Suzuki-miyaura reactions catalyzed by C 2-symmetric pd-multi-dentate n-heterocyclic carbene complexes

Abstract

Suzuki-Miyaura coupling reactions are promoted by Pd complexes ligated with C 2-symmetric multi-dentate N-heterocyclic carbenes derived in situ from Pd(OAc) 2, imidazolium salts. Good to excellent yields were obtained for aryl bromides as substrates. Turnover numbers of up to 10 5 could be achieved with 5 × 10 -4 mol% of Pd(OAc) 2/1 × 10 -3 mol% NHC precatalyst in 24 h. © 2012 by the authors; licensee MDPI, Basel, Switzerland.