- Preparation method of fluorine-containing binary acyl fluoride
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The invention discloses a preparation method of fluorine-containing binary acyl fluoride. Fluorine-containing dicarboxylic acid as a raw material is subjected to fluorination with a fluorination reagent under the action of a solvent and a catalyst to obtain the fluorine-containing binary acyl fluoride. During actual production, the fluorine-containing dicarboxylic acid is directly fluorinated intocorresponding fluorine-containing diacyl fluoride under the action of the organic solvent and the Lewis acid catalyst, and the organic solvent and the specific catalyst are matched with other conditions, so that from the fluorine-containing dicarboxylic acid can be effectively promoted.
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Paragraph 0042
(2020/07/12)
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- Method for preparing fluorine-containing binary acyl fluoride from fluorine-containing cycloolefin
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The invention discloses a method for preparing fluorine-containing diacyl fluoride from fluorine-containing cycloolefin, which comprises the following steps: A) oxidizing fluorine-containing cycloolefin serving as a raw material by using an oxidant under the action of a solvent and a catalyst to generate corresponding fluorine-containing dicarboxylic acid; B) under the action of a solvent and a catalyst, subjecting the fluorine-containing dicarboxylic acid prepared in the step A and a fluorination reaction reagent to a fluorination reaction to obtain fluorine-containing diacyl fluoride. The method comprises the following steps: carrying out oxidation reaction on the fluorine-containing cycloolefin to generate corresponding fluorine-containing dicarboxylic acid; directly fluorinating the fluorine-containing dicarboxylic acid into the corresponding fluorine-containing binary acyl fluoride under the action of an organic solvent and a Lewis acid catalyst. The organic solvent and the specific catalyst are adopted, and other conditions are matched, so that the generation of the corresponding acyl fluoride with high efficiency and high yield from the fluorine-containing cycloolefin can beeffectively promoted.
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Paragraph 0066-0068
(2020/07/13)
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- PROCESS FOR PRODUCING FLUORINATED COMPOUND
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To provide a process for producing a desired perfluorinated product at a high yield in a fluorination reaction of a partially fluorinated ester. A perfluorinated compound (4) is obtained by fluorinating in a liquid phase a compound (3) (wherein the fluorine content is at least 30 mass %) obtained by reacting a compound (1) and a compound (2), wherein the compound (1) is HOCH2—RA—CH2OH, the compound (2) is X1C(═O)—C(RB)(RC)(RD), RA is a bivalent saturated hydrocarbon group or the like which has no hetero atom such as an etheric oxygen atom, X1 is a halogen atom, and —C(RB)(RC)(RD) is a branched group.
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Paragraph 0249
(2016/06/28)
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- Method for producing fluorinated compound
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Provided is a method for producing a desired perfluorinated product with high yield by a fluorination reaction of a partially fluorinated ester. A compound (3), which is produced by reacting a compound (1) with a compound (2) (and which has a fluorine content of 30 mass% or more), is fluorinated in a liquid phase to produce a perfluorinated compound (4), wherein the compound (1) is represented by the formula HOCH2-RA-CH2OH and the compound (2) is represented by the formula X1C(=O)-C(RB)(RC)(RD). RA represents a bivalent saturated hydrocarbon group or the like and does not have a hetero atom such as an ethereal oxygen atom. X1 represents a halogen atom, and -C(RB)(RC)(RD) represents a branched group.
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Paragraph 0428; 0429; 0430
(2016/12/22)
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- PROCESSES FOR PRODUCTION OF FLUORINE-CONTAINING COMPOUNDS
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This process for producing fluorine-containing compounds includes liquid-phase fluorination by introducing a raw material compound and fluorine gas into a solvent to replace hydrogen atoms in the raw material compound with fluorine atoms. More specifically, the process for producing fluorine-containing compounds includes (1) promoting fluorination by dissolving the raw material compound in anhydrous hydrofluoric acid and introducing into a liquid-phase fluorination solvent, or (2) promoting fluorination by dissolving the raw material compound in a perfluoro compound having a plurality of polar groups in a molecule thereof and introducing into a liquid-phase fluorination solvent. According to these processes, a fluorination reaction can be carried out at high yield and without containing hardly any isomers while using a hydrocarbon compound as is for the raw material.
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Page/Page column 12
(2010/09/05)
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- Use of Perfluoroalkylfluorosulfonates for Synthesizing Organofluorine Compounds
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The possibility of using fluorosulfation for synthesizing perfluorovinyl and perfluorodivinyl ethers, and also perfluorocarboxylic and perfluorodicarboxylic acids, has been studied.
- Rapkin, A. I.,Zabolot-skikh, V. F.,Kochanov, A. S.,Tiunov, A. V.,Zhirnov, O. M.
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p. 133 - 134
(2007/10/03)
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- SYNTHESIS OF OXYGEN-CONTAINING ORGANOFLUORINE COMPOUNDS AND THEIR REACTIONS XI. LIQUID-PHASE OXIDATION OF PERFLUORO-1,5-HEXADIENE BY ATMOSPHERIC OXYGEN
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The oxidation of perfluoro-1,5-hexadiene by atmospheric oxygen under UV irradiation gave perfluoro-1,5-hexadiene dioxide, 4,5-epoxyperfluorovaleryl fluoride, and perfluorosuccinyl fluoride.The intermediate oxidation product was 1,2-epoxyperfluoro-5-hexene.The obtained α-oxides undergo both nucleophilic and electrophilic opening of the epoxide ring, giving mono- and bifunctional derivatives.
- Filyakova, T. I.,Ilatovskii, R. E.,Zapevalov, A. Ya.
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p. 1818 - 1822
(2007/10/02)
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