Hydrogen Bonding Makes a Difference in the Rhodium-Catalyzed Enantioselective Hydrogenation Using Monodentate Phosphoramidites
作者:Yan Liu、Christian A. Sandoval、Yoshiki Yamaguchi、Xue Zhang、Zheng Wang、Koichi Kato、Kuiling Ding
DOI:10.1021/ja063350f
日期:2006.11.1
generation of monodentate phosphoramidite ligands bearing a primary amine moiety was found to display comparable or better efficiency than bisphosphines in the Rh-catalyzed asymmetric hydrogenation of challenging substrates, such as (Z)-methyl alpha-acetoxyacrylate or (E)-beta-aryl itaconate derivatives, affording the corresponding hydrogenation products with excellent enantioselectivities (up to >99%