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    • 8. 发明授权
    • Ruthenium complexes and process for preparing alcoholic compounds using these
    • 钌络合物及其制备方法
    • US06790973B2
    • 2004-09-14
    • US10330501
    • 2002-12-27
    • Kunihiko TsutsumiKunihiko MurataTakeshi OtaTakao Ikariya
    • Kunihiko TsutsumiKunihiko MurataTakeshi OtaTakao Ikariya
    • C07F1500
    • C07F15/0053
    • The invention provides novel ruthenium complexes having an optically active diphosphine compound, which has asymmetry on carbon and is easy to synthesize, as the ligand and a process for preparing optically active alcoholic compounds using said complexes as the catalysts, wherein said process is the process for preparing optically active alcoholic compounds, which are excellent in terms of reactivity, enatioselectivity and the like in an asymmetric hydrogenation of carbonyl compounds compared with conventional ruthenium complex catalysts having an optically active diphosphine compound having the axial chirality or the asymmetry on carbon as the ligand. In a preferred embodiment, the invention provides an optically active ruthenium complex represented by the general formula (1) wherein X and Y, which can be identical to or different from each other, represent a hydrogen atom or an anion group, R1 and R2, which can be identical to or different from each other, represent a chain or cyclic hydrocarbon group of carbon number 1 to 20, which can be substituted, R3 and R4, which can be identical to or different from each other, represent a hydrogen atom or a hydrocarbon group of carbon number 1 to 3, and R5, R6, R7 and R8, which can be identical to or different from one another, represent a hydrocarbon group of carbon number 1 to 30, which can be substituted, with the proviso that when X and Y are bromine, R1 and R2 are a methyl group, and when R3 and R4 are a hydrogen atom, at least one of R5, R6, R7 and R8 is not a phenyl group.
    • 本发明提供具有光学活性二膦化合物的新型钌络合物,其具有碳不对称性并易于合成,作为配体,以及使用所述络合物作为催化剂制备光学活性醇化合物的方法,其中所述方法是 制备光学活性醇类化合物,与具有轴向手性或碳不对称性的光学活性二膦化合物作为配体的常规钌络合物催化剂相比,在羰基化合物的不对称氢化方面具有优异的反应性,选择性等优异性。 在优选的实施方案中,本发明提供由通式(1)表示的光学活性钌络合物,其中X和Y彼此相同或不同,表示氢原子或阴离子基团,R 1, 和R 2可以相同或不同,表示链或环 可以被取代的碳数1〜20的可以相同或不同的碳原子数为1〜20的烃基表示碳原子数1〜3的氢原子或烃基 ,R 5,R 6,R 7和R 8可以相同或不同,表示可以被取代的碳原子数为1〜30的烃基, 条件是当X和Y为溴时,R 1和R 2为甲基,当R 3和R 4为氢原子时,R 5,R <6>,R 7和R 8不是苯基。