A Novel Catalytic Pathway for Perfluoroacyl Peroxide Synthesis
摘要:
[GRAPHICS]A new catalytic method for synthesis of bis(perfluoroacyl) peroxides (BPFAP) was elaborated by using hydrogen peroxide and perfluoroacyl anhydrides. The desired BPFAP were formed quantitatively in situ when perfluoroacyl anhydride was mixed with hydrogen peroxide (ratio greater than or equal to 2:1) in the presence of a catalytic amount of the carboxylate RfCOO- M+. The essentially irreversible character of this process was shown experimentally and supported on the basis of DFT calculations. The synthesis of new acetyltrifluoroacetyl peroxides is also described.
Compositions including fluorinated peroxides, methods of making, and the use thereof
申请人:——
公开号:US20030004369A1
公开(公告)日:2003-01-02
Methods of making compositions including fluorinated peroxides are disclosed. The compositions are useful, for example, for reacting with organic compounds. In one embodiment, novel peroxides are provided.
Compounds with growth hormone releasing properties
申请人:——
公开号:US20030055261A1
公开(公告)日:2003-03-20
Compounds of peptide mimetic nature having the general formula I formula I
1
wherein a and b are independently 1 or 2, R
1
and R
2
are independently H or C
1-6
alkyl, G and J are independently, inter alia, aromats, and D and E are independently several different groups are growth hormone secretagogous with improved bioavailability.
Process for preparation of fluorine-containing polymer films
申请人:TOKUYAMA SODA KABUSHIKI KAISHA
公开号:EP0155173A2
公开(公告)日:1985-09-18
A fluorine-containing polymer film is prepared by flow-casting a fluorine-containing vinyl monomer, which is liquid under polymerization conditions, in the form of a film having a thickness of up to 1 mm and polymerizing the flow-cast monomer.
PERFLUOROALKYLATED NAPHTHALOCYANINE DERIVATIVE, PRODUCTION THEREOF, AND OPTICAL RECORDING MEDIUM
申请人:NIPPON OIL AND FATS COMPANY, LIMITED
公开号:EP0491951A1
公开(公告)日:1992-07-01
A perfluoroalkylated naphthalocyanine derivative which is excellent in weathering resistance and very highly soluble in various solvents and has a specified structure adapted for film formation; and an optical recording medium produced therefrom which enables recording by means of focused beams of a semiconductor laser. The above derivative is produced by the reaction of a perfluoroalkanoyl peroxide having a specified structure with a naphthalocyanine.
PROCESS FOR PRODUCING TETRAFLUOROETHYLENE/HEXAFLUOROPROPYLENE COPOLYMER
申请人:DAIKIN INDUSTRIES, LIMITED
公开号:EP0606492A1
公开(公告)日:1994-07-20
A process for producing a tetrafluoroethylene/hexafluoropropylene copolymer by copolymerizing tetrafluoroethylene with hexafluoropropylene in an aqueous medium using di(fluoroacyl) peroxide as the polymerization initiator, wherein a fluoroalkylcarboxylic acid is fed to the reaction system. The obtained copolymer has a stabilized molecular weight and the polymerization initiator can be utilized more efficiently.