The present invention provides a ruthenium-optically active phosphine complex mixture comprising three complexes represented by the following general formulae (I), (II) and (III), respectively:
[Ru(R1-SEGPHOS) (sol)4]I2 (I)
[Ru(R1-SEGPHOS) (sol)4]I(anion) (II)
[RuI(R1-SEGPHOS) (sol)3] (anion) (III)
wherein sol represents a nitrile-based solvent; R1-SEGPHOS represents an optically active tertiary phosphine represented by the following general formula (IV):
wherein R1 represents an aryl group which may have a substituent selected from the group consisting of a C1-4 lower alkyl group, a C1-4 lower alkoxy group, a C1-4 lower alkylamino group and a halogen atom, or a C3-9 cycloalkyl group; and anion represents a perfluoroalkylsulfonyl anion, a process for the preparation thereof and an asymmetric hydrogenation catalyst comprising the ruthenium-optically active phosphine complex mixture.
本发明提供了一种
钌-光学活性膦络合物混合物,包括分别由以下通式(I)、(II)和(III)表示的三种络合物:
[Ru(R1-
SEGPHOS) (sol)4]I2 (I)
[Ru(R1-
SEGPHOS)(溶胶)4]I(阴离子) (II)
[RuI(R1-
SEGPHOS)(溶胶)3](阴离子) (III)
其中溶胶代表一种腈基溶剂;R1-
SEGPHOS 代表一种光学活性叔膦,其通式如下(IV):
其中 R1 代表芳基,该芳基可具有选自 C1-4 低级烷基、C1-4 低级烷氧基、C1-4 低级烷
氨基和卤素原子或 C3-9 环烷基组成的取代基;阴离子代表
全氟烷基磺酰基阴离子、其制备方法和包含
钌-光学活性膦络合物混合物的不对称氢化催化剂。