Process for the preparation of halothiophene-2-carboxylic acids

Details Process for the preparation of halothiophene-2-carboxylic acids Process for the preparation of halothiophene-2-carboxylic acids

C - Chemistry, Metallurgy

07

D

260/329.4

C07D 333/38 (2006.01)

Patent

CA 1279066

ABSTRACT OF THE DISCLOSURE The invention relates to a process for the preparation of halothiophene-2-carboxylic acids of the general formula where n = 1 or 2 Image Hal = halogen by oxidation of the appropriate halo-2-acylthiophenes of the general formula Image where x = 0 to 3. The oxidation is carried out in a solvent using oxygen in the presence of a catalyst.

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