METHOD FOR PRODUCING 2-AMINOMETHYL-4-CYANO-THIAZOL

    公开(公告)号:CA2380084A1

    公开(公告)日:2001-02-01

    申请号:CA2380084

    申请日:2000-07-11

    Applicant: BASF AG

    Inventor: PFEIFFER THOMAS

    Abstract: The present invention relates to a method for producing 2-aminomethyl-4-cyan o- thiazol and salts thereof of general formulae (Ia) and (Ib) where n is 1 or 2; when n is 1, then X is chloride, bromide, triflate and hydrogen sulphate; an d when n is 2, then X is sulphate. The method involves stirring thioamide of formula (IV) with a bromopyruvic acid ester of formula (V), in which R1 is a linear or branched C1-4, in a R2OH alcohol, wherein R2 is a linear or branch ed C1-8 alkyl, HO-CH2-CH2-, HO-CH2-CH2-CH2- or C1-4 alkyl-O-CH2-CH2-. Said stirring process is carried out at a temperature of -5~ C to 40~ C until the reaction of the thioamide of formula (IV) is practically complete. This invention also relates to the compounds of formulae (Ia) and (Ib).

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