InBr3 catalyzed three-component reactions of an aryldiazoacetate, an alcohol, and a carbonyl compound
作者:Jingjing Ji、Xia Zhang、Liqing Jiang、Wenhao Hu
DOI:10.1016/j.tetlet.2011.11.005
日期:2012.1
InBr3 promoted three-component reactions of an aryldiazoacetate, an alcohol, and an electron deficient carbonyl compound gave α,β-dihydroxyl acid derivatives in good yield with high diastereoselectivity. The reaction is proposed through a protic oxonium ylide trapping process. The reaction mechanism for the formation of the protic oxonium ylide via Lewis acid InBr3 catalyzed diazo decomposition is
InBr 3促进了重氮芳基乙酸酯,醇和缺电子的羰基化合物的三组分反应,从而以高收率和高非对映选择性提供了α,β-二羟基酸衍生物。通过质子氧鎓叶立德捕获工艺提出了该反应。通过乙烯基阳离子中间体,提出了通过路易斯酸InBr 3催化的重氮分解形成质子化氧鎓叶立德的反应机理。