Synthesis of 1-aryl indoles via coupling reaction of indoles and aryl halides catalyzed by CuI/metformin
作者:Hu Chen、Min Lei、Lihong Hu
DOI:10.1016/j.tet.2014.06.080
日期:2014.9
Ullmann-type C-N coupling reaction has been developed for the synthesis of 1-aryl indole derivatives by indoles and aryl halides in the presence of CuI/metformin (CuI/Met) in DMF. This method is very easy, rapid, and high yielding reaction for the synthesis of 1-aryl indoles. In particular, the metformin, which is used as ligand, is inexpensive and nontoxic that is considered to be relatively environmentally benign. (C) 2014 Elsevier Ltd. All rights reserved.