An efficient synthesis of 3-(indol-3-yl)quinoxalin-2-ones with TfOH-catalyzed Friedel–Crafts type coupling reaction in air
作者:Yan-Yan Han、Zhi-Jun Wu、Xiao-Mei Zhang、Wei-Cheng Yuan
DOI:10.1016/j.tetlet.2010.02.031
日期:2010.4
synthetic approach to access a variety of 3-(indol-3-yl)quinoxalin-2-ones from various quinoxalin-2-ones and very wide scope of indoles through TfOH-catalyzed Friedel–Crafts type coupling reaction in DMF has been developed. Only 10 mol % Brønsted acid as a catalyst, air as an oxidizer, and very wide range of substrates are the prominent advantages of this method.
一种有效的一锅合成方法,可通过TfOH催化的Friedel-Crafts型偶联反应从各种喹喔啉-2-酮中获得各种3-(吲哚-3-基)喹喔啉-2-酮和非常广泛的吲哚。已经开发了DMF。该方法的显着优势是仅10 mol%的布朗斯台德酸作为催化剂,空气作为氧化剂,以及种类繁多的底物。