Introducing tetramethylurea as a new methylene precursor: a microwave-assisted RuCl<sub>3</sub>-catalyzed cross dehydrogenative coupling approach to bis(indolyl)methanes
作者:Mohit L. Deb、Paran J. Borpatra、Prakash J. Saikia、Pranjal K. Baruah
DOI:10.1039/c6ob02671k
日期:——
Herein we report a microwave assisted Ru(III)/TBHP-mediated reaction of indoles with tetramethylurea (TMU) synthesizing symmetrical as well as unsymmetrical bis(indolyl)methanes, where TMU acts as a methylenating agent. This is the first report where TMU is used as a methylene source. Moreover, the synthesis of unsymmetrical bis(indolyl)methanes by using a carbon precursor is also reported herein for