PROCESS FOR PREPARING NEW INTERMEDIATE USABLE IN PROCESS FOR PREPARING OXO COMPOUNDS

    公开(公告)号:YU45519B

    公开(公告)日:1992-05-28

    申请号:YU136489

    申请日:1989-07-10

    Applicant: CIBA GEIGY AG

    Inventor: AUFDERHAAR E

    Abstract: The invention relates to a process for the manufacture of the known 5-carbamoyl-10-oxo-10,11-dihydro-5H-dibenz[b,f]azepine of the formula III which is characterized in that, for example, 5-cyano-5H-dibenz[b,f]azepine of the formula I is nitrated to form 5-cyano-10-nitro-5H-dibenz[b,f]azepine of the formula II, this is subjected to hydrolysis, then reduction, then the reduction product contained in the reaction mixture is subjected to hydrolysis and the end product of the formula III is isolated in pure form. The process is illustrated by the following reaction scheme: +TR The invention relates also to new intermediates produced in these reactions.

    PROCESS FOR PREPARING NEW INTERMEDIATE USABLE IN PROCESS FOR PREPARING OXO COMPOUNDS

    公开(公告)号:YU45520B

    公开(公告)日:1992-05-28

    申请号:YU136589

    申请日:1989-07-10

    Applicant: CIBA GEIGY AG

    Inventor: AUFDERHAAR E

    Abstract: The invention relates to a process for the manufacture of the known 5-carbamoyl-10-oxo-10,11-dihydro-5H-dibenz[b,f]azepine of the formula III which is characterized in that, for example, 5-cyano-5H-dibenz[b,f]azepine of the formula I is nitrated to form 5-cyano-10-nitro-5H-dibenz[b,f]azepine of the formula II, this is subjected to hydrolysis, then reduction, then the reduction product contained in the reaction mixture is subjected to hydrolysis and the end product of the formula III is isolated in pure form. The process is illustrated by the following reaction scheme: +TR The invention relates also to new intermediates produced in these reactions.

    PROCESS FOR PREPARING NEW INTERMEDIATE USABLE IN PROCESS FOR PREPARING OXO COMPOUNDS

    公开(公告)号:YU136489A

    公开(公告)日:1990-02-28

    申请号:YU136489

    申请日:1989-07-10

    Applicant: CIBA GEIGY AG

    Inventor: AUFDERHAAR E

    Abstract: The invention relates to a process for the manufacture of the known 5-carbamoyl-10-oxo-10,11-dihydro-5H-dibenz[b,f]azepine of the formula III which is characterized in that, for example, 5-cyano-5H-dibenz[b,f]azepine of the formula I is nitrated to form 5-cyano-10-nitro-5H-dibenz[b,f]azepine of the formula II, this is subjected to hydrolysis, then reduction, then the reduction product contained in the reaction mixture is subjected to hydrolysis and the end product of the formula III is isolated in pure form. The process is illustrated by the following reaction scheme: +TR The invention relates also to new intermediates produced in these reactions.

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