PROCESS FOR THE PREPARATION OF HALOTHIOPHENE-2-CARBOXYLIC ACIDS

PROCESS FOR THE PREPARATION OF HALOTHIOPHENE-2-CARBOXYLIC ACIDS

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

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MACK, KARL-ERNST, MEIDERT, HELMUT, LITTERER, HEINZ
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention relates to a process for the preparation of halothiophene-2-carboxylic acids of the general formula where n = 1 or 2 Hal = halogen by oxidation of the appropriate halo-2-acylthiophenes of the general formula where x = 0 to 3. The oxidation is carried out in a solvent using oxygen in the presence of a catalyst.