Synthesis of hydrofluoroalkanols and hydrofluoroalkenes
AssigneeE. I. Du Pont de Nemours and Company
InventorsMario Joseph Nappa, Xuehui Sun, Lev Moiseevich Yagupolskii, Andrey Anatolievich Filatov, Vladimir Nikolaevich Boiko, Yurii Lvovich Yagupolskii
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Abstract
Described herein is a process for the manufacture of hydrofluoroalkanols of the structure RfCFClCHROH. Also described herein are methods of manufacturing hydrofluoroalkenes of the structure RfCF═CHR from halofluorocarbons of the structure RfCFX2. In particular, 2,3,3,3,-tetrafluoro-1-propene may be manufactured with this process. Also described are compounds of the formula RfCFClCHROC(═O)R′.
Claims5
A process for the manufacture of hydrofluoroalkenes of the structure RfCF═CHR, comprising reacting a hydrofluoroalkanol of structure RfCFXCHROH or a hydrofluoroalkoxide of structure RfCFXCHROMX, wherein M is a reactive metal in the +2 oxidation state, with a carboxylic acid anhydride and a reactive metal in a reaction solvent to form a hydrofluoroalkene, wherein Rf is selected from the group consisting of perfluoromethyl, perfluoroethyl, perfluoro-n-propyl, perfluoro-i-propyl, perfluoeo-n-butyl and perfluoro-i-butyl, X is selected Cl, Br and I, and R is selected from the group consisting of H, CH3, C2H5, n-C3H7, and i-C3H7.
Dependencies are inferred from the claim text.