Synthesis of 1
<i>H</i>
‐Pyrrolo[1,2‐
<i>a</i>
]indoles
<i>via</i>
Lewis Acid‐Catalyzed Annulation of Propargylic Alcohols with 2‐Ethynylanilines
作者:Li‐Juan Du、Ya‐Ping Han、Hong‐Yu Zhang、Yuecheng Zhang、Jiquan Zhao、Yong‐Min Liang
DOI:10.1002/adsc.201901409
日期:2020.3.17
A novel highly efficient, environmentally benign Lewis acid‐catalyzed, and protection‐free protocol for the construction of valuable polycyclic products bearing a 1H‐pyrrolo[1,2‐a]indole scaffold is described, starting from readily available propargylic alcohols and 2‐ethynylanilines. The one‐pot transformation entails the cleavage of one C−O bond, and the construction of two C−N bonds and one C−C
描述了一种新型的高效,环境友好的路易斯酸催化且无保护的方案,用于构建带有1 H-吡咯并[1,2- a ]吲哚骨架的有价值的多环产物,从容易获得的炔丙醇和2开始乙炔基苯胺。一锅转换需要裂解一个C-O键,两个C-N键和一个C-C双键。这种独特的操作简单的方法是在温和条件下和空气中进行的,产生的水是唯一的副产物。它具有可伸缩性,并显示出良好的功能组兼容性和广泛的适用范围。