374-39-0Relevant academic research and scientific papers
METHOD FOR PRODUCING HEXA-FLUORO-BUTENE
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Paragraph 0058-0059, (2017/04/03)
PROBLEM TO BE SOLVED: To provide a method for simply and efficiently producing an industrially useful hexa-fluoro-butene having a low boiling point by combining fluorine-containing olefins such as industrially easily available octa-fluoro-butene and hexa-fluoro-propylene or the like under a mild condition. SOLUTION: Provided is a method for producing hexa-fluoro-butene in which, under the presence of a metal-carbene complex compound (10) having an olefin metathesis reaction activity, a particular combination between a fluorine-containing 1-butene and an ethylene or fluorine-containing ethylene, or a particular combination between a fluorine-containing propene and a fluorine-containing propene is reacted by cross-metathesis reaction. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPO&INPIT
Impact of fluorine substituents on the rates of nucleophilic aliphatic substitution and β-elimination
Martinez, Henry,Rebeyrol, Adele,Nelms, Taylor B.,Dolbier Jr., William R.
experimental part, p. 167 - 175 (2012/03/27)
A measure of the quantitative effect of proximate fluorine substituents on the rates of SN2 and E2 reactions has been obtained through a study mainly of reactions of fluorinated n-alkyl bromides with weak base, strong nucleophile azide ion and strong base/nucleophile methoxide ion in the protic solvent methanol and the aprotic solvent, DMSO. The order of reactivity for SN2 reactions of azide in methanol at 50 °C was found to be: n-alkyl-Br > n-alkyl-CHFBr > n-perfluoroalkyl-CH2CH 2Br n-perfluoroalkyl-CH2Br > n-alkyl-CF2Br. Approximate relative rates of reaction were: 1, 0.20, 0.12, 1 × 10 -4, -5. The order of reactivity for E2 reactions was found to be: n-perfluoroalkyl-CH2CH2Br n-alkyl-CF2Br > n-alkyl-CHFBr > n-alkyl-Br. The approximate relative rates for reaction of methoxide in methanol at 50 °C were: 1100, 4.4, 1.9, 1.
Synthesis of hydrofluoroalkanols and hydrofluoroalkenes
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Page/Page column 9/1, (2009/06/27)
Described herein is a process for the manufacture of hydrofluoroalkanols of the structure RfCFClCHROH, comprising reacting a halofluorocarbon of the structure RfCFX2, 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 RfCF═CHR from halofluorocarbons of the structure RfCFX2, wherein each X is independently selected from Cl, Br, and I, comprising (1) reacting halofluorocarbons of the structure RfCFX2, 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 RfCFXCHROH or a hydrofluoroalkoxide of the 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 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 RfCFClCHROC(═O)R′.
