title: Three-component coupling using arynes and DMF: straightforward access to coumarins via ortho-quinone methides.
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.
authors: Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan. yhiroto@hiroshima-u.ac.jp
authors: Hiroto
authors: H
authors: Yoshida
authors: Yu
authors: Y
authors: Ito
authors: Joji
authors: J
authors: Ohshita