Process for preparing benzoxazolones from aromatic nitro compounds
    9.
    发明授权
    Process for preparing benzoxazolones from aromatic nitro compounds 失效
    从芳香硝基化合物制备苯并吖唑酮的方法

    公开(公告)号:US3657265A

    公开(公告)日:1972-04-18

    申请号:US3657265D

    申请日:1968-06-21

    申请人: OLIN CORP

    IPC分类号: C07D263/58 C07D85/48

    CPC分类号: C07D263/58

    摘要: THE PROCESS FOR PREPARING BENZOXAZOLONES BY REACTING AN AROMATIC NITRO COMPUND, IN WHICH AT LEAST ONE OF THE TWO ORTHO POSITIONS IS UNSUBSTITUTED, WITH CARBON MONOXIDE AND CARBON DIOXIDE IN THE PRESENCE OF A CAYALYST AND RECOVERING THE BENZOXZOLONES PRODUCED THEREBY. THE CATALYST MAY BE A MIXTURE OF A HALIDE OF AN OXIDE OF PALLADIUM OR RHODIUM WITH AN OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF VANADIUM, MOLYBDENUM, TUNSTEN, NIOBIUM, CHROMIUM AND TANTALUM.