| 摘要 |
The present invention relates to a novel process for preparing pyridylmethyl isothiocyanates of the formula (I) in which R1 represents halogen or C1-C4-alkyl, characterized in that in a first step, amines of the formula (II) in which R1 is as defined above, are reacted with xanthogenates of the formula (III)R2O-CS-S(-)M(+)(III)in which R2 represents C1-C4-alkyl, preferably methyl or ethyl and M represents an alkali metal, preferably sodium and potassium or represents ammonium, if appropriate in the presence of a diluent, and in a second step, the resulting novel dithiocarbamates of the formula (IV) in which R1 and M are each as defined above, are oxidized, if appropriate in the presence of a diluent, to give the isothiocyanates of the formula (I).
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