHC catalyzed arylation reaction of ethyl glyoxalate with aryl and alkyl boronic acids provides an efficient method for the synthesis of α-hydroxyesters. A wide range of α-hydroxyesters (up to 12) were prepared in good to excellent yields. KOtBu was the base of choice, along with tert-amyl alcohol as the solvent. As far as we are aware, this is the first report of this catalytic arylation
乙二醛草酸乙酯与芳基和烷基硼酸的铑-NHC催化的芳基化反应为合成α-羟基酯提供了一种有效的方法。制备了多种α-羟基酯(最多12种),收率良好至极佳。KO吨卜是选择的基础上,沿与叔戊醇作为溶剂。据我们所知,这是使用这种特定底物类型的铑-NHC催化剂进行的这种催化芳基化的首次报道。