Abstract: According to the invention there is proposed a process for the preparation of 4,4,4-trifluoro-3-methylamino-crotonic acid esters by dehydrating trifluoroacetoacetic acid esters and methylamine in the presence of an inert reaction medium and of a C1-C4carboxylic acid, in which process the reaction is carried out at a temperature of from 75 to 100° C. without isolation of intermediates and the water that forms during the reaction is removed continuously from the reaction medium.

Abstract: To provide a practical method of manufacturing fluorine compounds in a small number of steps that can carry out fluorination reaction of substrates using easily available fluorinating agents that can be inexpensively produced industrially, and recover precursors of the fluorinating agents generated accompanying the reaction quantitatively in an easy operation, and a method of recovery and regeneration of the precursors of the fluorinating agents.

Abstract: The process for producing perfluorocarbons according to the present invention is characterized in that in the production of a perfluorocarbon by contacting an organic compound with a fluorine gas, the organic compound is contacted with the fluorine gas at a temperature of from 200 to 500° C. and the content of an oxygen gas within the reaction system is controlled to 2% by volume or less based on the gas components in the reaction starting material, whereby a perfluorocarbon reduced in the content of impurities is produced.

Abstract: Functional optical materials for optical systems that are typically useful in optical waveguides, optical switching systems, optical modulators, optical computing systems and the like. Included are polymer systems and electrooptical chromophores. Polymers are thermoplastic and/or thermosetting polymers and are blended or co-polymerized with the electrooptic chromophore. The thermoplastic or thermosetting polymer selected from an acrylic/methacrylic, polyester, polyurethane, polyimide, polyamide, epoxy resin, or hybrid (organic-inorganic) or nanocomposite polyester polymer. The electrooptic chromophore is selected from a substituted aniline, substituted azobenzene, substituted stilbene, or substituted imine. Methods for improving adhesion promotion for the various novel materials are also provided.

Abstract: A light-emitting polymer and its preparation method, the polymer being excellent in electron injection and transport ability as well as hole injection and transport ability in an EL device, the EL device manufactured from the polymer being also emittable in the blue emission region, in which the EL device from an inorganic material is not mostly emittable. The light-emitting polymer of the invention is an alternated copolymer having repeated units (arylenevinylene units) excellent in hole injection and transport ability and repeated units (fluorinated tetraphenyl units) excellent in electron injection and transport ability with alternated order, as shown in formula (II). An EL device manufactured from the light-emitting polymer, a fluorinated tetraphenyl derivative of formula (I), which is used as a monomer to prepare the light-emitting polymer, and their preparation methods.

Abstract: The invention relates to a process for the preparation of 1,1,1-trifluoro-2,2-dichloroethane (F123). This process consists in bringing 1,1,1-trifluoro-2-chloroethane (F133a) into contact with chlorine in the presence of hydrogen fluoride and of a fluorination catalyst. The F133a can be obtained by chlorination of trichloroethylene and the F123 can subsequently be fluorinated to F125.

Abstract: According to the invention, 2,3,4,5-tetrachlorobenzotrifluoride is prepared by chlorinating 4-chlorobenzotrifluoride with elementary chlorine. The chlorination is conducted in the presence of 0.1 to 2 wt. % iron (III) chloride and 0.5 to 0.75 wt. % aluminum (III) chloride, each with regard to 4-chlorobenzotrichloride, whereby the weight ratio of iron (III) chloride to aluminum (III) chloride ranges from 10:1 to 1:1.

Abstract: This invention relates to a novel class of halofluorinated acrylates and more particularly to chlorofluorinated or bromofluorinated acrylates characterized by a chlorofluorinated or bromofluorinated alkylene moiety with acrylate functions at both terminals. These chlorofluorinated acrylates may be photocured in the presence of a photoinitiator into transparent polymers useful as optical waveguiding materials.

Abstract: Acids having a pKa of less than about 4 may be used to stabilize certain perfluoroalkyl alkyl ketones, particularly a substantially pure perfluoroalkyl alkyl ketone, a substantially pure aqueous solution of a perfluoroalkyl alkyl ketone or a substantially pure hydrate of a perfluoroalkyl alkyl ketone.

Abstract: The invention relates to a process for preparing 1,1,1-trifluoro-2,2-dichloroethane (F123).

Abstract: Compounds of formula I, II and III, wherein wherein R1 is for example hydrogen, C1-C12alkyl, C3-C30cycloalkyl, C2-C12alkenyl, C4-C8cycloalkenyl, phenyl, which is unsubstituted or substituted, naphthyl, anthracyl or phenanthryl, unsubstituted or substituted, heteroaryl radical which is unsubstituted or substituted; wherein all radicals R1 with the exception of hydrogen can additionally be substituted by a group having a —O—C-bond or a —O—Si-bond which cleaves upon the action of an acid; R′1 is for example phenylene, naphthylene, diphenylene or oxydiphenylene, wherein these radicals are unsubstituted or substituted; R2 is halogen or C1-C10haloalkyl; R3 is for example C1-C18alkylsulfonyl, phenylsulfonyl, naphthylsulfonyl, anthracylsulfonyl or phenanthrylsulfonyl, wherein the groups are unsubstituted or substituted, or R3 is e.g.

Abstract: Ionic perfluorovinyl compounds and their uses as components of ionic conductors of the polymer type, of selective membranes or of catalysts. The compounds comprise at least one perfluorovinyl group and at least one group chosen from —O or one of the groups C≡N, —C(C≡N)2, —NSO2R or —C[SO2R]2 or a pentacyclic group comprising at least one N, C—C≡N, CR, CCOR or CSO2R group. The compounds and/or their polymers are of use in the preparation of ionically conducting materials, electrolytes and selective membranes.

Abstract: The present invention is a chemical reactor and method for catalytic chemical reactions having gas phase reactants. The chemical reactor has reactor microchannels for flow of at least one reactant and at least one product, and a catalyst material wherein the at least one reactant contacts the catalyst material and reacts to form the at least one product. The improvement, according to the present invention is: the catalyst material is on a porous material having a porosity that resists bulk flow therethrough and permits molecular diffusion therein. The porous material further has a length, a width and a thickness, the porous material defining at least a portion of one wall of a bulk flow path through which the at least one reactant passes.

Abstract: The invention relates to mixtures of 1,1,1,3,3-pentafluoropropane and 1,1,1,3,3-pentafluorobutane. The blends are useful as blowing agents for polymer foam, solvents, aerosol propellants and heat transfer media.

Abstract: N-fluorotriazinium salts, especially those of the following Formula I, are electrophilic fluorinating agents useful in fluorinating, preferably in a nitromethane solvent, carbanionic species and/or activated aromatic compounds: 1

Abstract: Compounds each having a —CH2—CHF— group and a number of carbon atoms of 4 or above are prepared by hydrogenating a compound having a —CCl═CF— group and a number of carbon atoms of 4 or above in the presence of a noble metal catalyst in a liquid or gas phase. The compound having a —CCl═CF— group and a number of carbon atoms of 4 or above is preferably a C4-C10 alicyclic one, and can be prepared by reacting a compound having a —CCl═CCl— group and a number of carbon atoms of 4 or above with a fluorinating agent.

Abstract: The polymerizable compound of this invention is represented by general formula (I): where R is H, R′, R′O, R′COO, or R′OCO, R′ is a linear or branched alkyl group or alkenyl group having 1 to about 15 carbon atoms, A1 and A2 are independently a cyclohexane ring or a benzene ring which may include a substituent represented by formula (II) below; X is H or CH3; and Y1, Y2, Y3, and Y4 are independently H, F, Cl, CH3, CH3O, CF3, or CF3O wherein at least two of Y1, Y2, Y3, and Y4 are H and, if both A1 and A2 are cyclohexane rings, at least one of Y1, Y2, Y3, and Y4 is not H: where Y5, Y6, Y7, and Y8 are independently H, F, Cl, CH3, CH3O, CF3, or CF3O, at least two of Y5, Y6, Y7, and Y8 are H.

Abstract: A process for fluorinating a hydrocarbon substrate is by mixing it with an inert diluent and mixing the diluted substrate with a gaseous fluorinating reagent to form a foam reaction mixture. The fluorinating reagent reacts with the substrate in the form to foam product. The foam is separated into a liquid component which contains product and a gas component. Product is withdrawn from the liquid component which is then returned to the diluting step. Fluorinating reagent is fed into the gas component which is then recirculated to the mixing step. An installation for fluorinating a hydrocarbon substrate includes, in sequence as a circuit, a dilution stage, a mixing stage, a reaction stage and a separation stage. Liquid returning means feeds liquid from the separation stage to the dilution stage, and gas recirculation means feeds gas from the separation stage to the mixing stage.

Abstract: The present invention relates to iodonium salts containing urethane groups of reduced crystallization tendency, to a process for their preparation, and to their use for the radiation curing of cationically curing compositions.

Abstract: A process is disclosed for producing the pentafluoropropenes of the formula CF 3 CX═CF 2 , where X is H or Cl. The process involves hydrodehalogenating CF 3 CCl 2 CF 3 with hydrogen at an elevated temperature in the vapor phase over a catalyst comprising an elemental metal, metal oxide, metal halide and/or metal oxyhalide (the metal being copper, nickel, chromium and the halogen of said halides and said oxyhalides being fluorine and/or chlorine).

Abstract: A gold-lined pyrolysis reactor is used to pyrolyze compounds to form fluoroolefins like tetrafluoroethylene and hexafluoropropylene in high yield, with minimum to no formation of perfluoroisobutylene, chlorotrifluoroethylene, coke, salts, or polymer.

Abstract: Fluoroalkanes such as fluoromethane labeled with 17F are produced by contacting 17F labeled F2 with alkanes, preferably methane, substituted or unsubstituted alkenes, or substituted or unsubstituted alkynes in the presence of a metal oxide catalyst, preferably a silver oxide catalyst, to produce the 17F labeled fluoroalkane. The 17F may be produced by irradiating 20Ne with protons, preferably having an energy of about 11 MeV and produced by a cyclotron. The 17F labeled fluoromethane or fluoroalkanes may be produced continuously. A method for determining the location of an 17F labeled tracer includes generating an 17F labeled fluoroalkane, administering the 17F labeled fluoroalkane to a test subject, and scanning the test subject with a radiosensitive detector such as a positron emission tomography scanner.

Abstract: The present invention relates to fluoroalkyl phosphates, to a process for the preparation, and to their use as conductive salts in batteries, capacitors, supercapacitors and galvanic cells.

Abstract: The invention provides a process for producing a fluorine-containing compound from an inexpensive material.

Abstract: The invention relates to a process for purifying a crude 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate containing an impurity. The process includes bringing the crude 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate into contact with a poor solvent in which 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate is substantially insoluble, thereby removing the impurity from the crude 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate. Alternatively, the process includes precipitating crystals of 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate from a solution of the crude 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate. Thus, it is possible to produce 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate of high purity. This product makes it easy to produce 1,1,1,5,5,5-hexafluoroacetylacetone of high purity.

Abstract: This invention relates to a novel class of halofluorinated acrylates and more particularly to chlorofluorinated or bromofluorinated acrylates characterized by a chlorofluorinated or bromofluorinated alkylene moiety with acrylate functions at both terminals. These chlorofluorinated acrylates may be photocured in the presence of a photoinitiator into transparent polymers useful as optical waveguiding materials.

Abstract: A process for fluorinating a hydrocarbon substrate is by mixing it with an inert diluent and mixing the diluted substrate with a gaseous fluorinating reagent to form a foam reaction mixture. The fluorinating reagent reacts with the substrate in the form to foam product. The foam is separated into a liquid component which contains product and a gas component. Product is withdrawn from the liquid component which is then returned to the diluting step. Fluorinating reagent is fed into the gas component which is then recirculated to the mixing step. An installation for fluorinating a hydrocarbon substrate includes, in sequence as a circuit, a dilution stage, a mixing stage, a reaction stage and a separation stage. Liquid returning means feeds liquid from the separation stage to the dilution stage, and gas recirculation means feeds gas from the separation stage to the mixing stage.

Abstract: A method of fluorinating a halogenated organic substance comprising the steps of: introducing a germanium fluoride compound to a halogenated organic substance at a temperature between 250 and 320° C. to increase the fluorine content of the halogenated organic substance, thereby forming a fluorinated organic substance and a halogenated germanium compound, and separating the fluorinated organic substance and the halogenated germanium compound.

Abstract: Selected novel partially fluorinated &agr;,&ohgr;-dienes can be free radically (co)polymerized to form polymers in which cyclic structures are present. The polymers are useful for films, coatings and molded parts.

Abstract: The invention relates to the synthesis of difluoromethane by gas-phase catalytic fluorination of methylene chloride.

Abstract: There is provided a process for the preparation of 1,1,1-trichlorotrifluororethane in which 1,1-dichloro-2,2,2-trifluoroethane is subjected to chlorination by bringing the 1,1-dichloro-2,2,2-trifluoroethane into contact with chlorine within a reaction vessel characterised in that the process is conducted in the liquid phasein the presence of a chemical free radical initiator under a pressure of from 1 to 20 bar and at a temperature within the range 50 to 120° C., and the product is separated from the reaction mixture by fractional distillation. The product is useful in the manufacture of insecticides.

Abstract: A process is provided for the chlorination of aliphatic hydrocarbons containing 1 to 4 carbon atoms using hydrogen chloride as the source of chlorine. The process comprises reaction steps operated in tandem in separate zones. First, an unsaturated aliphatic fluorocarbon is oxychlorinated to give the corresponding saturated perchlorofluorocarbon and water, and second, the saturated perchlorofluorocarbon is reacted in the vapor phase with a hydrocarbon to produce the desired chlorinated hydrocarbon, hydrogen chloride and the unsaturated aliphatic fluorocarbon, third, hydrogen chloride and unsaturated aliphatic fluorocarbon are separated from the chlorinated hydrocarbon and recycled to the first step, and fourth, the chlorinated hydrocarbon is further purified by subjecting it to addition chlorination to convert traces of unsaturated aliphatic fluorocarbon to the corresponding saturated perchlorofluorocarbon, which is separated and recycled to the second step.

Abstract: A method for producing a high purity of perfluoroethane from hydrofluoroethane (C.sub.2 F.sub.x H.sub.y 1.ltoreq.x, 1.ltoreq.y.ltoreq.5, x+y=6). Cobalt difluoride (CoF.sub.2) as a catalyst is activated into cobalt trifluoride (CoF.sub.3) as a result of the contact reaction with fluorine gas in a reactor. The reactor is purged by removing the fluorine gas remaining in the reactor. The remaining gas is allowed to react with sulfur to give sulfur hexafluoride (SF.sub.6) which is then removed. The hydrofluoroethane is converted into perfluoroethane as a result of the catalyst of the activated cobalt trifluoride at 300-350.degree. C. The feedstock is safer and less corrosive than triple bond-containing compounds such as acetylene. In the method of the present invention, the formation of CF.sub.4 is extremely restrained and no inert gases are employed, so that a very high purity of C.sub.2 F.sub.6 can be obtained at a high conversion rate.

Abstract: A system and process for producing a fluorinated organic compound, said process comprising (a) reacting an organic compound with a fluorinations agent in the presence of a liquid-phase fluorinations catalyst to produce a product stream; (b) scrubbing said product stream to remove a substantial portion of said catalyst to form a low-catalyst content product stream; and (c) recovering said fluorinated organic compound from said low-catalyst content stream.

Abstract: A method of etching comprising subjecting a material under plasma etching conditions to an etching composition comprising at least an etchant compound having the formula C.sub.X H.sub.C F.sub.Zwherein: x=3, 4 or 5;2x.gtoreq.z.gtoreq.y;and y+z=2x+2; andfurther including an etching composition which includes said etchant compound and a second material different from the etchant compound that enhances or modifies plasma etching.

Abstract: The invention relates to novel fluorinated organic compounds having the following molecular structure: ##STR1## where R.sub.F is a fluorinated carbon chain, R.sub.1H is hydrogen or a saturated hydrogenated carbon chain, R.sub.2H is hydrogen or a saturated hydrogenated carbon chain, R.sub.1H and R.sub.2H being not simultaneously hydrogen, the group ##STR2## comprising a principal chain and at least one linear or cyclic branch. These compounds may be prepared by reacting a phosphine with a halide under heating, and then hot reacting in a solvent the resulting phosphonium salt with a branched aldehyde or a ketone. These compounds have an excellent stability, a good biocompatibility and a high capacity to solubilize gases and particularly oxygen, such properties allowing their use in applications of the ophthalmological type or as an organ preservation medium.

Abstract: Methods of use of compounds and compounds for the treatment of disorders characterized by the cerebral deposition of amyloid are provided. Among the compounds are those of formulae (I), (II) and (III): ##STR1## in which R.sub.1 is preferably 2-methyl propene, 2-butene, norleucine; R.sub.2, R.sub.4, and R.sub.8 are each independently methyl or ethyl; R.sub.3 is preferably iso-butyl or phenyl; R.sub.5 is preferably iso-butyl; R.sub.6 is H or methyl; R.sub.7 --(Q).sub.n is preferably benzyloxycarbonyl or acetyl; Q is preferably --C(O)--; R.sub.B is preferbly iso-butyl; R.sub.A =--(T).sub.m --(D).sub.m --R.sub.1, is which T is preferably oxygen or carbon, and D is preferably a mono-unsaturated C.sub.3-4 alkenyl being more preferred; and X is an alcohol, particularly a secondary alcohol.

Abstract: Stoichiometric and catalytic chemical transformations may be carried out in solution using novel fluorous multiphase systems (FMS). The term "fluorous" is defined as a carbon-fluorine bond rich organic molecule which is generated by replacing hydrogen atoms bonded to carbon atoms with fluorine. The novel complexes suitable for use as fluorous catalysts and reagents in the present invention contain sufficient number of fluorous moieties to render them preferentially soluble in the appropriate fluorous solvent without impairing the ability of the catalyst or reagent to be effective or participate in the corresponding reaction.

Abstract: A production method of perfluorocarbon comprising a main reaction step of making a hydrofluorocarbon and fluorine gas of raw materials react in vapor phase with each other to obtain a reaction product gas containing a perfluorocarbon and residual fluorine gas, and a fluorine gas removing step of making the reaction product gas effluent from the main reaction step contact a hydrofluorocarbon having a chemical equivalent not less than 1.1 mol times a chemical equivalent of the fluorine gas contained in the reaction product gas, thereby removing the fluorine gas.

Abstract: Enzymatically cleavable chemiluminescent 1,2-dioxetane compounds capable of producing light energy when decomposed, substantially stable at room temperature before a bond by which an enzymatically cleavable labile substituent thereof is intentionally cleaved, are disclosed. These compounds can be represented by the formula: ##STR1## wherein: X and X.sup.1 each represent, individually, hydrogen, a hydroxyl group, a halo substituent, an unsubstituted lower alkyl group, a hydroxy (lower) alkyl group, a halo (lower) alkyl group, a phenyl group, a halophenyl group, an alkoxyphenyl group, a hydroxyalkoxy group, a cyano group or an amide group, with at least one of X and X.sup.1 being other than hydrogen; andR.sub.1 and R.sub.2, individually or together, represent an organic substituent that does not interfere with the production of light when the dioxetane compound is enzymatically cleaved and that satisfies the valence of the dioxetane compound's 4-carbon atom, with the provisos that if R.sup.1 and R.sub.

Abstract: To provide an azeotropic composition comprising cis-1,1,2,2,3,4-hexafluorocyclobutane and at least one compound selected from the group consisting of methanol, ethanol, isopropanol, n-propanol, tert-butanol, cyclopentane, n-octane, isooctane, n-heptane and methylcyclohexane, and a detergent, drying agent and foaming agent, which use the above-mentioned azeotropic composition. The azeotropic composition of the present invention is an alternative fleon composition having less influence on plastics, being excellent in solvency and having less influence on the ozone layer.

Abstract: The fluorine content of an acyclic saturated compound of the formula C.sub.n F.sub.a X.sub.b H.sub.c (wherein each X is independently selected from the group consisting of Cl and Br, and wherein n is 1 to 6, a is 1 to 13, b is 0 to 12, c is 1 to 9, and a+b+c equals 2n+2) is reduced by reacting the acyclic saturated compound with HCl in the vapor phase at an elevated temperature in the presence of a catalyst, the mole ratio of HCl to the acyclic saturated compound being at least about 1:1.

Abstract: A novel process for producing a biaryl compound represented by formula (III), which is useful as a medicine, an agricultural chemical and an electrooptical liquid-crystal display material:Ar--Ar' (III)(wherein Ar and Ar' each independently represents a substituted or unsubstituted aromatic group) which comprises the steps of (i) reacting a trialkoxysilyl-substituted aromatic compound represented by formula (I):Ar--Si(OR).sub.3 (I)(wherein Ar has the same meaning as defined above and R represents an alkyl group having from 1 to 5 carbon atoms) with a fluoride ion source in the presence of a solvent, and then (ii) adding thereto an aromatic compound represented by formula (II):X--Ar' (II)(wherein X represents an eliminating group and Ar' has the same meaning as defined above) and a catalyst comprising a transition metal of tenth group to conduct a further reaction.

Abstract: A process for producing tetrafluoromethane which comprises reacting a hydrofluorocarbon containing one carbon atom in the molecule with fluorine gas at an elevated temperature in a vapor phase in the presence of a diluent gas.

Abstract: A process for producing hexafluoroethane which comprises reacting a hydrofluorocarbon containing two carbon atoms in the molecule with fluorine gas at an elevated temperature in a vapor phase in the presence of a diluent gas.

Abstract: Free radical reaction of unsaturated material, dissolved in a polar, water immiscible organic solvent, & perfluoroalkyl iodide in the presence of buffer or means for adjusting pH of aqueous phase.

Abstract: A process is disclosed for producing CF.sub.3 CH.sub.2 F from CF.sub.3 CHClF by catalytic chlorination of CF.sub.3 CHClF to CF.sub.3 CCl.sub.2 F at elevated temperature, and reaction of CF.sub.3 CCl.sub.2 F with H.sub.2 in the presence of a carbon-supported precious metal catalyst at a temperature of from about 100.degree. C. to 250.degree. C. Suitable catalysts for the chlorination include carbon catalysts and catalysts wherein halides of certain metals (La, Zn, Cu, Cr, Ru, Rh, and/or Pt) are supported on carbon.

Abstract: This invention provides chiral nonracemic compounds of general formula I which are useful as components of FLC compositions in SSFLC and DHFLC devices: ##STR1## wherein Z is a C.dbd.O group or a CH.sub.2 group, R.sub.F is a partially or fully fluorinated alkyl or alkenyl group, R.sub.2 is selected from an alkyl, alkenyl or alkynyl group in which one or more CH.sub.2 groups can optionally be substituted with one or two halogen atoms or in which one or more non-neighboring CH.sub.2 can be replaced with an O, S or an alkyl silyl group, S.sub.1 (R.sub.A)(R.sub.B), in which R.sub.A and R.sub.B, independently of one another, are small alkyl or alkenyl groups having from one to six carbon atoms, * indicates the chiral carbon and where Ar can be a one, two, or three aromatic ring LC core moieties. In particular, the core can have one to three, aromatic rings which are optionally linked by linking groups including O, S, CH.sub.2 S, SCH.sub.2, CH.sub.2 CH.sub.2, CH.sub.2 O, OCH.sub.2, CH.sub.2 CO.sub.2, CH.sub.

Abstract: The invention relates to a process for the preparation of aromatic fluoro compounds of the formula IF.sub.n ArR.sup.1 R.sup.2 R.sup.3 (I)in which Ar is phenyl, naphthyl or pyridyl, R.sup.1, R.sup.2 and R.sup.3 independently of one another are hydrogen, halide, (C.sub.1 -C.sub.4)-alkyl, phenyl, NR.sub.2, OR, CN, COH or COR, where R is hydrogen or (C.sub.1 -C.sub.6)-alkyl, and n=1, 2, 3, 4 or 5,which comprises reacting aromatic fluoro compounds of the formula IIX.sub.m F.sub.n ArR.sup.1 R.sup.2 R.sup.3 (II)in which Ar, R.sup.1, R.sup.2, R.sup.3 and n have the abovementioned meaning, each X is a chlorine or bromine atom and m=1, 2, 3, 4 or 5, with hydrogen in the presence of a palladium catalyst, a water-insoluble amine which also does not form water-soluble hydrohalides, and if desired an inert solvent.

Abstract: A method for the preparation of .alpha.-substituted .omega.-dihydroperluoroalkane derivatives of the general formula H(CF.sub.2 CF.sub.2).sub.n R wherein R=H or COOH, and n=1-10 is characterized by oxidizing .alpha., .alpha., .omega.-trihydroperfluoroalcohols with an oxygen gas or an oxygen-containing gas in the presence of a homogeneous copper catalyst and an alkaline agent in an organic solvent with subsequent isolation of the desired product.