3-dioxolan-2-one was also further fluorinated with elemental fluorine to give three isomers of difluoro derivatives by the same methodology. Another topic is the preparation of trifluoromethanesulfonyl fluoride, an intermediate of lithium battery electrolyte, by the reaction of methanesulfonyl fluoride with elemental fluorine. The use of perfluoro-2-methylpentane as a solvent gave satisfactory selectivity
Manufacturing method and apparatus of 4-fluoroethylene carbonate control system of autonomous intelligent distributed control modules
申请人:Woo Won Byung
公开号:US20060167279A1
公开(公告)日:2006-07-27
Disclosed herein is a method of producing 4-fluoroethylene carbonate, in which ethylene carbonate reacts with a mixture of fluorine and nitrogen gases. The method comprises feeding a mixture gas of fluorine gas and nitrogen gas into a reactor having ethylene carbonate charged therein, so as to react the ethylene carbonate with the mixture gas of the fluorine gas and the nitrogen gas. The mixture gas fed in the reactor is regulated to have a desired bubble size while passing through a gas bubble regulating column, in which a packing for a packed column is packed. In the method, EC directly reacts with F
2
/N
2
mixture gas to produce FEC, thus a purification process is simple and it is possible to produce FEC at high conversion efficiency and selectivity.
Highly selective anodic monofluorination of 4-arylthio-1,3-dioxolan-2-ones: a marked solvent effect on product selectivity
作者:Hideki Ishii、Norihisa Yamada、Toshio Fuchigami
DOI:10.1039/b004652n
日期:——
first example of a solventeffect on fluorinated product selectivity; anodic fluorination of 4-arylthio-1,3-dioxolan-2-ones in CH2Cl2 containing a fluoride supporting electrolyte using an undivided cell provided the fluorodesulfurization product, 4-fluoro-1,3-dioxolan-2-one preferentially while anodic fluorination in DME resulted in α-fluorination, without desulfurization, selectively.
[EN] PROCESS FOR THE MANUFACTURE OF TRIFLUOROETHYLENE CARBONATE AND TETRAFLUOROETHYLENE CARBONATE<br/>[FR] PRÉPARATION DE CARBONATE DE DIFLUOROÉTHYLÈNE, DE CARBONATE DE TRIFLUOROÉTHYLÈNE ET DE CARBONATE DE TÉTRAFLUOROÉTHYLÈNE