Process for preparing alkyl 3-hydroxy-2, 4, 5-trifluorobenzoates and/or alkyl 3-alkoxy-2, 4, 5-trifluorobenzoates

US5430173A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Ralf Pfirmann · Griesheim, DE
• Theodor Papenfuhs · Frankfurt, DE

Key dates

• Filing date: Sep 15, 1994
• Grant date: Jul 4, 1995
• Expiry date: Sep 15, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C69/88
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing alkyl 3-hydroxy-2,4,5-trifluorobenzoate and/or alkyl 3-alkoxy-2,4,5-trifluorobenzoate by reacting 3-hydroxy-2,4,5-trifluorobenzoic acid with a dialkyl carbonate at 80.degree. to 200.degree. C.