1,2-bis(methyl(1,1,3,3-tetramethylbutyl)-phosphino)ethane, process the preparation thereof, transition metal complexes containing the same as a ligand and uses thereof
    73.
    发明授权
    1,2-bis(methyl(1,1,3,3-tetramethylbutyl)-phosphino)ethane, process the preparation thereof, transition metal complexes containing the same as a ligand and uses thereof 失效
    1,2-二(甲基(1,1,3,3-四甲基丁基) - 膦基)乙烷,其制备方法,含有与配体相同的过渡金属配合物及其用途

    公开(公告)号:US06603032B1

    公开(公告)日:2003-08-05

    申请号:US10148895

    申请日:2002-06-18

    IPC分类号: C07F950

    摘要: The present invention provides a novel bisphosphine compound having a chiral center on the phosphorus atom, which is suitable as a ligand for an asymmetric catalyst for use in asymmetric hydrogenation, this bisphosphine compound being represented by the following formula (1): (where t—C8H17 denotes 1,1,3,3-tetramethylbutyl), and a process for the production of this bisphosphine compound. Also provided are a transition metal complex having this bisphosphine compound as a ligand, and a process for the asymmetric hydrogenation of an unsubstituted carboxylic acid or its ester.

    摘要翻译: 本发明提供了一种在磷原子上具有手性中心的新型双膦化合物,其适合作为用于不对称氢化的不对称催化剂的配体,该双膦化合物由下式(1)表示:(其中t- C8H17表示1,1,3,3-四甲基丁基),以及该双膦化合物的制造方法。 还提供了具有这种双膦化合物作为配体的过渡金属络合物,以及未取代的羧酸或其酯的不对称氢化的方法。

    NOVEL ASYMMETRIC PHOSPHINE LIGAND
    75.
    发明申请
    NOVEL ASYMMETRIC PHOSPHINE LIGAND 有权
    新型不对称磷光体配体

    公开(公告)号:US20030144138A1

    公开(公告)日:2003-07-31

    申请号:US10291364

    申请日:2002-11-12

    摘要: A novel phosphine compound having excellent properties (chemical selectivity, enantioselectivity, catalytic activity) as a catalyst for asymmetric syntheses, especially asymmetric hydrogenation. A phosphine-phosphorane compound represented by the following general formula: 1 (wherein R1 represents hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms, R2, R3, R4, and R5 are the same or different, and each represents hydrogen atom, or an alkyl group having 1 to 6 carbon atoms, etc., and each of R2 and R3, R3 and R4, and R4 and R5 may be together combined to form a ring which may contain one or more (preferably 1 to 2) oxygen atoms, and R6 and R7 are the same or different, and each represents a linear or branched alkyl group having 1 to 6 carbon atoms, etc.).

    摘要翻译: 具有优异性能(化学选择性,对映选择性,催化活性)的不对称合成催化剂,特别是不对称氢化的新型膦化合物。 由以下通式表示的膦 - 正膦烷化合物(其中,R 1表示氢原子或碳原子数为1〜4的直链或支链烷基,R 2,R 3,R 4,R 5相同或不同,表示氢 原子或具有1至6个碳原子的烷基等,并且R 2和R 3,R 3和R 4以及R 4和R 5各自可以一起组合形成可以含有一个或多个(优选1至2个 ),R6和R7相同或不同,分别表示碳原子数为1〜6的直链或支链烷基等)。

    Process for making optically active alpha-amino ketones and selected novel optically active alpha-amino ketones
    80.
    发明申请
    Process for making optically active alpha-amino ketones and selected novel optically active alpha-amino ketones 失效
    制备光学活性α-氨基酮和选择的新型光学活性α-氨基酮的方法

    公开(公告)号:US20020049332A1

    公开(公告)日:2002-04-25

    申请号:US09973990

    申请日:2001-10-11

    发明人: John J. Talley

    摘要: The invention includes selected novel optically active null-amino ketones which either are themselves useful or are intermediates for the preparation of known ketomethylene pseudopeptides useful as antibiotics, antibiotic enhancers, or enzyme inhibitors. Further, the present invention provides a method for dehydrogenation/asymmetrical hydrogenation to obtain essentially pure antipodes of ketomethylene pseudopeptides having two chiral centers.

    摘要翻译: 本发明包括选择性的新型光学活性α-氨基酮,其本身可用或用作制备用作抗生素,抗生素增强剂或酶抑制剂的已知酮亚甲基假型肽的中间体。 此外,本发明提供了一种脱氢/不对称氢化的方法,以获得具有两个手性中心的基本上纯的对映体。