基于C-H键活化的铜催化二苄胺氧化酰胺化反应(英文)

Copper-catalyzed oxidative amidation of dibenzylamines via C–H bond activation

基于铜催化的C-H键活化构建了一类高效的二苄胺氧化酰基化生成N-苄基苯甲酰胺的反应. 该反应使用CuBr作为催化剂,二乙酸碘苯作为氧化剂, 在温和条件下生成两种酰胺, 总产率最高可达92.0%. CuBr催化剂价廉易得, 催化活性高. 同时这也是首次使用二乙酸碘苯作为氧化剂, 通过二苄胺的直接氧化酰基化反应合成N-苄基苯甲酰胺.

A new method has been developed for the oxidative amidation of dibenzylamines to construct N-benzylbenzamides via C-H bond activation. This new method allows for the formation of two amide products from a single dibenzylamine starting material in good yields using CuBr as a catalyst and diacetoxyiodobenzene as an oxidant under mild reaction conditions. The catalyst system performed efficiently, and this study represents the first reported use of diacetoxyiodobenzene as an oxidant for the oxidative amidation of dibenzylamines to the corresponding N-benzylbenzamides.