- Homogeneous catalytic hydrogenation of perfluoro methyl esters
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The first example of perfluoroalkyl methyl ester RfC(O)OMe (Rf = C3F7, C5F11) reduction by homogeneous catalytic hydrogenation with the ruthenium catalyst Ru-MACHO is herein reported. The hydrogenation process leads to the corresponding perfluorinated alcohols thus replacing sodium borohydride that has so far represented the state of art in perfluoro ester reduction.
- Lazzari, Dario,Cassani, Maria Cristina,Bertola, Maurizio,Moreno, Francisco Casado,Torrente, Damiano
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p. 15582 - 15584
(2013/09/12)
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- FLUORINE-CONTAINING ETHER COMPOUND
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A novel fluorinated ether compound useful as an inert medium is provided. The compound is represented by the following formula (1) such as the compound represented by the following formula (1a) or the compound represented by the following formula (1b): ????????RF1OCFRF2CFRF2ORF1?????(1) ????????F (CF2)4OCF(CF3)CF(CF3)O(CF2)4F?????(1a) ????????F(CF2)6OCF(CF3)CF(CF3)O(CF2)6F?????(1b) wherein the symbols have the following meanings: RF1 is a C4-7 linear perfluoroalkyl group; andRF2 is a fluorine atom or a trifluoromethyl group.
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Page/Page column 11-12
(2008/06/13)
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- Ozonides of perfluorooct-1-ene and perfluorooct-2-ene
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Ozonides of higher perfluoroalkenes were prepared for the first time by ozonation of perfluorooct-1-and -2-enes in Freon-113. The structures of the resulting compounds were confirmed by 13C NMR spectroscopy and GLC-mass spectrometry.
- Odinokov,Akhmetova,Savchenko,Bazunova,Paramonov,Khalilov
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p. 1103 - 1105
(2007/10/03)
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- Some Novel Reactions of Perfluoro-2,3-dialkyloxaziridines
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Perfluoro-2,3-dialkyloxaziridines rearrange at 120-160 deg C into RfN=CF-OR'f quantitatively.Reaction with SbF5 at elevated temperature leads to the formation of the isomeric alkoxy imines RfON=CFR'f.Reaction with CsF in the absence of a solvent results in formation of a mixture of the corresponding acyl fluoride R'fC(O)F and N-fluoro imine R'fCF=NF.In contrast, reaction between perfluoro-2-butyl-3-propyloxaziridine and CsF in MeCN produces C4F9ON=CFC3F7.Interaction of this oxaziridine with polyfluoro ketones and COF2 in the presence of CsF in polar solvents leads to the formation of alkoxy imines R''fON=CFC3F7.
- Petrov, Viacheslav A.,DesMarteau, Darryl D.
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p. 505 - 510
(2007/10/02)
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- Synthesis of Functional Perfluorinated Resins, Branched Perfluorinated Ethers and Perfluoroalkanoyl Fluorides
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Functional-group-containing perfluorinated resins have been prepared by carefully controlled direct fluorination of poly-(3-methyloxetane-3-methanol).Branched perfluorinated ethers such as bis(perfluoroneopentyl) ether and perfluoro-(2,2-dimethylbutyl methyl ether) have also been synthesized by direct fluorination of alkanols.The by-products, perfluoroalkanoyl fluorides, are useful intermediates.
- Huang, Hsu-Nan,Lagow, Richard J.
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p. 871 - 875
(2007/10/02)
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- Synthesis of Unusual Perfluorocarbon Ethers and Amines Containing Bulky Fluorocarbon Groups: New Biomedical Materials
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The reactions of elemental fluorine with structually crowded hydrocarbon ethers and amines have been studied.The perfluorinated products are currently of interest in biomedical or electronic industrial applications.The syntheses by direct fluorination of perfluoro(tert-butyl methyl ether), perfluoro(tert-butyl isobutyl ether), perfluoro(1,2-di-tert-butoxyethane), perfluoro(cyclohexyl neopentyl ether), perfluoro(2,2,5,5-tetramethyltetrahydrofuran), perfluoro(2,5-dimethyltetrahydrofuran), bis(perfluoroisopropyl) ether, perfluoro(2-ethyltetrahydrofuran), and perfluoro(1,2,2,6,6-pentamethylpiperidine) are reported.The skeletally rearranged byproducts perfluoro(isobutyl methyl ether), perfluoro(2,2,5-trimethyltetrahydrofuran), perfluoro(2,2,5-trimethyltetrahydropyran), 3-hydropentadecafluoro-2,2,5,5-tetramethyltetrahydrofuran, perfluoro(isopropyl propylether), and perfluoro(ethyl isopropyl ether) were also characterized.The 19F and 13C (19F decoupled) NMR assignments of these perfluorinated chemicals are discussed.
- Huang, Hsu-Nan,Persico, Daniel F.,Lagow, Richard J.,Clark, Leland C.
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