Enantioselective α-Arylation of Cyclic Ketones Catalyzed by a Combination of an Unmodified Cinchona Alkaloid and a Palladium Complex
作者:Christian Richter、Kalluri V. S. Ranganath、Frank Glorius
DOI:10.1002/adsc.201100669
日期:2012.2
A palladium/Cinchona alkaloid-catalyzed α-arylation between cyclicketones and aryl halides under phosphine-free conditions is presented. The use of a simple, unmodifiedCinchonaalkaloid results in high levels of activity and selectivity with up to 93% ee. These enantioinduction levels are comparable or even higher than the ones reported using palladium/BINAP complexes. To the best of our knowledge