Catalytic Asymmetric Synthesis of Secondary Nitriles via Stereoconvergent Negishi Arylations and Alkenylations of Racemic α-Bromonitriles
作者:Junwon Choi、Gregory C. Fu
DOI:10.1021/ja303442q
日期:2012.6.6
α-alkyl substituents; the first examples of the use of alkenylzinc reagents in stereoconvergent Negishi reactions of alkyl electrophiles; demonstration of the utility of a new family of ligands for asymmetric Negishi cross-couplings (a bidentate bis(oxazoline), rather than a tridentate pybox); in the case of arylzincreagents, carbon-carbon bond formation at a remarkably low temperature (-78 °C), the lowest