382-22-9Relevant academic research and scientific papers
COMPOSITION INCLUDING FLUOROMETHANE AND METHOD FOR PRODUCING SAME
-
Paragraph 0068-0070, (2018/06/04)
An object of the present invention is to provide a composition containing fluoromethane having high purity. A method for producing fluoromethane, comprising: pyrolyzing in a gas phase a fluorine-containing methyl ether represented by Formula (1): wherein R1 and R2 are the same or different, and each represents an optionally substituted linear or branched monovalent aliphatic hydrocarbon group, an optionally substituted monovalent aromatic hydrocarbon group, an optionally substituted monovalent cyclic aliphatic hydrocarbon group, hydrogen, or halogen, in the presence of an alumina catalyst to thereby obtain a mixed gas containing fluoromethane and acid fluoride, wherein: the alumina catalyst contains chlorine in an amount of 1.0 wt % or less.
MANUFACTURING METHOD OF METHANE FLUORIDE
-
Paragraph 0055-0059, (2017/03/24)
PROBLEM TO BE SOLVED: To provide a method for elongating life of a catalyst in a conventionally known method for manufacturing methane fluoride by thermal decomposition of fluorine-containing methyl ether in a presence of a catalyst. SOLUTION: There is provided a method for manufacturing methane fluoride by gas phase thermal decomposition of fluorine-containing methyl ether represented by the formula (1) in a presence of a catalyst for thermal decomposition in a presence of at least one kind of gas selected from hydrogen fluoride, chloride, hydrogen chloride and air. (1), where R1 and R2 are each independently a substituted/unsubstituted linear/branched monovalent aliphatic hydrocarbon group, monovalent aromatic hydrocarbon group or monovalent cyclic aliphatic hydrocarbon group, H or a halogen atom. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
METHOD FOR PRODUCING DRY ETCHING GAS
-
Paragraph 0049; 0050; 0060, (2015/11/18)
Provided is a method for producing fluoromethane and 3,3,3-trifluoro-2-(trifluoromethyl)propanoyl fluoride ((CF3)2CHCOF), which are useful as dry etching gases etc., safely and inexpensively with high purity. According to the method in which 1,1,3,3,3-pentafluoro-2-trifluoromethylpropyl methyl ether is pyrolyzed in a gas phase in the presence of a catalyst, the desired fluoromethane and 3,3,3-trifluoro-2-(trifluoromethyl)propanoyl fluoride can be obtained with high selectivity and high conversion of the starting material by a simple process in which a pyrolysis reaction is performed in a gas phase using the inexpensive starting material.
Catalytic Conversion of Fluoroalkyl Alkyl Ethers to Carbonyl Compounds
England, David C.
, p. 4007 - 4008 (2007/10/02)
Fluoroalkyl alkyl ethers are generally available by attack of alkoxide ion on fluoro olefins.In the presence of Lewis acid catalysts, such methyl and ethyl ethers have now been found to lose methyl or ethyl fluoride, respectively, to give fluorinated carbonyl compounds.The carbonyl compounds include acid fluoride, ketone, keto ester, vinyl ketone, acyl ketene, ketene, and acryloyl fluoride.
Fluorinated Pyrones and Cyclobutenecarboxylates
England, David C.,Donald, Elaine A.,Weigert, Frank J.
, p. 144 - 147 (2007/10/02)
Fluorinated α-pyrones 6 have been prepared from perfluoroacryloyl fluorides 1 and 2 by reaction with arylacetylenes and/or methyl ketones.Cyclobutenecarboxylates 8 have also been obtained from the reactions of 1 with acetylenes.The NMR spectrum of pyrone 6e shows unusually long-range fluorine-fluorine coupling.
Fluoroketenes. 10. Synthesis and Chemistry of a Perfluoroacylketene and a Related Perfluorovinyl Ketone
England, David C.
, p. 147 - 153 (2007/10/02)
The synthesis and chemistry of a perfluoroacylketene (12) and a related perfluorovinyl ketone (5) are described.Both are prepared in good yields from a dimer of hexafluoropropene (2).They are thermally stable but very reactive.No acylketene has previously been isolated.Both compounds give the same hydrolysis product and the same product from dimethylformamide.The vinyl ketone, like previously reported perfluoroacryloyl fluorides, is subject to nucleophilic attack at the terminal unsaturated carbon and reacts as a diene in Diels-Alder additions to C=C, C C, C=N, C N, and C=O unsaturation.The acylketene also reacts as a diene togive adducts that are hydrolysis products of the vinyl ketone adducts.
