- HFPO trimer-based alkyl triflate, a novel building block for fluorous chemistry. Preparation, reactions and 19F gCOSY analysis
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Triflate 4, CF3(CF2)2O-CF(CF 3)CF2O-CF(CF3)CH2-OTf (R FOCH2OTf), of the HFPO trimer-based alcohol 3 (R FOCH2OH) is a novel highly fluorinated building block for fluorous chemistry. In analogy to similar polyfluorinated triflates with methylene spacer, its reactivity is limited to strong and soft nucleophiles. Whereas reactions with cyanide anion, phenolate anion, enolate of diethyl malonate or lithium salt of benzaldehyde bis(phenylsulfanyl)acetal were unsuccessful, the corresponding imidazole 5, iodide 6 or azide 7 were prepared in good yields. Reaction of imidazole 5 with (perfluorohexyl)methyl triflate (9) afforded highly fluorinated non-crystalline imidazolium salt 8, TfO -RFOCH2-(C3H3N 2)+-CH2C6F13-n, which could be employed as fluorous ionic liquid or intermediate for fluorous carbenes. Complete assignment of complex 19F NMR spectra of all compounds employed was accomplished using 19F gCOSY NMR method.
- Kysilka, Ondrej,Rybackova, Marketa,Skalicky, Martin,Kvicalova, Magdalena,Cvacka, Josef,Kvicala, Jaroslav
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Read Online
- Fluoroether acrylate monomer with 1,2,3-triazole group as linkage, and preparation method and application of fluoroether acrylate monomer
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The invention belongs to the technical field of fine chemicals, and particularly relates to a fluoroether acrylate monomer with a 1,2,3-triazole group as a linkage, and a preparation method and an application of the fluoroether acrylate monomer. The monomer has a structural formula shown in the specification, wherein Rf is a hexafluoropropylene oxide oligomer structure: CF3CF2CF2O(CFCF3CF2O)nOCFCF3, n is 0-40, R1 and R1' are H or acrylate structures, and R1 and R1' are not H at the same time; the acrylate structure has a structural formula shown in the specification, wherein R3 is one of H,methyl, fluorine or chlorine, R4 is one of H, methyl, fluorine or chlorine, and m is 1-10. According to the invention, a triazole hydroxyl structure is directly esterified with acrylic acid, the obtained ester group has strong stability, and the preparation method is scientific, reasonable, simple and feasible; the fluoroether acrylate monomer is used for fluorine-containing polyacrylate, UV light-cured polyacrylate or a light-cured bridging cross-linking agent.
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Paragraph 0037-0039
(2020/03/06)
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- A method for preparing the fluorine carbon is mellow and its application (by machine translation)
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The invention discloses a method for preparing the fluorine carbon is mellow and its application, the preparation method is with hexafluoropropylene oxide as the raw material, in a suitable reaction temperature, and under the action of the solvent in the catalyst, the polymerization of the generated or nexaituoropropene dimer and trimer, with no need for separate directly converted into a methyl ester, obtained by rectification of dimer, trimer methyl ester, the fluorine carbon is mellow respectively reduction of dimer, trimer the fluorine carbon is mellow, finally again rectification, the purity is as high as 99.7%. (by machine translation)
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Paragraph 0043; 0045; 0048
(2017/02/24)
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- PROCESS FOR PRODUCTION OF FLUORINATED SULFONYL FLUORIDES
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The present invention provides a process for producing a fluorinated sulfonyl fluoride useful as e.g. a material for an ion exchange resin, and a novel chemical substance useful as an intermediate in the production process. That is, to provide a process comprising oxidizing Y-S-RA-E-RB by means of an oxidizing agent essentially containing a halogen atom to obtain XSO2-RA-E-RB, and in a case that X is a fluorine atom, reacting the compound with fluorine in a liquid phase as it is, and in a case that X is a halogen atom other than a fluorine atom, converting X into a fluorine atom, and then reacting the obtained compound with fluorine in a liquid phase to obtain FSO2-RAF-EF-RBF, and then decomposing it to obtain FSO2-RAF-COF (wherein RA is a bivalent organic group such as an alkylene group, RB is a monovalent organic group such as a perfluoroalkyl group, E is -CH2OCO-, Y is a monovalent organic group such as a cyano group or the like, X is a halogen atom, RAF is a bivalent organic group having RA fluorinated or the like, RBF is the same group as RB or the like, and EF is -CF2OCO-).
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Page/Page column 20
(2008/06/13)
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- 2,4,4,5,7,7,8,8,9,9,9-Undecafluoro-2,5-bis(trifluoromethyl)-3, 6-dioxanonyl methacrylate
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The title monomer (4) was prepared from the trimer of hexafluoropropene-1,2-oxide, 2,4,4,5,7,7,8,8,9,9,9-undecafluoro-2,5-bis(trifluoromethyl)- 3,6-dioxanonanoyl fluoride (1), via methyl ester 2 that was reduced by sodium borohydride to the corresponding alkanol 3, which was finally acylated by methacryloyl chloride.
- Paleta, Old?ich,Pale?ek, Ji?í,Michálek, Ji?í
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