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US 4,357,282 AGranted
Preparation of fluorocarbonyl compounds
AssigneeE. I. Du Pont de Nemours and Company
InventorsDaniel G. Anderson, David C. England, Alwin S. Milian, Jr.
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AssigneeE. I. Du Pont de Nemours and Company
InventorsDaniel G. Anderson, David C. England, Alwin S. Milian, Jr.
Estimating the term…
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: 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.
A method of preparing fluorinated carbonyl compounds which comprises contacting a fluorinated methyl or ethyl ether containing at least one methoxylated carbon atom-containing group selected from the group consisting of ##STR60## wherein R.sup.3 is CH.sub.3 or C.sub.2 H.sub.5, with a catalyst selected from the group consisting of
A method of preparing the carbonyl compound, R.sup.3 O.sub.2 CCF.sub.2 COF, wherein R.sup.3 is CH.sub.3 or C.sub.2 H.sub.5, by contacting a fluorinated methyl or ethyl ether, R.sup.3 O.sub.2 CCF.sub.2 CF.sub.2 OR.sup.3, with AlCl.sub.3, AlBr.sub.3 or AlI.sub.3 at a temperature of 60.degree. to 140.degree. C.
Dependencies are inferred from the claim text.