Homogeneous asymmetric hydrogenation using phosphine ligands of transition metals
    3.
    发明授权
    Homogeneous asymmetric hydrogenation using phosphine ligands of transition metals 有权
    使用过渡金属膦配体的均相不对称氢化

    公开(公告)号:US06207853B1

    公开(公告)日:2001-03-27

    申请号:US09213745

    申请日:1998-12-17

    IPC分类号: C07C6976

    CPC分类号: C07C67/303 C07C69/34

    摘要: A process for the preparation of an enantiomerically enriched 2-substituted succinic acid derivative of formula 2, which comprises asymmetric hydrogenation of the dehydro precursor of formula 7 or 8, or a mixture thereof wherein R1 and R2 are independently H, a salt-forming cation, or an organic group of up to 30 C atoms, and R3 and R4 are independently H or an organic group of up to 30 C atoms, provided that R3 and R4 are not both H, in the presence of a transition metal complex of a chiral phosphine ligand having the partial formula 10 wherein n is 0 to 6 and R represents at least one non-hydrogen organic group of up to 30 C atoms.

    摘要翻译: 制备式2的对映体富集的2-取代琥珀酸衍生物的方法,其包括式7或8的脱氢前体或其混合物的不对称氢化,其中R1和R2独立地为H,成盐阳离子, 或至多30个C原子的有机基团,并且R3和R4独立地为H或至多30个C原子的有机基团,条件是在手性的过渡金属络合物存在下,R 3和R 4不同时为H 具有部分式10的膦配体,其中n为0至6,R表示至多一个至多30个C原子的非氢有机基团。

    Asymmetric hydrogenation
    5.
    发明授权
    Asymmetric hydrogenation 有权
    不对称氢化

    公开(公告)号:US06414187B1

    公开(公告)日:2002-07-02

    申请号:US09673119

    申请日:2000-12-05

    IPC分类号: C07C5750

    CPC分类号: C07C67/303 C07C69/34

    摘要: The present invention pertains to a process for the preparation of an enantiomerically enriched chiral carboxylic acid derivative having the partial formula: C—C—C—COOX wherein X is a cation, comprising formation of a dehydro precursor salt having the partial formula: C═C—C—COOX by reaction of the corresponding precursor acid with an at least substantially stoichiometric amount of base, and asymmetric hydrogenation of the salt in the presence of a transition metal complex of a chiral phosphine ligand.

    摘要翻译: 本发明涉及制备具有部分分子式:CCC-COOX的对映异构体富集的手性羧酸衍生物的方法,其中X是阳离子,包括通过以下步骤形成具有部分分子式:C = CC-COOX的脱氢前体盐 相应的前体酸与至少基本上化学计量的碱的反应,以及在手性膦配体的过渡金属络合物存在下不对称地加氢盐。

    Chiral ligands for asymmetric catalysis
    6.
    发明授权
    Chiral ligands for asymmetric catalysis 有权
    用于不对称催化的手性配体

    公开(公告)号:US06172249B2

    公开(公告)日:2001-01-09

    申请号:US09433232

    申请日:1999-11-04

    IPC分类号: C07F950

    CPC分类号: C07B53/00 C07F15/02

    摘要: An enantiomerically enriched compound of formula (4) or the opposite enantiomer thereof, wherein R is C1-10 alkyl. This compound, in the form of a transition metal complex, is useful as a catalyst for stereoselective hydrogenation.

    摘要翻译: 式(4)的对映异构体富集的化合物或其相对的对映异构体,其中R是C 1-10烷基。 这种以过渡金属络合物形式的化合物可用作立体选择性氢化的催化剂。

    Ruthenium-disphosphine complexes and their use as catalysts
    7.
    发明授权
    Ruthenium-disphosphine complexes and their use as catalysts 有权
    钌 - 配膦络合物及其用作催化剂

    公开(公告)号:US06486337B2

    公开(公告)日:2002-11-26

    申请号:US09821222

    申请日:2001-03-29

    IPC分类号: C07F1500

    CPC分类号: C07F15/0053

    摘要: The present invention concerns novel complexes, suitable in particular for use as catalysts in the asymmetric hydrogenation of ketones, of formula 1 or a diastereoisomer thereof, wherein each Ar is an aromatic or heteroaromatic group of up to 20 atoms; X is halide or carboxylate; and R1, R2, R3, and R4 are independently hydrogen, aryl or alkyl, optionally linked or part of a ring.

    摘要翻译: 本发明涉及新型络合物,特别适用于式1或其非对映异构体的酮的不对称氢化中的催化剂,其中Ar是至多20个原子的芳族或杂芳族基团; X是卤素或羧酸酯; 并且R 1,R 2,R 3和R 4独立地为氢,芳基或烷基,任选地连接或部分环。