Method for producing biphenyltetracarboxylic acid tetraester
    39.
    发明授权
    Method for producing biphenyltetracarboxylic acid tetraester 有权
    联苯四羧酸四酯的制备方法

    公开(公告)号:US08541615B2

    公开(公告)日:2013-09-24

    申请号:US13057600

    申请日:2009-08-06

    IPC分类号: C07C69/604

    CPC分类号: C07C67/343 C07C69/76

    摘要: Disclosed is a method for producing a biphenyltetracarboxylic acid ester by oxidative coupling a phthalic acid ester by using a catalyst comprising at least a palladium salt, a copper salt and a β-dicarbonyl compound in the presence of a molecular oxygen, wherein the β-dicarbonyl compound is supplied into a reaction mixture liquid intermittently at an interval of less than 30 minutes, or continuously. This method allows, in particular, the selective and economical production of an asymmetric biphenyltetracarboxylic acid tetraester such as 2,3,3′,4′-biphenyltetracarboxylic acid tetraester.

    摘要翻译: 公开了一种通过在分子氧存在下使用至少包含钯盐,铜盐和β-二羰基化合物的催化剂氧化偶联邻苯二甲酸酯来制备联苯四羧酸酯的方法,其中β-二羰基 将化合物间歇地以小于30分钟的间隔或连续地供给到反应混合物液体中。 该方法特别是选择性和经济地生产不对称联苯四羧酸四酯如2,3,3',4'-联苯四羧酸四酯。