Preparation of fluorocarbonyl compounds

US4357282A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Daniel Griffith Anderson · Framingham, US
• David C. England · Wilmington, US
• Alwin S. Milian, Jr. · Wilmington, US

Key dates

• Filing date: Apr 3, 1981
• Grant date: Nov 2, 1982
• Expiry date: Apr 3, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C49/88
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Fluorinated carbonyl compounds are prepared by contacting a fluorinated methyl or ethyl ether containing at least one methoxylated carbon atom-containing group selected from: --CF.sub.2 OR.sup.3, .dbd.CFOR.sup.3, ##STR1## wherein R.sup.3 is CH.sub.3 or C.sub.2 H.sub.5, with a catalyst selected from: PA0 SbX.sub.5, TaX.sub.5, NbX.sub.5, AsX.sub.5, BiX.sub.5, TiX.sub.4, ZrX.sub.4, HfX.sub.4, FeX.sub.3, mixtures of SbX.sub.3 and SbX.sub.5, ZM'X'.sub.6, and mixtures of ZM'X'.sub.6 and M'X.sub.5 where X, independently, is F, Cl, Br or I, X' is F or Cl; and Z is H, NO, O.sub.2, alkali metal or NY.sub.4 where Y, independently, is H or alkyl of 1 to 6 carbon atoms, and M' is Sb or As at a temperature of -20.degree. to 200.degree. C.