A concise synthesis of a new xylyl-biaryl diphosphine ligand for asymmetric hydrogenation of ketones
作者:Julian P. Henschke、Antonio Zanotti-Gerosa、Paul Moran、Paul Harrison、Brendan Mullen、Guy Casy、Ian C. Lennon
DOI:10.1016/s0040-4039(03)00940-7
日期:2003.6
A concise synthesis of a symmetrical biaryl diphosphine ligand bearing 3,5-dimethylphenyl substituents at phosphorus is described. The ruthenium catalysts [diphosphine RuCl2 diamine] containing the new ligand Xyl-TetraPHEMP were found to be as active and as selective as the state-of-the-art catalysts for homogeneous asymmetric ketone hydrogenation.
描述了在磷上带有3,5-二甲基苯基取代基的对称联芳基二膦配体的简明合成。发现含有新的配体Xyl-TetraPHEMP的钌催化剂[二膦RuCl 2二胺]与用于均相不对称酮氢化的最新催化剂一样具有活性和选择性。