Method for preparation of 4,4′-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine by using 4-nitroaniline
    1.
    发明授权
    Method for preparation of 4,4′-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine by using 4-nitroaniline 有权
    通过使用4-硝基苯胺制备4,4'-二硝基二苯胺和4,4'-双(烷基氨基)二苯胺的方法

    公开(公告)号:US08759587B2

    公开(公告)日:2014-06-24

    申请号:US13162618

    申请日:2011-06-17

    IPC分类号: C07C209/00

    摘要: Provided is a method of preparing 4,4′-dinitrodiphenylamine (4,4′-DNDPA) in high yield by reacting 4-nitroaniline with excess nitrobenzene via the NASH reaction, and a method of preparing 4,4′-bis(alkylamino)diphenylamine (4,4′BAADA) in high yield and purity by hydrogenating the resulting 4,4′-DNDPA with a ketone compound in the presence of hydrogen and hydrogenation catalyst. The disclosed process is simple, allows selective preparation of 4,4′-DNDPA without byproducts, and thus allows preparation of 4,4′-BAADA in high yield without a complicated purification procedure.

    摘要翻译: 提供了通过使NASH反应使4-硝基苯胺与过量硝基苯反应而以高产率制备4,4'-二硝基二苯胺(4,4'-DNDPA)的方法,以及制备4,4'-二(烷基氨基) 二苯胺(4,4'BAADA)以高产率和纯度通过在氢气和氢化催化剂存在下用酮化合物氢化所得4,4'- DNDPA。 所公开的方法简单,允许选择性制备4,4'- DNDPA而不产生副产物,因此允许以高产率制备4,4'-BAADA而无需复杂的纯化程序。