Method for producing 4-cyano-2-aminomethylthiazole.

    公开(公告)号:ZA200200459B

    公开(公告)日:2004-05-26

    申请号:ZA200200459

    申请日:2002-01-18

    Applicant: BASF AG

    Abstract: The invention relates to processes for preparing 2-aminomethyl-4-cyanothiazole and its salts of the formulae Ia and Ibin whichn=1 or 2 andfor n=1, X is chloride, bromide, triflate and hydrogen sulfate andfor n=2, X is sulfate, which comprises the process step where the aminonitrile of the formula IIis stirred with a cysteine ester of the formula III,in which R is branched or linear C1-10-alkyl orwhere n=0, 1 or 2 and R is branched or linear C1-C10C10-alkyl or C1-C4-alkoxy or C1-C4-dialkylamino in an inert solvent in the presence of a base at from 0° C. to 80° C. until the reaction has essentially proceeded to completion, and to the compounds of the formulae Ia and Ib.

    95.
    发明专利
    未知

    公开(公告)号:BR0012710A

    公开(公告)日:2002-04-09

    申请号:BR0012710

    申请日:2000-07-11

    Applicant: BASF AG

    Abstract: The invention relates to processes for preparing 2-aminomethyl-4-cyanothiazole and its salts of the formulae Ia and Ibin whichn=1 or 2 andfor n=1, X is chloride, bromide, triflate and hydrogen sulfate andfor n=2, X is sulfate, which comprises the process step where the aminonitrile of the formula IIis stirred with a cysteine ester of the formula III,in which R is branched or linear C1-10-alkyl orwhere n=0, 1 or 2 and R is branched or linear C1-C10C10-alkyl or C1-C4-alkoxy or C1-C4-dialkylamino in an inert solvent in the presence of a base at from 0° C. to 80° C. until the reaction has essentially proceeded to completion, and to the compounds of the formulae Ia and Ib.

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