Process for producing 2-(2-hydroxyphenyl) phenylphosphinic acid and
derivatives
    1.
    发明授权
    Process for producing 2-(2-hydroxyphenyl) phenylphosphinic acid and derivatives 失效
    2-(2-羟基苯基)苯基次膦酸及其衍生物的制备方法

    公开(公告)号:US06107506A

    公开(公告)日:2000-08-22

    申请号:US65126

    申请日:1998-04-23

    CPC分类号: C07F9/65719 C07F9/4841

    摘要: In the coexistence of an a 5.about.20 molar excess of water based upon 2-phenylphenol compound which is reacted with phosphorus trihalide to form a 6-halo-(6H)-dibenzo[c.e][1,2]-oxaphosphorin compound and an organic solvent which is unsoluble in water and is inert in the reaction system, an organic phosphorus compound expressed by the structural formula (1) is hydrolyzed under heating to obtain a biphenyl phosphorus compound expressed by the general formula (2) and then, a cyclising dehydration reaction under heating of the resulting compound is carried out to obtain an organic phosphorus compound expressed by the structural formula (3). This constitution can produce a product of high purity and high quality without using specific chemicals or an equipment made of specific materials.

    摘要翻译: 在基于与三卤化磷反应形成6-卤代 - (6H) - 二苯并[c] [1,2] - 氧磷杂in in啶化合物的2-苯基苯酚化合物共存5摩尔过量的水的情况下, 在水中不溶于水且在反应体系中为惰性的有机溶剂中,将由结构式(1)表示的有机磷化合物加热水解,得到由通式(2)表示的联苯磷化合物,然后环化 进行所得化合物的加热下的脱水反应,得到由结构式(3)表示的有机磷化合物。 这种结构可以生产高纯度和高质量的产品,而不使用特定的化学品或由特定材料制成的设备。