PROCESS FOR THE PREPARATION OF 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE
    3.
    发明申请
    PROCESS FOR THE PREPARATION OF 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE 有权
    制备4-氨基-2,2,6,6-四甲基哌啶的方法

    公开(公告)号:US20090209766A1

    公开(公告)日:2009-08-20

    申请号:US12362136

    申请日:2009-01-29

    IPC分类号: C07D211/98

    CPC分类号: C07D211/58

    摘要: 4-amino-2,2,6,6-tetramethylpiperidine is prepared by reacting 2,2,6,6-tetramethylpiperidine-4-one with ammonia and hydrogen in the presence of nickel and/or cobalt catalyst and water. The main reaction is carried out at a pressure of at most 50 bar and a temperature of at most 120° C. up to a conversion of the 2,2,6,6-tetramethylpiperidine-4-one of at least 80%. Then, an after-reaction takes place at a higher temperature and at a higher pressure compared to the pressure and temperature of the main reaction.

    摘要翻译: 通过使2,2,6,6-四甲基哌啶-4-酮与氨和氢在镍和/或钴催化剂和水的存在下反应来制备4-氨基-2,2,6,6-四甲基哌啶。 主反应在至多50巴的压力和至多120℃的温度下进行,直到2,2,6,6-四甲基哌啶-4-酮的转化率为至少80%。 然后,与主反应的压力和温度相比,在更高的温度和更高的压力下进行后反应。

    Process for the preparation of 4-amino-2,2,6,6-tetramethylpiperidine
    4.
    发明授权
    Process for the preparation of 4-amino-2,2,6,6-tetramethylpiperidine 有权
    制备4-氨基-2,2,6,6-四甲基哌啶的方法

    公开(公告)号:US08252934B2

    公开(公告)日:2012-08-28

    申请号:US12362136

    申请日:2009-01-29

    IPC分类号: C07D211/00 C07D211/56

    CPC分类号: C07D211/58

    摘要: 4-amino-2,2,6,6-tetramethylpiperidine is prepared by reacting 2,2,6,6-tetramethylpiperidine-4-one with ammonia and hydrogen in the presence of nickel and/or cobalt catalyst and water. The main reaction is carried out at a pressure of at most 50 bar and a temperature of at most 120° C. up to a conversion of the 2,2,6,6-tetramethylpiperidine-4-one of at least 80%. Then, an after-reaction takes place at a higher temperature and at a higher pressure compared to the pressure and temperature of the main reaction.

    摘要翻译: 通过使2,2,6,6-四甲基哌啶-4-酮与氨和氢在镍和/或钴催化剂和水的存在下反应来制备4-氨基-2,2,6,6-四甲基哌啶。 主反应在至多50巴的压力和至多120℃的温度下进行,直到2,2,6,6-四甲基哌啶-4-酮的转化率为至少80%。 然后,与主反应的压力和温度相比,在更高的温度和更高的压力下进行后反应。