A conceptually novel approach for the modular and divergent synthesis of highly functionalized indoles via trifluoroacetic acid-promoted amino-Claisen rearrangement is reported. This metal-free protocol could be performed at room temperature with wide functional group tolerance. The substitution type of the resultant indoles could be easily adjusted by the variation of the starting propargyl amines
报道了一种通过
三氟乙酸促进的
氨基-克莱森重排模块化和发散合成高度功能化
吲哚的概念性新方法。这种无
金属协议可以在室温下进行,具有广泛的官能团耐受性。所得
吲哚的取代类型可以很容易地通过起始
炔丙胺的变化来调整。通过简单的实验操作,所得产物可以很容易地转化为不同附加值的
吲哚衍
生物。