PURIFICATION PROCESS
    76.
    发明公开
    PURIFICATION PROCESS 失效
    净化过程

    公开(公告)号:EP0819131A1

    公开(公告)日:1998-01-21

    申请号:EP96911996.0

    申请日:1996-04-02

    IPC分类号: C02F1 C07D501

    CPC分类号: C07D501/00

    摘要: A process for the removal of fluoride from spent liquors obtained in a process in the production of an organic compound in which boron trifluoride is used by conversion of fluoride into an isolatable salt of tetrafluoroborate.

    摘要翻译: 在生产使用三氟化硼的有机化合物的过程中通过将氟化物转化为可分离的四氟硼酸盐而从废液中除去氟化物的方法。

    Process for the preparation of cephalosporins
    77.
    发明公开
    Process for the preparation of cephalosporins 失效
    Verfahren zur Herstellung von Cephalosporinen。

    公开(公告)号:EP0649849A1

    公开(公告)日:1995-04-26

    申请号:EP94116660.5

    申请日:1994-10-21

    IPC分类号: C07D501/04 C07D501/18

    CPC分类号: C07D501/00

    摘要: A process for etherifying the hydroxymethyl group in position 3 of a cephalosporin by reaction of a 3-hydroxymethyl cephalosporin with an dioxycarbenium-tetrafluoroborate.

    摘要翻译: 通过3-羟甲基头孢菌素与二氟碳鎓四氟硼酸盐的反应醚化头孢菌素3位的羟甲基的方法。

    New process for the production of ceftriaxone
    79.
    发明公开
    New process for the production of ceftriaxone 失效
    新方法生产CEFTRIAXONE

    公开(公告)号:EP0556768A3

    公开(公告)日:1993-11-24

    申请号:EP93102381.6

    申请日:1993-02-16

    IPC分类号: C07D501/36 C07D501/00

    CPC分类号: C07D501/00

    摘要: The invention relates to a new process for the production of the disodium salt hemiheptahydrate of ceftriaxone by reacting 7-amino-3-{[(2,5-dihydro-6-hydroxy-2-methyl-5-oxo-1,2,4-triazin-3-yl)thio]methyl}-3-cephem-4-carboxylic acid with 2-(2-aminothiazol-4-yl)-2-syn-methoximinoacetic acid-(2-benzthiazolyl)thiolester in the presence of a base, characterized in that the reaction and the crystallization of the disodium salt hemiheptahydrate of ceftriaxone are carried out in aqueous acetone.