Three-component coupling using arynes and DMF: straightforward access to coumarinsvia ortho-quinone methides†
Hiroto Yoshida,Yu Ito,Joji Ohshita
Chemical Communications Pub Date : 05/24/2011 00:00:00 , DOI:10.1039/C1CC11955A
Abstract
ortho-Quinone methides, arising from a formal [2+2] cycloaddition between arynes and DMF, were found to facilely undergo a [4+2] cycloaddition with ester enolates or ketenimine anions to produce diverse coumarins in a straightforward manner.
