METHOD FOR PREPARING THIOCARBOXYLIC ACID S-(FLUOROALKYL) ESTER
申请人:Sumitomo Chemical Company Limited
公开号:EP2684870A1
公开(公告)日:2014-01-15
It is provided that a method for producing a thiocarboxylic acid S-(fluoroalkyl) ester represented by formula (III) [wherein R1 represents a methyl group, an ethyl group or a phenyl group, and R2 represents a C1-C5 fluoroalkyl group] by reacting a thiocarboxylic acid represented by formula (I) [wherein R1 has the same meaning as defined above] with a fluoroolefin represented by formula (II) [wherein R2 has the same meaning as defined above] in the presence of a radical generator.
PROCESS FOR PRODUCING (FLUOROALKYLTHIO) ACETIC ACID ESTER
申请人:Hirota Masaji
公开号:US20120101294A1
公开(公告)日:2012-04-26
Disclosed is a process for producing a (fluoroalkylthio)acetic acid ester represented by the formula (3) wherein R, R
1
and R
2
have the same meanings as defined below, which comprises reacting a thioglycolic acid ester represented by the formula (1) wherein R represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R
1
represents an alkyl group having 1 to 4 carbon atoms, with fluoroolefin represented by the formula (2) wherein R
2
represents a fluoroalkyl group having 1 to 5 carbon atoms, in the presence of a radical generator.
Synthesis of functionalized long-chain perfluoroalkanes from methyl halodifluoroacetates: a process of difluorocarbene insertion intocopper-carbon bonds
organic halides in the presence of KF and catalytic amounts of CuI at 80–120 °C for 3–8 h in DMF gave long-chain perfluoroalkylated compounds which are considered to be former by the insertion of CF:2into carbon-copper bonds.
在KF存在下,用有机卤化物处理XCF 2 CO 2 Me(X = Cl,Br),并在DMF中于80–120°C催化量的CuI处理3–8 h,得到长链全氟烷基化化合物,认为该化合物通过在碳-铜键中插入CF:2来形成前一键。
PROCESSES FOR SEPARATION OF FLUOROOLEFINS FROM HYDROGEN FLUORIDE BY AZEOTROPIC DISTILLATION
申请人:KNAPP JEFFREY P.
公开号:US20080051612A1
公开(公告)日:2008-02-28
The present disclosure relates to a process for separating a fluoroolefin from a mixture comprising hydrogen fluoride and fluoroolefin, comprising azeotropic distillation both with and without an entrainer. In particular are disclosed processes for separating any of HFC-1225ye, HFC-1234ze, HFC-1234yf or HFC-1243zf from HF.