Process for preparing hexafluorobutene

US5463150A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Norbert Lui · Odenthal, DE
• Albrecht Marhold · Leverkusen, DE
• Dietmar Bielefeldt · Ratingen, DE

Key dates

• Filing date: Feb 14, 1994
• Grant date: Oct 31, 1995
• Expiry date: Feb 14, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/25
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

1,1,1,4,4,4-Hexafluorobut-2-ene is prepared from chloro-fluorobutanes of the formula (I) EQU CF.sub.3 --CH.sub.2 --CHCl--CX.sub.3 (I) in which the individual radicals X independently of each other represent chlorine and/or fluorine, by reaction with alkali metal fluoride in an aprotic polar solvent.