13.
    发明专利
    未知

    公开(公告)号:NO20020327D0

    公开(公告)日:2002-01-22

    申请号:NO20020327

    申请日:2002-01-22

    Applicant: BASF AG

    Inventor: PFEIFFER THOMAS

    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 and,for n=1, X is chloride, bromide, triflate and hydrogen sulfate andfor n=2, X is sulfate, comprising the process step where the thioamide of the formula IVis stirred with a bromopyruvate of the formula V,in which R is branched or linear C1-4-alkyl in an alcohol R OH in which R is branched or linear C1-8-alkyl, HO-CH2-CH2-, HO-CH2-CH2-CH2- or C1-4-alkyl- O-CH2-CH2- at from -5° C. to 40° C. until the conversion of the thioamide IV has essentially gone to completion, and to the compounds of the formulae Ia and Ib.

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