Nitroxyl‐Radical‐Catalyzed Oxidative Coupling of Amides with Silylated Nucleophiles through N‐Halogenation
作者:Katsuhiko Moriyama、Masako Kuramochi、Kozo Fujii、Tsuyoshi Morita、Hideo Togo
DOI:10.1002/anie.201607223
日期:2016.11.14
(EWG) and silylated nucleophiles was developed to furnish coupling products in high yields, thus opening up new frontiers in organocatalyzed reactions. This reaction proceeded through the activation of N‐halogenated amides by a nitroxyl‐radical catalyst, followed by carbon–carbon coupling with silylated nucleophiles. Studies of the reaction mechanism indicated that the nitroxyl radical activates N‐halogenated
带有N保护性吸电子基团(EWG)的胺与甲硅烷基化亲核试剂之间的硝酰-自由基催化的氧化偶联反应得以开发,可提供高收率的偶联产物,从而为有机催化反应开辟了新的领域。该反应通过硝酰自由基催化剂活化N卤代酰胺,然后与甲硅烷基化的亲核试剂进行碳-碳偶合。对反应机理的研究表明,硝酰基自由基可活化由N-EWG保护的酰胺和卤化试剂生成的N-卤代酰胺,生成相应的亚胺。