A facile and practical one-pot synthesis of multisubstituted 2-aminothiophenes via imidazole-catalyzed Gewald reaction
作者:Xian-Gui Huang、Jia Liu、Jiangmeng Ren、Tao Wang、Weidong Chen、Bu-Bing Zeng
DOI:10.1016/j.tet.2011.06.061
日期:2011.8
A simple and efficient procedure was developed for the synthesis of multisubstituted 2-aminothiophene derivatives. In the presence of catalytic amount of imidazole, ketones or aldehydes, dicyanomethane and elemental sulfur were converted into the corresponding 2-aminothiophene derivatives in moderate to high yields in DMF at 60 degrees C. (C) 2011 Elsevier Ltd. All rights reserved.