Process for the preparation of compounds triazolone.

PREPARATION OF A COMPONENT 1,2,4-triazole-3-one substituted in the 4 AND 5 FOR A alkyl or aryl group and optionally in position 2 by an alkyl group, for reacting carbamic acid ester N- REPLACED BY A or aryl group with a hydrohalic A aromatic or aliphatic carboxylic acid, an alkyl optionally NSUSTITUIDO GROUP, IN THE PRESENCE OF STRONG BASE.