2252-84-8Relevant articles and documents
Photochemistry of Anhydrides Part 4.-Photolysis of Perfluoro-n-butyric Anhydride Reaction of n-C3F7 Radicals with Cyclohexane
Stock, Colin J.,Whittle, Eric
, p. 496 - 502 (1980)
The photolysis of the vapour of perfluoro-n-butyric anhydride was studied at 20 and 227 deg C.The effective primary process is (n-C3F7CO)2O+hυ -> 2 n-C3F7+CO+CO2 and the overall decomposition is quantitatively described by the equation (n-C3F7CO)2O+hυ -> n-C6F14+CO+CO2.The quantum yields of products increase with temperature but are independent of pressure. (n-C3F7CO)2O was photolysed in the presence of cyclohexane vapour.For the reactions n-C3F7+c-C6H12 -> n-C3F7H+c-C6H11 kH 2n-C3F7 -> C6F14 kc we obtain, log kH/k1/2c = (4.99+/-0.12)-(23910+/-750)/Θ where Θ = 2.303RTJmol-1 and kH/k1/2c is in cm1/2mol-1/2s-1/2.
HETEROCYCLIC POLYFLUORO-COMPOUNDS. PART 35. DEHYDROFLUORINATION OF 2,2-BIS(TRIFLUOROMETHYL)- AND 2-PERFLUOROALKYL-3,4-DIFLUORO-OXETANS
Barlow, M. G.,Coles, B.,Haszeldine, R. N.
, p. 387 - 396 (1980)
Solid potassium hydroxide dehydrofluorinates 2,2-bis-(trifluoromethyl)-3,4-difluoro-oxetan to 3-fluoro-4,4-bis-(trifluoromethyl)-2-oxete (59percent), 2-pentafluoroethyl-3,4-difluoro-oxetan to 2-tetrafluoroethylidene-3,4-difluoro-oxetan, and r-2-heptafluoro-n-propyl-t-3,t-4-difluoro-oxetan to (Z)-2-hexafluoro-n-propylidene-cis-3,4-difluoro-oxetan.Factors which affect these reactions are discussed.
Perfluoroalkyl Grignard Reagents: NMR Study of 1-Heptafluoropropylmagnesium Chloride in Solution
Guang, Jie,Hopson, Russell,Williard, Paul G.,Fujiu, Motohiro,Negishi, Kazuyuki,Mikami, Koichi
, p. 5922 - 5928 (2016/07/23)
We report on the generation of a perfluoroalkyl Grignard reagent (FRMgX) by exchange reaction between a perfluoroalkyl iodide (FR-I) and a Grignard reagent (RMgX). 19F NMR was applied to monitor the generation of n-C3F7MgCl. Additional NMR techniques, including 19F COSY, NOESY, and pulsed gradient spin-echo (PGSE) diffusion NMR, were invoked to assign peaks observed in 19F spectrum. Schlenk equilibrium was observed and was significantly influenced by solvent, diethyl ether, or THF.
Compositions
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Paragraph 0104; 0105, (2013/09/12)
A composition comprising HCFO-1233xf and at least one additional compound selected from the group consisting of HCFO-1233zd, HCFO-1232xd, HCFO-1223xd, HCFC-253fb, HCFC-233ab, HFO-1234yf, HFO-1234ze, ethylene, HFC-23, CFC-13, HFC-143a, HFC-152a, HFO-1243zf, HFC-236fa, HCO-1130, HCO-1130a, HFO-1336, HCFC-244bb, HCFC-244db, HFC-245fa, HFC-245cb, HCFC-133a, HCFC-254fb, HCFC-1131, HCFO-1242zf, HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca.
PROCESSES FOR THE PRODUCTION OF FLUOROPROPANES AND HALOPROPENES
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Page/Page column 15-17, (2008/12/05)
A process is disclosed for making CF3CF2CH3, CF3CF=CH2 and/or CF3CCI=CH2. The process involves reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CH2CH2X, halopropenes of the formula CX3CH=CH2 and halopropenes of the formula CX2=CHCH2X, wherein each X is independently F or Cl, with HF and CI2 in a reaction zone to produce a product mixture comprising HF, HCI, CF3CF2CH3, CF3CF=CH2, and CFsCCI=CH2; and recovering the CF3CF2CH3, CF3CF=CH2 and/or CFsCCI=CH2 from the product mixture. Also disclosed is a process for making CF3CH2CHF2, CFsCH=CHF, and/or CFaCH=CHCI. This process involves reacting at least one starting material selected from the group consisting of halopropenes of the formula CX3CH=CH2 and halopropenes of the formula CX2=CHCH2X, wherein each X is independently F or Cl, with HF and CI2 in a reaction zone to produce a product mixture comprising HF, HCI, CF3CH2CHF2, CFsCH=CHF and CF3CH=CHCI; and recovering the CF3CH2CHF2, CFsCH=CHF, and/or CF3CH=CHCI from the product mixture. The molar ratio of HF to the total amount of starting materials fed to the reaction zone for both of these processes is at least stoichiometric, and the molar ratio of Cl2 to total amount of starting material fed to the reaction zone for both of these processes is 2:1 or less.