Process for preparing 2-pyrrolidone
    1.
    发明授权
    Process for preparing 2-pyrrolidone 失效
    制备2-吡咯烷酮的方法

    公开(公告)号:US4193925A

    公开(公告)日:1980-03-18

    申请号:US4474

    申请日:1979-01-18

    CPC分类号: C07D207/267 C07D201/08

    摘要: An improved process for the preparation of 2-pyrrolidone by the liquid phase hydrogenation of succinonitrile in the presence of a hydrogenation catalyst and ammonia, whereafter the resulting hydrogenation product is hydrolyzed with water. A hydrogenation catalyst in the form of a fixed bed is used, and a liquid phase of succinonitrile and liquid ammonia is passed over the catalyst at a temperature of between 50.degree. and 130.degree. C.

    摘要翻译: 通过在加氢催化剂和氨的存在下丁二腈的液相氢化制备2-吡咯烷酮的改进方法,之后所得的氢化产物用水水解。 使用固定床形式的氢化催化剂,在50-130℃的温度下使琥珀腈和液氨的液相通过催化剂。

    Process for preparing 2-pyrrolidones
    4.
    发明授权
    Process for preparing 2-pyrrolidones 失效
    制备2-吡咯烷酮的方法

    公开(公告)号:US4123438A

    公开(公告)日:1978-10-31

    申请号:US829781

    申请日:1977-09-01

    IPC分类号: C07D207/26 C07D207/267

    CPC分类号: C07D207/267

    摘要: 2-PYRROLIDONE OR A SUBSTITUTED 2-PYRROLIDONE IS PREPARED IN HIGH YIELDS BY HYDROGENATING SUCCINONITRILE, OR AN ALKYL-SUBSTITUTED SUCCINONITRILE, AT 50.degree.-200.degree. C. in the liquid phase, in the presence of ammonia and with a partial hydrogen pressure of about 1-50 atmospheres, then the reaction mixture is contacted with water at 100.degree.-300.degree. C. and the desired product recovered.

    摘要翻译: 2-吡咯烷酮或取代的2-吡咯烷酮是通过在氨水存在下在液相中,在氢气和氢气压力下,在氢气中加氢化烷基化物或烷基取代的苯甲酸酯在50℃-200℃下制备的。 约1-50个大气压,然后使反应混合物在100-300℃与水接触,并回收所需产物。