1. School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran;2. Institute of Organic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
Abstract:
A one-pot method for the regioselective dimerization and cyanation of indoles has been developed. The reaction uses safe and nontoxic K4[Fe(CN)6]·3H2O as the cyanating agent which introduces selectively a cyano group into the 3-position of biindoles with high efficiency.