for the synthesis of 2-unsubstituted indolesand azaindoles has been developed by the palladium-catalyzed directannulation of electron-poor O-chloro/bromoanilines and O-chloroaminopyridines with aldehydes.Coupled with the previous results of Jia and Zhu, this allows rapidaccess to a variety of 2-unsubstituted indoles and azaindoles startingfrom simple and easily accessible precursors.
通过
钯催化的贫电子邻
氯/
溴苯胺和邻
氯氨基吡啶与醛的直接环化,开发了一种合成 2-未取代
吲哚和氮杂
吲哚的实用工艺。再加上 Jia 和 Zhu 先前的结果,这可以快速获得从简单易得的前体开始,到各种 2-未取代的
吲哚和氮杂
吲哚。