431-89-0Relevant articles and documents
Polishchuk et al.
, p. 3933 (1970)
Absolute rates of intermolecular carbon-hydrogen abstraction reactions by fluorinated radicals
Shtarev, Alexander B.,Tian, Feng,Dolbier Jr., William R.,Smart, Bruce E.
, p. 7335 - 7341 (1999)
Using competition kinetic methodology, absolute rate constants for bimolecular hydrogen abstraction from a variety of organic substrates in solution have been obtained for the n-C4H9CF2CF2(·), n-C4F9(·), and i-C3F7(·) radicals. Fluorine substitution substantially increases the reactivity of alkyl radicals with respect to C-H abstraction, with the secondary radical being most reactive. A wide range of substrate reactivities (5200-fold) was observed, with the results being discussed in terms of an interplay of thermodynamic, polar, steric, stereoelectronic, and electrostatic/field effects on the various C-H abstraction transition states. Representative carbon-hydrogen bond dissociation energies of a number of ethers and alcohols have been calculated using DFT methodology.
Unusual conversion of perfluoromethylepoxycyclopentane into a linear β-aminovinylketone by C-C bond cleavage
Barten, Jan A.,Kadyrov, Alexander A.,Roeschenthaler, Gerd-Volker
, p. 101 - 103 (2002)
2,3,3,4,4,5,5-Heptafluoro-1-trifluoromethyl-1,2-epoxycyclopentane reacted with 2-isopropyl-acetophenone imine giving 2,3,3,4,4,5,5-heptafluoro-2-trifluoromethyl-1-(2′-isopropylimino- 2′-phenylethane) cyclopentan-1-ol, which in its turn underwent an intramolecular rearrangement yielding the linear 4,4,5,5,6,6,7,8,8,8-decafluoro-1-isopropylamino-oct-1-en-3-one, being characterized by X-ray structural analysis (triclinic, P-1, a = 920.5(2), b = 1027.9(3), c = 1127.4(3)pm, α = 110.99, β = 105.68°, γ = 96.75°).
METHOD AND APPARATUS FOR CONTINUOUSLY PRODUCING 1,1,1,2,3-PENTAFLUOROPROPANE WITH HIGH YIELD
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Paragraph 0110-0111, (2014/05/20)
A method and apparatus for method of continuously producing 1,1,1,2,3-pentafluoropropane with high yield is provided. The method includes (a) bringing a CoF3-containing cobalt fluoride in a reactor into contact with 3,3,3-trifluoropropene to produce a CoF2-containing cobalt fluoride and 1,1,1,2,3-pentafluoropropane, (b) transferring the CoF2-containing cobalt fluoride in the reactor to a regenerator and bringing the transferred CoF2-containing cobalt fluoride into contact with fluorine gas to regenerate a CoF3-containing cobalt fluoride, and (c) transferring the CoF3-containing cobalt fluoride in the regenerator to the reactor and employing the transferred CoF3-containing cobalt fluoride in Operation (a). Accordingly, the 1,1,1,2,3-pentafluoropropane can be continuously produced with high yield from the 3,3,3-trifluoropropene using a cobalt fluoride (CoF2/CoF3) as a fluid catalyst, thereby improving the reaction stability and readily adjusting the optimum conversion rate and selectivity.
Reactions of poly(hexafluoropropylene oxide) perfluoroisopropyl ketone with various amines
Howell, Jon L.,Friesen, Chadron M.,Laugesen, Krista L.,van der Ende, Alice E.
, p. 178 - 184 (2008/09/17)
The reaction of poly(hexafluoropropylene oxide) perfluoroisopropyl ketone, perfluoroethyl perfluoroisopropyl, or bis-perfluoroisopropyl ketone with various amines has been studied and the products identified. A comparison of the reactivity of the ketones with different amines is made and identified by mass spectroscopy. The reaction of diethyl amine with all three ketones leads to two unexpected products and the mechanism of their formation is considered.