Ortho-nitrophenol manufacture
    4.
    发明授权
    Ortho-nitrophenol manufacture 失效
    ORTHO-NITROPHENOL制造

    公开(公告)号:US3804907A

    公开(公告)日:1974-04-16

    申请号:US9659070

    申请日:1970-12-09

    Applicant: TEXACO INC

    Inventor: KABLAOUI M

    CPC classification number: C07C201/12 C07C205/22

    Abstract: METHOD OF PREPARING O-NITROPHENOL PRODUCT COMPRISING CONTACTING NITROBENZENE WITH SODIUM HYDROXIDE IN THE PRESENCE OF A CATALYTIC MIXTURE OF POTASSIUM T-BUTYL OXIDE AND O-NITROPHENOL WHILE SIMULTAEOUSLY PASSING AN OXYGEN CONTAINING GAS THERETHROUGH, ACIDIFYING THE RESULTANT MIXTURE TO A PH LESS THAN 7 UNDER AQUEOUS CONDITIONS AND RECOVERING 0-NITROPHENOL PRODUCT FROM THE ACIDIFIED MIXTURE. ORTHO-NITROPHENOL IS USED IN THE PREPARATION OF OAMINOPHENOL WHICH IN TURN IS TURN IS USEFUL IN THE PREPARATION OF DYES, PHARMACEUTICALS AND PHOTOGRAPHIC CHEMICALS.

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