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Daniel G Anderson, David C England, Alwin S Milian Jr: Preparation of fluorocarbonyl compounds. E I Du Pont de Nemours and Company, James A Costello, November 2, 1982: US04357282 (99 worldwide citation)

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:


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