Process for hydrolyzing nitriles
    2.
    发明授权
    Process for hydrolyzing nitriles 失效
    水解腈的方法

    公开(公告)号:US4820872A

    公开(公告)日:1989-04-11

    申请号:US852250

    申请日:1986-03-06

    IPC分类号: C07C233/09 C07C102/08

    CPC分类号: C07C233/09

    摘要: When making an unsaturated amide by hydrolysis of an unsaturated nitrile in the presence of a catalyst such as Raney copper and an oxidizing agent such as copper nitrate, by-product formation is reduced by including a reagent selected from reducing agents and acids that are substantially non-oxidizing relative to the said oxidizing agent. The preferred reagents are acidic buffers, especially acetic acid and copper acetate. Washing with such a buffer a Raney catalyst or other catalyst that is to be used for catalyzing the hydrolysis of an unsaturated nitrile to an unsaturated amide reduces the temperature surge that otherwise occurs upon addition of the catalyst to the reaction mixture.

    摘要翻译: PCT No.PCT / GB85 / 00320 Sec。 371日期:1986年3月6日 102(e)日期1986年3月6日PCT提交1985年7月16日PCT公布。 公开号WO86 / 00614 日本1986年1月30日。当在诸如阮内铜和氧化剂如硝酸铜的催化剂存在下,通过不饱和腈的水解制备不饱和酰胺时,副产物形成通过包括选自还原 相对于所述氧化剂基本上不氧化的试剂和酸。 优选的试剂是酸性缓冲液,特别是乙酸和乙酸铜。 用这种缓冲液洗涤用于催化将不饱和腈水解成不饱和酰胺的阮内催化剂或其它催化剂减少了当向反应混合物中加入催化剂时发生的温度升高。