Oxidative heck reactions using aryltrifluoroborates and aryl N-methyliminodiacetic acid (MIDA) boronates

Abstract

A microwave-assisted protocol furnished cinnamic acid esters from electron- deficient olefins at 120°C using 1,3-bis(diphenylphosphino)propane (dppp) as the supporting ligand and para-benzoquinone (p-BQ) as the hydride acceptor. Use of acetone as the solvent and methanol as a co-solvent, the electron-rich olefin, n-butyl vinyl ether, was regioselectively arylated to furnish branched products under the same conditions. © 2012 The Authors.