http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2009149445-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-23 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C21-18 |
| filingDate | 2009-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2011-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2009149445-A |
| titleOfInvention | Synthesis of Fluorinated Olefins from Fluorinated Alcohols |
| abstract | 1. Method for producing hydrofluoroalkene, RfCF=CH2, including: ! contacting a hydrofluoroalkanol of structure RfCF2CH2OH with a Lewis acid to obtain a mixture, diluting said mixture with a solvent to obtain a mixture in a solvent, reacting the mixture in the solvent with the active metal, heating the mixture in the solvent and the active metal for a period of time sufficient to obtain a hydrofluoroalkene, condensing and collecting volatile products containing hydrofluoroalkene, where Rf is F or a fluoro-substituted alkyl group. ! 2. The method according to claim 1, wherein said fluoro-substituted alkyl group Rf is CF3, C2F5, n-C3F7, iso-C3F7, n-C4F9 or CHF2CF2CF2-. ! 3. The method of claim 1 wherein the molar ratio of said Lewis acid to hydrofluoroalkanol is from about 1:1 to about 2:1. ! 4. The method according to claim 1, wherein said Lewis acid is selected from the group consisting of titanium (IV) halides, zirconium (IV) halides, hafnium (IV) halides, vanadium (III) halides, vanadium (IV) halides, niobium halides (V), tantalum (V) halides, boron (III) halides and aluminum (III) halides. ! 5. The method according to claim 1, wherein said Lewis acid is selected from the group consisting of: titanium tetrachloride, zirconium tetrachloride, hafnium tetrachloride, vanadium trichloride, vanadium tetrachloride, niobium pentachloride, tantalum pentachloride, boron trichloride, boron trifluoride, aluminum trichloride, chlorofluoride aluminum and aluminum fluoride. ! 6. The method of claim 1 wherein said solvent is selected from the group consisting of: diglyme, diethyl ether, tetrahydrofuran, triglyme, 1,4-dioxane, ethylene glycol dimethyl ether and mixtures thereof. ! 7. The method according to claim 1, where the said mixture is cooled to a temperature from about -10°C to about 15°C during |
| priorityDate | 2009-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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