Process for preparing 2-hydroxydibenzofuran-3-carboxylic acid and alkali
metal salts thereof
    1.
    发明授权
    Process for preparing 2-hydroxydibenzofuran-3-carboxylic acid and alkali metal salts thereof 失效
    制备2-羟基二苯并呋喃-3-羧酸及其碱金属盐的方法

    公开(公告)号:US4831168A

    公开(公告)日:1989-05-16

    申请号:US142333

    申请日:1987-12-29

    IPC分类号: C07D307/91

    CPC分类号: C07D307/91

    摘要: 2-Hydroxydibenzofuran-3-carboxylic acid and its alkali metal salts are prepared by reacting an alkali metal salt of 2-hydroxydibenzofuran with carbon dioxide, where appropriate under pressure, at a temperature above 120.degree. C. in an aliphatic alcohol of 4 to 8 carbon atoms.

    摘要翻译: 2-羟基二苯并呋喃-3-羧酸及其碱金属盐的制备方法是,将2-羟基二苯并呋喃的碱金属盐与适当的压力下的二氧化碳在温度高于120℃的4至8的脂族醇中反应 碳原子。