Reductive alkylation of active methylene compounds with carbonyl derivatives, calcium hydride and a heterogeneous catalyst
作者:Carole Guyon、Marie-Christine Duclos、Marc Sutter、Estelle Métay、Marc Lemaire
DOI:10.1039/c5ob00849b
日期:——
A one-pot two-step reaction (Knoevenagel condensation – reduction of the double bond) has been developed using calcium hydride as a reductant in the presence of a supported noble metal catalyst. The reaction between carbonyl compounds and active methylene compounds such as methylcyanoacetate, 1,3-dimethylbarbituric acid, dimedone and the more challenging dimethylmalonate, affords the corresponding
在负载型贵金属催化剂存在下,使用氢化钙作为还原剂,开发了一种一锅两步反应(Knoevenagel缩合-双键还原)。羰基化合物与活性亚甲基化合物(例如氰基乙酸甲酯,1,3-二甲基巴比妥酸,二甲酮和更具挑战性的丙二酸二甲酯)之间的反应可提供中等至良好收率(最高83%)的相应单烷基化产物,且起始羰基化合物的减少极少化合物。