Efficient construction of indole rings from 2-ethynylaniline derivatives catalyzed by copper(II) salts and its application to the tandem cyclization reactions
作者:Kou Hiroya、Shin Itoh、Mika Ozawa、Yuichi Kanamori、Takao Sakamoto
DOI:10.1016/s0040-4039(01)02396-6
日期:2002.2
The efficient cyclization reactions of the N-methanesulfonyl or N-ethoxycarbonyl derivatives of 2-ethynylanilines, functionalized on the benzene ring and/or the acetylene terminal into indoles catalyzed by either Cu(OTf)2 or Cu(OAc)2 are accomplished. The application of this reaction to the tandem cyclization reaction is also described.
通过Cu(OTf)2或Cu(OAc)2催化在苯环和/或乙炔末端官能化的2-乙炔基苯胺的N-甲磺酰基或N-乙氧基羰基衍生物的有效环化反应得以完成。还描述了该反应在串联环化反应中的应用。