Process for preparing trifluoroacetyl fluoride

US5672748A · kind A · utility

Assignee

• SOLVAY (Société Anonyme) · BE

Inventors

• Frank Ebmeyer · Hattersheim, DE
• Tobias Metzenthin · Frankfurt, DE
• Gunter Siegemund · Hofheim, DE

Key dates

• Filing date: Jun 29, 1995
• Grant date: Sep 30, 1997
• Expiry date: Jun 29, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to the preparation of trifluoroacetyl fluoride by reacting trichloroacetyl chloride with anhydrous hydrogen fluoride in the gaseous phase on a catalyst which is obtainable by reacting a water-soluble chromium (III) salt with magnesium hydroxide or magnesium oxide in the presence of water, converting the reaction mixture into a paste, drying the paste and treating it with hydrogen fluoride.