Copper-catalyzed intramolecular oxidative amination of enaminone C–H bond for the synthesis of imidazo[1,2- a ]pyridines
作者:Jie-Ping Wan、Deqing Hu、Ying Liu、Luyao Li、Chengping Wen
DOI:10.1016/j.tetlet.2016.05.064
日期:2016.6
The intramolecular C–N bond forming cross coupling reactions on the enaminones has been achieved for the synthesis of imidazole[1,2-a]pyridines via copper-catalyzed C(sp2)–H amination. This protocol provides a new route for the synthesis of 2-unsubstituted imidazole[1,2-a]pyridines via easily available starting materials.
通过铜催化的C(sp 2)-H氨基化合成咪唑[1,2- a ]吡啶,已经实现了在烯胺上形成分子内C–N键的交叉偶联反应。该方案为通过容易获得的起始原料合成2-未取代的咪唑[1,2- a ]吡啶提供了一条新途径。