Fluorinated carboxylic acid fluorides

US4987254A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Werner Schwertfeger · Altötting, DE
• Klaus Hintzer · Woodbury, US
• Peter Blickle · Hofheim, DE

Key dates

• Filing date: Aug 3, 1989
• Grant date: Jan 22, 1991
• Expiry date: Aug 3, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/58
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Fluorinated carboxylic acid fluorides of the formula I ##STR1## can be prepared from fluorinated vinyl ethers of the formula II ##STR2## by reacting the vinyl ethers with an oxygen-containing gas in the presence of a catalytic amount of a Lewis acid. Perfluorinated carboxylic acids and derivatives thereof can be prepared from the carboxylic acid fluorides by secondary reactions, for example hydrolysis, esterification or aminolysis.