Hybrid NH<sub>2</sub>-Benzimidazole Ligands for Efficient Ru-Catalyzed Asymmetric Hydrogenation of Aryl Ketones
作者:Yuehui Li、Kuiling Ding、Christian A. Sandoval
DOI:10.1021/ol802766u
日期:2009.2.19
Readily available hybrid NH2/benzimidazole ligands (R-bimaH, 1) dramatically influence the outcome of established Ru-based catalysts during asymmetric hydrogenation of aryl ketones. The benzimidazole functionality results in reversal of the typically observed chiral induction and allows for hydrogenation to be uncharacteristically conducted in nonprotic solvents. The developed systems efficiently catalyzed the AH of a number of ketones in up to 99% ee.