684-32-2Relevant articles and documents
Preparation method of perfluoroketone
-
Paragraph 0066; 0067, (2018/09/13)
The invention discloses a preparation method of perfluoroketone. According to the preparation method, in an organic solvent, in the presence of a catalyst metal fluoride and a cosolvent, an addition reaction is performed on perfluoroolefin R1R2C=CR3R4 (R1, R2, R3 and R4 adopt a general formula of CnF2n+1 and n is a non-negative integer set) and acyl fluoride R5-COF (R5 adopts a general formula ofCmF2m+1 and m is a non-negative integer set) to obtain the perfluoroketone CFR3R4-CR1R2-COR5 (R5 is perfluoroalkyl) or CFR3R4-CR1R2-C(O)-CR1R2-CFR3R4 (R5 is an F atom). By the preparation method, theperfluoroolefins and the acyl fluoride are easy to obtain and low in price and the yield of perfluoroketone is high; a route is easy to industrialize.
Catalytic synthesis of certain perfluorinated ketones and study of their structure by 19F NMR spectroscopy
Fenichev,Berenblit,Bispen,Lebedev,Moldavskii
, p. 1243 - 1251 (2014/02/14)
An efficient catalyst of a perfluorinated ketone synthesis of a high selectivity in the absence of solvent was proposed. Products of reaction of perfluorinated fluorides of various structures with tetrafluoroethylene and hexafluoropropylene in the presence of efficient catalysts without solvent were examined. The structure of the resulting products and their isomeric composition were identified by 19F NMR spectrscopy. Pleiades Publishing, Ltd., 2013.
A process for preparing acylfluorides
-
Page column 6, (2008/06/13)
A process for preparing acylfluorides by reaction of carbonyl fluoride COF2 with compounds having general formula:T = CR1R2 wherein:T is O or CF2R1 and R2, equal or different, are F or a R(O)t radical, wherein R = linear or branched C1-C7 (per)fluoroalkyl, optionally containing one or more oxygen atoms, t is an integer equal to zero or 1; wherein a catalyst supported on porous compound is used, the catalyst being selected from: CsF, RbF, KF, AgF, each optionally in admixture with one or more of the others.
Reductive alkylation of perfluorocarboxylic acid esters with CCl 3F or CCl4 and synthesis of higher linear perfluoroketones
Zeifman, Yu.V.,Postovoi
, p. 1815 - 1819 (2007/10/03)
Barbier-type reductive alkylation of perfluorocarboxylic acid esters (I) with CFCl3 and activated Al was successfully performed to give α,α-dichloroperfluoroketones (II). A similar reaction of CF 3COOEt with CCl4 and Al provided a convenient synthesis of CF3COCCl3. Ketones (II) were fluorinated further with SbF5 to form higher linear perfluoroketones (IX). An alternative approach to the synthesis of ketones (IX) was proposed by reductive perfluoroalkylation of esters (I) under the action of RFI and Al.
Process for preparing acylfluorides
-
Page 3, (2010/02/05)
A process for preparing acylfluorides by reaction of carbonyl fluoride COF2 with compounds having general formula: T=CR1R2 ??(I) wherein: T is O or CF2 R1 and R2, equal or different, are F or a R(O)t radical, wherein R=linear or branched C1-C7 (per)fluoroalkyl, optionally containing one or more oxygen atoms, t is an integer equal to zero or 1; wherein a catalyst supported on porous compound is used, the catalyst being selected from: CsF, RbF, KF, AgF, each optionally in admixture with one or more of the others.
Electrophilic reactions of fluorocarbons under the action of aluminum chlorofluoride, a potent Lewis acid
Petrov, V. A.,Krespan, C. G.,Smart, B. E.
, p. 138 - 142 (2007/10/03)
A new Lewis acid - aluminum chlorofluoride - was demonstrated to be an effective catalyst for the isomerisation of fluoroolefins, polyfluorinated epoxides and cyclopropanes.At ambient temperature this catalyst converts perfluorobutadiene-1,3 into perfluorobutyne-2 and perfluoro(4-methylpentene-2) into perfluoro(2-methylpentene-2) in nearly quantitative yield.At 100 deg C, aluminum chlorofluoride causes the cleavage of perfluorinated tertiary amines. - Keywords: Electrophilic reactions; Fluorocarbons; Aluminum chlorofluoride; Lewis acid; NMR spectroscopy
ISOMERIC TRANSFORMATIONS OF INTERNAL PERFLUORINATED α-OXIDES
Zapevalov, A.Ya.,Filyakova, T.I.,Kolenko, I.P.,Kodess, M.I.
, p. 80 - 85 (2007/10/02)
The isomeric transformation of the oxides of internal perfluorinated olefins into ketones by the action of alkali-metal fluorides and antimony pentafluoride were studied.The direction of opening of the α-oxide ring in the unsubstituted perfluorinated olefins in the presence of alkali-metal fluorides is determined largely by steric factors.Opening of the epoxide ring by the action of antimony pentafluoride is equally probable in both possible directions.
