Process for the preparation of carboxylic acids of...

Details Process for the preparation of carboxylic acids of... Process for the preparation of carboxylic acids of...

C - Chemistry, Metallurgy

07

D

C07D 213/803 (2006.01) C07D 213/81 (2006.01) C07D 213/84 (2006.01)

Patent

CA 2539969

A process for the preparation of a carboxylic acid of a nitrogen-containing aromatic heterocyclic compound, which comprises the steps of reacting a nitrogen-containing aromatic heterocyclic compound with formamide in the presence of peroxodisulphuric acid or a peroxodisulphate and a strong acid to yield a carboxamide of the nitrogen-containing aromatic heterocyclic compound, and converting the carboxamide into the carboxylic acid by alkaline hydrolysis. The novel process is a carbamoylation process wherein the corresponding nitrogen-containing aromatic heterocyclic compound is reacted with formamide in the presence of peroxodisulphuric acid or a peroxodisulphate.

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