An enantioselective nucleophilic addition of α,β-unsaturated trifluoromethylketones catalyzed by l-proline derivatives
作者:Dehui Zhang、Chengye Yuan
DOI:10.1016/j.tet.2007.12.035
日期:2008.3
unexpected enantioselective 1,2-aldol reaction of acetone with α,β-unsaturated trifluoromethylketone catalyzed by l-proline derivative was described. The absolute configuration of the resulting chiral product was assigned based on a single crystal X-ray diffraction analysis. Structure–reactivity study of this organocatalytic system was briefly discussed. A reaction mechanism was tentatively postulated
描述了丙酮与1-脯氨酸衍生物催化的α,β-不饱和三氟甲基酮的意外的对映选择性1,2-醛醇缩合反应。基于单晶X射线衍射分析确定所得手性产物的绝对构型。简要讨论了该有机催化体系的结构反应性研究。暂时假定了反应机理。