2314-97-8Relevant articles and documents
Chemical Radical Synthesis in Gas Mixtures Induced by Infrared Multiple-Photon Dissociation
Bagratashvili, V. N.,Kuzmin, M. V.,Letokhov, V. S.
, p. 5780 - 5786 (1984)
Some experimental approaches to gas-phase radical chemical synthesis induced by the process of IR multiple-photon excitation of polyatomic molecules are considered.A comparison of laser and thermal initiation of gas-phase radical reaction is given.
THERMOLYSE DES HALOGENURES DE PERFLUOROALCANESULFONYLE
Oudrhiri-Hassani, M.,Brunel, D.,Germain, A.,Commeyras, A.
, p. 491 - 504 (1984)
Perfluoroalkanesulfonyl chlorides FSO2Cl; RF= CF3, C2F5, C4F9>, decompose thermally to give the corresponding perfluoroalkyl chlorides with evolution of SO2.The latter retards the reaction, but it is catalysed by copper which also inhibits the SO2 effect. 2-methyl-2-nitrosopropane traps the perfluoroalkyl free radicals.In the presence of a perfluoroalkyl iodide FI; R'not equal RF>, other products, RFI and RFCl, are obtained.A free radical chain-mechanism is then suggested.On the other hand, perfluorobutanesulfonyl fluoride is very stable thermally.
Preparation and properties of ZnBr(CF3)*2L - a convenient route for the preparation of CF3I
Naumann, Dieter,Tyrra, Wieland,Kock, Birgit,Rudolph, Werner,Wilkes, Bernd
, p. 91 - 94 (1994)
ZnBr(CF3)*2L (L=DMF, CH3CN) can easily be prepared by the reaction of CBrF3 with elemental zinc in better than 60percent yield.The reaction of ZnBr(CF3)*2DMF with iodine monochloride in DMF solution yields pure CF3I in better than 70percent yield via an ecologically less damaging reaction pathway than the decarboxylation route using silver or mercury trifluoroacetate.
Preparation of trifluoroiodomethane via vapour-phase catalytic reaction between pentafluoroethane and iodine
Mao, Aiqin,Wang, Hua,Tan, Linhua,Nin, Xiangyang,Pan, Renming
, p. 4640 - 4642 (2013)
A new route for preparing C33I has been developed via a reaction between C2HF5 and I2. The influence of reaction temperature and active components of the catalysts on the amount of C33I was investigated. The result suggests that the selectivity of the C33I can be controlled by reaction conditions and active component of catalyst. The process for the formation of C33I and by-products is also discussed.
Investigation of CF2 carbene on the surface of activated charcoal in the synthesis of trifluoroiodomethane via vapor-phase catalytic reaction
Yang, Guang-Cheng,Lei, Shi,Pan, Ren-Ming,Quan, Heng-Dao
, p. 231 - 235 (2009)
This paper investigates the synthetic mechanism of trifluoroiodomethane (CF3I) in the reaction of trifluoromethane and iodine via vapor-phase catalytic reaction. It is suggested that CF2 carbene is the key intermediate and is formed in the pyrolysis process of CHF3 at high temperature. However, in pyrolysis of CHF3 under activated charcoal (AC) existing conditions, no C2F4 was detected. H2 and 2-methyl-2-butene could not trap the CF2 carbene. When treating the remained compounds on the used AC with H2, CH4 is formed on the process. It is proposed that CF2 carbene combines with AC strongly and transfers into CF3 radical on heat. In addition, it is found that the AC is not only the catalyst supporter to form CF3I, but also a co-catalyst to promote the formation of CF2 carbene and CF3 radical.
Synthesis of Au(I) trifluoromethyl complexes. Oxidation to Au(III) and reductive elimination of halotrifluoromethanes
Blaya, Mara,Bautista, Delia,Gil-Rubio, Juan,Vicente, Jos
, p. 6358 - 6368 (2014)
Au(I) trifluoromethyl complexes [Au(CF3)L] (L = N-heterocyclic carbene (NHC), isonitrile, phosphine, P(OMe)3) and [Au2(CF3)2(-dppe)] are prepared by reaction of [Au(X)L] (X = Cl, I) or [Au2Cl2(-dppe)], respectively, with AgF and Me3SiCF3. The analogous reaction of PPN[Au(C6F5)Cl] (PPN+ = [Ph3PNPPh3]+) gives a mixture of complexes of the type PPN[Au(CF3)x(C6F5)2-x] (x = 0, 1, 2). Single crystals of the new complex PPN[Au(CF3)(C6F5)] are obtained by liquid diffusion from this mixture, and its crystal structure was determined by X-ray diffraction. Acyclic diaminocarbene complexes [Au(CF3){C(NEt2)(NHR)}] (R = tBu, 2,6-dimethylphenyl) are obtained by reaction of [Au(CF3)(CNR)] with NHEt2. Oxidation of the NHC complex [Au(CF3)(IPr)] (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) with PhICl2, Br2, I2 or ICl affords [Au(CF3)(X)(Y)(IPr)] (X = Y = Cl, Br I; X = Cl, Y = I). The dicloro, dibromo, and chloro(iodo) complexes are stable in solution in the dark. In contrast, the diiodo complex is unstable and decomposes to [AuI(IPr)] and ICF3. Under photoirradiation, complexes [Au(CF3)(X)(Y)(IPr)] undergo reductive elimination to give YCF3 and [AuX(IPr)] (X = Y = Cl, Br; X = Cl, Y = I).
Catalysts and integrated processes for producing trifluoroiodomethane
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Page/Page column 10-12, (2020/07/07)
The present disclosure provides a process for producing trifluoroiodomethane (CF3I). The process may include providing a vapor-phase reactant stream comprising trifluoroacetic acid and iodine and reacting the reactant stream in the presence of a catalyst to produce a product stream comprising the trifluoroiodomethane. The catalyst includes silicon carbide.
PROCESSES FOR PRODUCING TRIFLUOROIODOMETHANE
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Paragraph 0053-0055, (2020/03/09)
The present disclosure provides a gas-phase process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, and reacting the reactant stream in the presence of a catalyst at a temperature from about 200° C. to about 600° C. to produce a product stream comprising the trifluoroiodomethane.
ONE STEP PROCESS FOR MANUFACTURING TRIFLUOROIODOMETHANE FROM TRIFLUOROACETYL HALIDE, HYDROGEN, AND IODINE
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Paragraph 0048-0050, (2020/08/30)
The present disclosure provides a process for producing trifluoroiodomethane (CF3I). The process includes providing vapor-phase reactants including trifluoroacetyl halide, hydrogen, and iodine, heating the vapor-phase reactants, and reacting the heated vapor-phase reactants in the presence of a catalyst to produce trifluoroiodomethane. The catalyst includes a transition metal.
PROCESSES FOR PRODUCING TRIFLUOROIODOMETHANE AND TRIFLUOROACETYL IODIDE
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Paragraph 0102-0118, (2020/03/09)
The present disclosure provides a process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and at least one trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, reacting the reactant stream in the presence of a first catalyst at a first reaction temperature from about 25° C. to about 400° C. to produce an intermediate product stream comprising trifluoroacetyl iodide, and reacting the intermediate product stream in the presence of a second catalyst at a second reaction temperature from about 200° C. to about 600° C. to produce a final product stream comprising the trifluoroiodomethane.
