Hydrogenation of single ring aromatic diamines
    1.
    发明授权
    Hydrogenation of single ring aromatic diamines 有权
    单环芳族二胺的氢化

    公开(公告)号:US06429338B1

    公开(公告)日:2002-08-06

    申请号:US10051934

    申请日:2002-01-17

    IPC分类号: C07C20900

    CPC分类号: C07C209/72 C07C211/18

    摘要: This invention relates to an improved process for the preparation of cyclohexylamines wherein an aromatic amine is contacted with hydrogen in the presence of a hydrogenation catalyst. The improvement resides in utilizing a hydrogenation catalyst comprised of rhodium metal, utilizing a dialkyl ether solvent, and effecting delay addition of the aromatic diamine to the reaction medium.

    摘要翻译: 本发明涉及一种制备环己胺的改进方法,其中芳族胺在氢化催化剂存在下与氢接触。 改进在于利用由铑金属组成的氢化催化剂,利用二烷基醚溶剂,并且将芳族二胺延迟加入到反应介质中。