Intermediates for the synthesis of bisphosphine compounds
    15.
    发明授权
    Intermediates for the synthesis of bisphosphine compounds 失效
    用于合成双膦化合物的中间体

    公开(公告)号:US5739360A

    公开(公告)日:1998-04-14

    申请号:US714747

    申请日:1996-09-16

    CPC分类号: C07F9/65517

    摘要: The invention relates to novel bisphosphonates and to processes for their preparation and for their resolution into the enantiomers. The bisphosphonates according to the invention are valuable intermediates for the preparation of bisphosphine compounds, especially chiral bisphosphine ligands. These in turn are constituents of transition metal complexes which are used as catalysts inter alia in asymmetric hydrogenation. The novel bisphosphonates have the general formula (I) ##STR1## in which R.sup.1 is linear or branched alkyl having up to 6 carbon atoms, aryl or aralkyl, each of which can optionally be substituted, or two radicals R.sup.1 together are a bridging hydrocarbon radical having up to 6 carbon atoms, and can exist in the form of their racemates or as enantiomers.

    摘要翻译: 本发明涉及新的双膦酸盐及其制备方法及其分解成对映体。 根据本发明的双膦酸盐是制备双膦化合物,特别是手性双膦配体的有价值的中间体。 这些又是作为催化剂的过渡金属络合物的成分,特别是用于不对称氢化。 新型二膦酸盐具有通式(I)其中R 1为具有至多6个碳原子的直链或支链烷基,芳基或芳烷基,其中每一个可任选被取代,或两个基团R 1一起为 具有至多6个碳原子的桥连烃基,并且可以以其外消旋体的形式存在或作为对映异构体存在。