Method for the continuous production of aldehydes
    52.
    发明授权
    Method for the continuous production of aldehydes 失效
    连续生产醛的方法

    公开(公告)号:US07615645B2

    公开(公告)日:2009-11-10

    申请号:US10575843

    申请日:2004-10-14

    IPC分类号: C07C45/50 C07D207/00

    摘要: The invention relates to a method for the continuous production of aldehydes by the isomerising hydroformylation in a homogenous phase of olefin compositions by means of a synthesis gas, in the presence of a homogeneous rhodium catalyst that is complexed with an organophosphorus ligand containing oxygen atoms and/or nitrogen atoms and a free ligand. The production is carried out at high temperature and high pressure in a multi-stage reaction system consisting of at least two reaction zones. According to the method, the olefin composition is first reacted in a first reaction zone or a group of several first reaction zones at a total pressure of between 10 and 40 bar, using a synthesis gas with a CO/H2 molar ratio of between 4:1 and 1:2 until a 40 to 95% conversion of the α-olefins is obtained.

    摘要翻译: 本发明涉及通过在与含氧原子的有机磷配体络合的均匀铑催化剂的存在下,通过合成气在烯烃组合物的均相中通过异构化加氢甲酰化连续生产醛的方法和/ 或氮原子和游离配体。 在由至少两个反应区组成的多级反应体系中,在高温高压下进行生产。 根据该方法,首先使用CO / H 2摩尔比为4:4的合成气,在10-400巴的总压力下,在第一反应区或几个第一反应区的一组中反应烯烃组合物。 1和1:2,直到获得40-95%的α-烯烃转化率。

    Process for Preparing Optically Active Diphosphanes
    55.
    发明申请
    Process for Preparing Optically Active Diphosphanes 有权
    光学活性二膦的制备方法

    公开(公告)号:US20080242893A1

    公开(公告)日:2008-10-02

    申请号:US11997027

    申请日:2006-07-26

    IPC分类号: C07F9/53 C07C45/62

    CPC分类号: C07F9/5027 Y02P20/582

    摘要: The present invention relates to a process for preparing optically active bisphosphinylalkanes from the correspondingly substituted, racemic 1,2-diols. The optically active bisphosphinylalkanes which can be obtained in this way are suitable as ligands for preparing chiral transition metal catalysts.

    摘要翻译: 本发明涉及从相应取代的外消旋1,2-二醇制备光学活性双膦酰基烷烃的方法。 以这种方式获得的光学活性双膦基烷烃适合用作制备手性过渡金属催化剂的配体。