Highly Active and Selective Catalysts for the Formation of α-Aryl Ketones
作者:Joseph M. Fox、Xiaohua Huang、André Chieffi、Stephen L. Buchwald
DOI:10.1021/ja993912d
日期:2000.2.1
biphenyl backbone, when combined with Pd(OAc)2, give highly active catalysts for the α-arylation of ketones. The ligand 2-methyl-2‘-dicyclohexylphosphinobiphenyl is particularly effective, and with 0.1−1.0 mol % Pd, a large variety of aryl halides and ketones react efficiently and with high selectivity. For two types of substrates, the ligands BINAP and Xantphos are more effective than the biphenyl-based