Synthesis of substituted quinolines by the electrophilic cyclization of n-(2-alkynyl)anilines
作者:Xiaoxia Zhang、Tuanli Yao、Marino A. Campo、Richard C. Larock
DOI:10.1016/j.tet.2009.12.012
日期:2010.2
A wide variety of substituted quinolines are readily synthesized under mild reaction conditions by the 6-endo-dig electrophilic cyclization of N-(2-alkynyl)anilines by ICl, I2, Br2, PhSeBr, and p-O2NC6H4SCl. The reaction affords 3-halogen-, selenium- and sulfur-containing quinolines in moderate to good yields in the presence of various functional groups. Analogous quinolines bearing a hydrogen in the
通过 ICl、I 2、Br 2、PhSeBr 和p -O 2 NC 6 H对N -(2-炔基)苯胺进行6-内位亲电环化,可以在温和的反应条件下轻松合成各种取代的喹啉。4 SCl。该反应在各种官能团存在下以中等至良好的产率提供含3-卤素、硒和硫的喹啉。通过Hg(OTf) 2催化这些相同的炔基苯胺的闭环,已经合成了在3-位带有氢的类似喹啉。