CAS: 684-16-2; Hexafluoroacetone

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全氟异丁烯置于potassium Permanganate体系中,化学反应生成 六氟丙酮
参考文献:有机氟化合物:I. 六氟丙酮的改进合成
标题:有机氟化合物:I. 六氟丙酮的改进合成
摘要:最近由 Brice,Lazerte,Hals 和 Pearlson 报道的六氟丙酮的合成在几个细节上得到了改进.聚四氟乙烯解聚成四氟乙烯,然后将其二聚,一步得到50%产率的全氟异丁烯.后者在 35-40 oc 下氧化.用高锰酸钾水溶液得到 75% 的六氟丙酮水合物.六氟丙酮的蒸气压在-60 oc 和-28 oc 之间测量.
DOI:10.1139/v55-055

专利信息

专利号:US-2025197202-A1
优先权日:2023-12-15
标题 :Synthesis of new polymers for the manufacture of solid hydrogen transfer agents
发明人：GÓMEZ EMILIO LEAL; MANCERA LEÓN PABLO TORRES; JUÃ?REZ JORGE ANCHEYTA; MARTÃ?NEZ FERNANDO ALONSO; VÃ?ZQUEZ LAURA OLIVIA ALEMÃ?N
权利人:MEXICANO INST PETROL
摘要:This disclosure refers to a method for the synthesis of polymers with weight average molecular weights greater than 50,000 g/mol, chemically inert, with a minimum decomposition temperature of 425° C., and a main chain composed only of carbon-carbon bonds, which contain structures of the type of naphthalene, phenanthrene, anthracene, pyrene, carbazole or any other where two or more aromatic rings of six carbon atoms of the benzene-type are fused, which may or may not contain aromatic heterocycles. In addition, the polymers obtained from the present disclosure may or may not contain fluorine atoms in their structure. The synthesis described here is carried out by means of polycondensation between a polycyclic aromatic compound and a compound with a carbonyl group in its structure in a strong acid medium.

专利号:US-4705904-A
优先权日:1984-02-14
标 题:Vapor phase synthesis of hexafluoroisobutylene
发明人：BONFIELD JOHN H; ULMER HARRY E
权利人:ALLIED CORP
摘要:A vapor phase synthesis of hexafluoroisobutylene, which comprises contacting in the vapor phase in a catalyst zone, B, of a reactor hexafluoropropylene oxide with a fluorinated catalyst such as fluorinated silica-alumina at a temperature of about 400°-600° C. for a residence time sufficient to form a vapor stream comprising hexafluoroacetone which is thereafter directly contacted in a heating zone of the reactor with a vapor stream comprising a keytone-generating compound such as acetic anhydride at a temperature of about 500°-700° C. for a residence time sufficient to form a stream comprising hexafluoroisobutylene, substantially-free of perfluoroisobutylene and recovering the hexafluoroisobutylene product is disclosed. A direct one reactor vapor phase synthesis of hexafluoroisobutylene which comprises (a) contacting, in the vapor phase, hexafluoropropene with less than a stoichiometric amount of oxygen required to convert substantially all the hexafluoroisopropene into hexafluoropropylene oxide in the presence of a fluorinated catalyst such as fluorinated silica-alumina at a temperature of about 400°-600° C. for a time sufficient to form a vapor stream comprising hexafluoropropylene oxide substantially-free of oxygen; (b) directly contacting said vapor stream, in a catalyst zone, B, containing a fluorinated catalyst which is preferably the same as used in catalyst zone, A, at a temperature of about 400°-650°, preferably about 500°-650° C. for a time sufficient to form a vapor stream comprising hexafluoroacetone; (c) directly contacting the vapor stream comprising hexafluroacetone with a vaporized compound such as acetic anhydride at a temperature of about 500°-700° C., preferably about 600° C. for a time sufficient to form a vapor stream comprising hexafluoroisobutylene, substantially-free of perfluoroisobutylene; and (d) recovering hexafluoroisobutylene is also disclosed.

专利号:US-7193103-B2
优先权日:2000-05-19
标题:Synthesis of N-[N-(3,3-dimethylbutyl)-L-α-aspartyl]-L-phenylalanine 1-methyl ester using oxazolidinone derivatives
发明人：PRAKASH INDRA
权利人:NUTRASWEET CO
摘要:Synthesis of N-[N-(3,3-dimethylbutyl)-L-α-aspartyl]-L-phenylalanine 1-methyl ester by treating N-(3,3-dimethylbutyl)-L-aspartic acid with ketones to give oxazolidinone derivatives, which are condensed with L-phenylalanine methyl ester.

专利号:US-2011130567-A1
优先权日:2009-06-03
标题 :Steroselective synthesis of certain trifluoromethyl-substituted alcohols
发明人：FANDRICK DANIEL R; REEVES JONATHAN T; SONG JINHUA J; TAN ZHULIN; QU BO; YEE NATHAN K; RODRIGUEZ SONIA
权利人:BOEHRINGER INGELHEIM INT
摘要:A process for stereoselective synthesis of a compound of Formula (X) n n n n n n n n n n wherein:n R 1 is an aryl group substituted with one to three substituent groups,n wherein each substituent group of R 1 is independently C 1 -C 5 alkyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, halogen, carboxy, cyano, or trifluoromethyl,n wherein each substituent group of R 1 is optionally independently substituted with one to three substituents selected from C 1 -C 3 alkyl, C 1 -C 3 alkoxy, phenyl, and alkoxyphenyl; n n R 2 and R 3 are each independently C 1 -C 5 alkyl; R 4 is C 1 -C 5 alkyl optionally independently substituted with one to three substituent groups,n wherein each substituent group of R 4 is independently C 1 -C 3 alkyl, hydroxy, halogen, amino, or oxo; and n R 5 is a heteroaryl group substituted with one to three substituent groups,n wherein each substituent group of R 5 is independently C 1 -C 5 alkyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkylsulfonylamino, aminosulfonyl, C 1 -C 5 alkylaminosulfonyl, C 1 -C 5 dialkylaminosulfonyl, halogen, hydroxy, carboxy, cyano, trifluoromethyl, trifluoromethoxy, trifluoromethylthio, or C 1 -C 5 alkylthio wherein the sulfur atom is optionally oxidized to a sulfoxide or sulfone.

专利号:US-7423171-B2
优先权日:2006-06-20
标题 :One-step catalytic process for the synthesis of isocyanates
发明人：SERRANO FERNANDEZ FRANCISCO LU; ALMENA MUNOZ BEATRIZ; PADILLA POLO ANA; OREJON ALVAREZ ARANCHA; CLAVER CABRERO CARMEN; CASTILLON MIRANDA SERGIO; SALAGRE CARNERO PILAR; AGHMIZ ALI
权利人:REPSOL YPF SA
摘要:A one-pot process for the synthesis of isocyanates, polyisocyanates or mixtures thereof which includes the steps of:n i. preparing a mixture comprising an amine, an alcohol, an oxygen-containing gas, carbon monoxide, a metal complex catalyst selected from the group consisting of macrocyclic complex catalysts and cobalt Shiff base catalysts; and a solvent selected from the group consisting of aliphatic or aromatic halocarbons, perhalogenated alcohols, halogenated ethers, halogenated ketones, perfluorinated hydrocarbons, polymers of chlorotrifluoroethylene having the formula —(CF 2 —CFCl) n wherein n is between 2 and 10, and mixtures thereof; ii. subjecting the resulting mixture to a first heating under pressure; iii. cooling and depressurizing the mixture resulting from the previous step; and iv. subjecting the mixture of the previous step to a second heating to separate out the isocyanate product from the mixture.

专利号:US-5698741-A
优先权日:1995-05-25
标题 :Asymmetric synthesis of (-)6-chloro-4-cyclopropyl-ethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one
发明人：THOMPSON ANDREW S; CORLEY EDWARD G; GRABOWSKI EDWARD J J; YASUDA NOBUYOSHI
权利人:MERCK & CO INC
摘要:An improved synthesis of a highly potent HIV reverse transcription inhibitor is disclosed, involving an acetylide and a trifluoromethyl ketone which produces a chiral product in the presence of a chiral amino alcohol.