The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 2011
Filed:
Nov. 20, 2008
Mario Joseph Nappa, Newark, DE (US);
Xuehui Sun, Swedesboro, NJ (US);
Lev Moiseevich Yagupolskii, Kiev, UA;
Andrey Anatolievich Filatov, Kiev, UA;
Vladimir Nikolaevich Boiko, Kiev, UA;
Yurii Lvovich Yagupolskii, Kiev, UA;
Mario Joseph Nappa, Newark, DE (US);
Xuehui Sun, Swedesboro, NJ (US);
Lev Moiseevich Yagupolskii, Kiev, UA;
Andrey Anatolievich Filatov, Kiev, UA;
Vladimir Nikolaevich Boiko, Kiev, UA;
Yurii Lvovich Yagupolskii, Kiev, UA;
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Described herein is a process for the manufacture of hydrofluoroalkanols of the structure RCFClCHROH, comprising reacting a halofluorocarbon of the structure RCFX, wherein each X is independently selected from Cl, Br, and I, with an aldehyde and a reactive metal in a reaction solvent to generate a reaction product comprising a metal hydrofluoroalkoxide, neutralizing said metal hydrofluoroalkoxide to produce a hydrofluoroalkanol, and recovering the hydrofluoroalkanol. Also described herein are methods of manufacturing hydrofluoroalkenes of the structure RCF═CHR from halofluorocarbons of the structure RCFX, wherein each X is independently selected from Cl, Br, and I, comprising (1) reacting halofluorocarbons of the structure RCFX, wherein each X is independently selected from Cl, Br, and I, with an aldehyde and a reactive metal to generate a reaction product comprising a metal hydrofluoroalkoxide, and reductively dehydroxyhalogenating said metal hydrofluoroalkoxide to produce a hydrofluoroalkene or (2) reacting a hydrofluoroalkanol of the structure RCFXCHROH or a hydrofluoroalkoxide of the structure RCFXCHROMX, 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 and isolating the hydrofluoroalkene. In particular, 2,3,3,3,-tetrafluoro-1-propene may be manufactured with this process. Also described are compounds of the formula RCFClCHROC(═O)R'.