Enantioposition-selective arylation of biaryl ditriflates by palladium-catalyzed asymmetric Grignard cross-coupling
作者:Takashi Kamikawa、Tamio Hayashi
DOI:10.1016/s0040-4020(98)01154-5
日期:1999.3
Asymmetriccross-coupling of achiral biaryl ditriflates with aryl Grignard reagents in the presence of 1 equiv of lithium bromide and 5 mol % of palladium complex PdCl2[(S)-alaphos], where alaphos stands for (2-dimethylamino)propyldiphenylphosphine, gave axiallychiral monophenylation products with high enantioposition-selectivity. The remaining triflate group in the monophenylation products was substituted