- FLUOROLACTONE AND METHOD FOR PRODUCING SAME
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The present disclosure provides, for example, a method that can produce a fluorolactone compound from hexafluoropropylene oxide or the like in a single step. The present disclosure relates to a method for producing a compound represented by formula (1): wherein two R1 are the same and each is a fluorine atom or a fluoroalkyl group, the method comprising step A of reacting a compound represented by formula (2): wherein R1 is as defined above, with a compound (3) represented by formula (3-1) or the like: wherein R31, R32, and R33 are the same or different and each is a hydrogen atom or a C1-10 alkyl group, or two of them are optionally linked to each other to form a ring optionally having one or more substituents, in the presence of a fluorine compound (4) represented by formula (4-1) or the like: [in-line-formulae]MHnFm(4-1)[/in-line-formulae] wherein M is a metal atom, n is 0 or 1, and the sum of the valence number of M and n is m, and an organic solvent, provided that the compound represented by formula (3) is excluded from the organic solvent.
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Paragraph 0290
(2021/12/03)
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- Hexafluoropropylene oxide is added to the aldehyde, and method for producing an α [...] acid (by machine translation)
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[A] producing an α for [...] acid, industrially feasible method. [Solution] the step of reacting an aldehyde with hexafluoropropylene oxide, an α [...] acid production. [Drawing] no (by machine translation)
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Paragraph 0027-0050; 0052
(2020/04/09)
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- METHOD FOR PRODUCING TRIFLUOROPYRUVIC ACID FLUORIDE DIMER
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PROBLEM TO BE SOLVED: To provide a method for producing a trifluoropyruvic acid fluoride dimer that can be performed with a versatile machine and has more industrial practicality. SOLUTION: A method for producing a trifluoropyruvic acid fluoride dimer by feeding, in a closed container, ketone and/or aldehyde with hexafluoro propylene oxide continuously or intermittently for a reaction to occur therebetween at 0°C-200°C. SELECTED DRAWING: None COPYRIGHT: (C)2021,JPO&INPIT
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Paragraph 0027-0033
(2020/12/09)
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- Reaction of fluorosulfonyloxypentafluoroacetone in the presence of alkali metal fluorides
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2-Fluorosulfonyloxytetrafluoropropionyl fluoride (3) is the product of isomerization of fluorosulfonyloxypentafluoroacetone (1). In the presence of CsF at low temperatures compound 3 forms 2-fluorosulfonyloxyperfluoropropoxy anion, and at -25 °C CsF catalyzes the decomposition of compounds 1 and 3 with the formation of trifluoropyruvoyl fluoride isolated as cyclodimer. ; 2009 Springer Science+Business Media, Inc.
- Sterlin,Avetisyan
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experimental part
p. 1318 - 1320
(2010/10/04)
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