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。

    METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE WITH THE BASE CATALYST COMPLEX
    2.
    发明申请
    METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE WITH THE BASE CATALYST COMPLEX 有权
    4,4'-二氨基苯胺和4,4'-双(双(甲基)氨基)二苯胺与基础催化剂复合物的制备方法

    公开(公告)号:US20120157713A1

    公开(公告)日:2012-06-21

    申请号:US13162610

    申请日:2011-06-17

    IPC分类号: C07C209/36 C07C209/78

    摘要: Provided is a method for preparing 4,4′-dinitrodiphenylamine (4,4′-DNDPA) in high yield via the NASH reaction using a mixture of a bis-quaternary ammonium base and a base catalyst for the reaction of urea with nitrobenzene, 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 in the presence of hydrogen and hydrogenation catalyst. The catalyst complex used in the present invention allows easy recovery, provides superior alkaline stability and is capable of reducing production cost.

    摘要翻译: 提供了通过使用二季铵碱和碱催化剂的混合物通过NASH反应以高产率制备4,4'-二硝基二苯胺(4,4'-DNDPA)的方法,用于尿素与硝基苯的反应,以及 通过在氢气和氢化催化剂存在下用酮氢化所得的4,4'-DNDPA,以高产率和纯度制备4,4'-双(烷基氨基)二苯胺(4,4'BAADA)的方法。 本发明中使用的催化剂配合物容易回收,提供优异的碱稳定性,能够降低生产成本。

    Method for preparation of 4,4′-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine with the base catalyst complex
    3.
    发明授权
    Method for preparation of 4,4′-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine with the base catalyst complex 有权
    4,4'-二硝基二苯胺和4,4'-双(烷基氨基)二苯胺与碱催化剂络合物的制备方法

    公开(公告)号:US08835687B2

    公开(公告)日:2014-09-16

    申请号:US13162610

    申请日:2011-06-17

    摘要: Provided is a method for preparing 4,4′-dinitrodiphenylamine (4,4′-DNDPA) in high yield via the NASH reaction using a mixture of a bis-quaternary ammonium base and a base catalyst for the reaction of urea with nitrobenzene, 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 in the presence of hydrogen and hydrogenation catalyst. The catalyst complex used in the present invention allows easy recovery, provides superior alkaline stability and is capable of reducing production cost.

    摘要翻译: 提供了通过使用二季铵碱和碱催化剂的混合物通过NASH反应以高产率制备4,4'-二硝基二苯胺(4,4'-DNDPA)的方法,用于尿素与硝基苯的反应,以及 通过在氢气和氢化催化剂存在下用酮氢化所得的4,4'-DNDPA,以高产率和纯度制备4,4'-双(烷基氨基)二苯胺(4,4'BAADA)的方法。 本发明中使用的催化剂配合物容易回收,提供优异的碱稳定性,能够降低生产成本。

    METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE BY USING 4-NITROANILINE
    4.
    发明申请
    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'-二氨基苯胺和4,4'-双(亚氨基)二苯胺的方法

    公开(公告)号:US20120157714A1

    公开(公告)日:2012-06-21

    申请号:US13162618

    申请日:2011-06-17

    IPC分类号: C07C209/02 C07C209/36

    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。