作者:Jiajia Chen、Man Xu、Subeen Yu、Yuanzhi Xia、Sunwoo Lee
DOI:10.1021/acs.orglett.0c00485
日期:2020.3.20
A nickel-catalyzed Claisen condensation reaction between two amides, where one possesses an α-proton, for the synthesis of β-ketoamides was developed. Ni(glyme)Cl2 and terpyridine serve as the active catalysts in the presence of Mn and LiCl. N,N-Methylphenyl and N,N-diphenyl benzamide derivatives react with cyclic and noncyclic amides to give their corresponding β-ketoamides in moderate to good yields
开发了一种镍催化的两种酰胺之间的克莱森缩合反应,其中一种酰胺具有α质子,可以合成β-酮酰胺。在Mn和LiCl存在下,Ni(glyme)Cl2和三联吡啶用作活性催化剂。N,N-甲基苯基和N,N-二苯基苯甲酰胺衍生物与环状和非环状酰胺反应,以中等至良好的产率得到它们相应的β-酮酰胺。另外,DFT计算表明还原消除是速率决定的步骤。