2927-83-5Relevant academic research and scientific papers
Methods for producing perfluoromethyl vinyl ether and intermediate thereof
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Paragraph 0035; 0036, (2017/05/11)
The invention discloses a method for producing perfluorinated-2-methoxy propionyl fluorine. In the presence of a polar aprotic solvent, under the action of a main catalyst alkali metal fluoride and a phase transfer catalyst, carbonyl fluoride and hexafluoropropylene oxide react to prepare perfluorinated-2-methoxy propionyl fluorine. The invention further provides a method for preparing perfluoromethyl vinyl ether from perfluorinated-2-methoxy propionyl fluorine. According to the methods, the reaction yield is high, the prepared products are high in purity, operation is easy, and environment friendliness is achieved.
METHOD FOR PREPARING FLUORINE-CONTAINING VINYL ETHER
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Paragraph 0030-0031, (2014/10/29)
Provided is a method for preparing fluorine-containing vinyl ether. The method comprises: carrying out hydrolytic neutralization on a small molecular weight byproduct which is produced in the process of preparing perfluoropolyether or a perfluorinated surfactant by photooxidation of fluorine-containing olefin; and obtaining fluorine-containing vinyl ether by drying and cracking. The byproduct produced in the process of preparing perfluoropolyether or the perfluorinated surfactant is utilized, thereby solving the emission problem of industrial wastes, reducing environment pollution, and generating available fluorine-containing vinyl ether.
PRODUCTION METHOD OF FLUOROETHERCARBOXYLIC ACID FLUORIDE AND FLUOROETHERCARBOXYLIC ACID
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Page/Page column 53; 55, (2010/04/27)
The present invention is a production method of a fluoroethercarboxylic acid fluoride, comprising the step of selectively producing a fluoroethercarboxylic acid fluoride represented by the formula (I): CF3O(CF(CF3)CF2O)CF(CF3)COF (I) by reacting hexafluoropropylene oxide with carbonyl fluoride in a solvent at a temperature of -30 to 40 °C in the presence of a catalyst, wherein the catalyst comprises at least one species selected from the group consisting of metal fluorides, tertiary amines, tertiary diamines and tetraalkylammonium salts, and the solvent is an aprotic polar solvent.
A new procedure for preparing perfluoroalkoxypropanoic acid fluorides
Igumnov,Lekontseva,Shipigusev,Mukhametshin
, p. 435 - 437 (2008/02/01)
Condensation of perfluoro carboxylic acid fluorides with hexafluoropropene epoxide in the presence of N,N, N,N-tetraalkyldiaminomethanes was studied.
A process for preparing acylfluorides
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Page column 5-6, (2008/06/13)
A process for preparing acylfluorides by reaction of carbonyl fluoride COF2 with compounds having general formula:T = CR1R2 wherein:T is O or CF2R1 and R2, equal or different, are F or a R(O)t radical, wherein R = linear or branched C1-C7 (per)fluoroalkyl, optionally containing one or more oxygen atoms, t is an integer equal to zero or 1; wherein a catalyst supported on porous compound is used, the catalyst being selected from: CsF, RbF, KF, AgF, each optionally in admixture with one or more of the others.
Process for preparing acylfluorides
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Page 3, (2010/02/05)
A process for preparing acylfluorides by reaction of carbonyl fluoride COF2 with compounds having general formula: T=CR1R2 ??(I) wherein: T is O or CF2 R1 and R2, equal or different, are F or a R(O)t radical, wherein R=linear or branched C1-C7 (per)fluoroalkyl, optionally containing one or more oxygen atoms, t is an integer equal to zero or 1; wherein a catalyst supported on porous compound is used, the catalyst being selected from: CsF, RbF, KF, AgF, each optionally in admixture with one or more of the others.
