Organic letters

Robust acenaphthoimidazolylidene palladium complexes: highly efficient catalysts for Suzuki–Miyaura couplings with sterically hindered substrates

T Tu, Z Sun, W Fang, M Xu, Y Zhou

Index: Tu, Tao; Sun, Zheming; Fang, Weiwei; Xu, Mizhi; Zhou, Yunfei Organic Letters, 2012 , vol. 14, # 16 p. 4250 - 4253

Full Text: HTML

Citation Number: 58

Abstract

Robust acenaphthoimidazolylidene palladium complexes have been demonstrated as highly efficient and general catalysts for the sterically hindered Suzuki–Miyaura cross- coupling reactions in excellent yields even with low catalyst loadings under mild reaction conditions. The high catalytic activity of these complexes highlights that, besides the “flexible steric bulky” concept, σ-donor properties of the NHC ligands are also crucial to accelerate ...