382-93-4Relevant academic research and scientific papers
Synthesis method of 2,3,3,3-tetrafluoropropionate
-
Paragraph 0099; 0100, (2017/02/17)
The invention belongs to the technical field of organic chemistry and provides a synthesis method of 2,3,3,3-tetrafluoropropionate. According to the synthesis method, a N,N-disubstituted-2,3,3,3-tetrafluoropropionamide pure product or a mixture containing 0.1 percent to 99.99 percent of the N,N-disubstituted-2,3,3,3-tetrafluoropropionamide is used as a starting raw material, and is hydrolyzed and treated by an esterification one-pot method in the presence of acid or alkali and corresponding alcohol to obtain the 2,3,3,3-tetrafluoropropionate. The 2,3,3,3-tetrafluoropropionate (II) is synthesized through adopting the simple and easy-to-operate one-pot method; an applicable range is wide and conditions are moderate; the synthesis method is suitable for industrial production.
Fluorine gas for life science syntheses: Green metrics to assess selective direct fluorination for the synthesis of 2-fluoromalonate esters
Harsanyi, Antal,Sandford, Graham
supporting information, p. 3000 - 3009 (2015/05/27)
Optimisation and real time reaction monitoring of the synthesis of 2-fluoromalonate esters by direct fluorination using fluorine gas is reported. An assessment of green metrics including atom economy and process mass intensity factors, demonstrates that the one-step selective direct fluorination process compares very favourably with established multistep processes for the synthesis of fluoromalonates.
METHOD FOR PRODUCING FLUORINE-CONTAINING CARBOXYLIC ACID ESTER
-
Page/Page column 8, (2010/04/24)
[Task] It is to provide a production method that the target fluorine-containing carboxylic acid ester can be obtained from a fluorine-containing ether by a one-step reaction, that a complicated step and a troublesome operation are not necessary, and that an excessive energy is not consumed. [Solving Means] A fluorine-containing carboxylic acid ester represented by the general formula R1HCFCOOR2 is produced by reacting a fluorine-containing ether represented by the general formula R1HCFCF2OR2 (R1 represents either of a fluorine atom and a C1-4 perfluoroalkyl group, and R2 represents a monovalent organic group) with water in the presence of a solid catalyst.
Synthesis and use of partially fluorinated dialkyl ethers derived from hexafluoropropylene
Il'in,Bakhmutov,Ivanova,Furin,Tolstikova,Sukhinin
, p. 98 - 101 (2007/10/03)
A procedure was developed for preparing partially fluorinated dialkyl ethers by the reaction of hexafluoropropylene with aliphatic and polyfluorinated alcohols in the presence of KOH. On treatment with concentrated sulfuric acid, these ethers form alkyl esters of acids, and on treatment with KOH, alkenyl ethers.
SELECTIVE PHOTOCHEMICAL REDUCTION OF CARBON-CHLORINE BOND IN FLUOROPROPANOATES AND ITS QUANTUM YIELDS
Paleta, Oldrich,Jezek, Rudolf,Dedek, Vaclav
, p. 766 - 771 (2007/10/02)
Ultraviolet light initiated reduction of methyl 2,2,3-trichlorodifluoropropanoate (I), methyl 2,3-dichlorotrifluoropropanoate (II) and methyl 2-chlorotetrafluoropropanoate (III) in 2-propanol afforded methyl 2,3-dichloro-3,3-difluoropropanoate (IV), methyl 3-chloro-2,3,3-trifluoropropanoate (V) and methyl 2,3,3,3-tetrafluoropropanoate (VI) in the respective yields 81percent, 86percent and 75percent.Maximum quantum yields, Φmax, of the reduction at 254 nm for the ester IV, V and VI are 225, 240 and 270, respectively, indicating thus a chain reduction mechanism.
FACILE SYNTHESIS OF DIALKYL FLUOROMALONATES AND THEIR DERIVATIVES
Ishikawa, Nobuo,Takaoka, Akio
, p. 107 - 110 (2007/10/02)
Dimethyl and diethyl fluoromalonates were prepared by the stepwise basic alcoholysis of hexafluoropropene in a total yield of 50 - 55 percent.These dialkyl fluoromalonates were alkylated with alkyl halides, and the resulting dialkyl α-fluoroalkylmalonates were cyclized with urea affording 5-fluorobarbituric acid derivatives.
IONIC DIMERISATION OF METHYL TRIFLUOROPROPENOATE
Paleta, Oldrich,Havlu, Vaclav,Dedek, Vaclav
, p. 415 - 422 (2007/10/02)
Dimerisation of methyl trifluoropropenoate (I) in solvents in the presence of potassium fluoride affords stereoisomeric dimethyl perfluoro-(4-methyl-2-pentene)dioates (III), the ratio of which depends on the reaction conditions.The reaction is accompanied by formation of methyl 2,3,3,3-tetrafluoropropenoate (IV), arising by proton transfer from the solvent to the carbanionic intermediate.Under suitable conditions complete conversion of the propenoate can be achieved and he dimer is obtained in 80-90percent yield.Principal steps of the dimerisation were proved and the formation of configuration isomers is discussed in terms of kinetically controlled reaction.
