- METHOD OF MAKING PERFLUOROCYCLOBUTANE-CONTAINING MONOMER
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The invention pertains to a multi-step process for making polyfunctional aromatic compounds comprising two phenyl rings bearing reactive groups susceptible of polycondensation reaction to provide polycondensed polymers, said method using economic raw materials, and possessing high selectivity and overall yield.
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Paragraph 0057-0058
(2020/11/30)
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- Synthesis and Reactivity of Fluoroalkyl Copper Complexes by the Oxycupration of Tetrafluoroethylene
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The copper(I)-mediated generation of -OCF2CF2- moieties by the oxycupration of tetrafluoroethylene (TFE) using either copper aryloxides or alkoxides is disclosed. The key intermediates, 2-aryloxy-1,1,2,2-tetrafluoroethyl and 2-alkoxy
- Ohashi, Masato,Adachi, Takuya,Ishida, Naoyoshi,Kikushima, Kotaro,Ogoshi, Sensuke
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p. 11911 - 11915
(2017/09/21)
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- Method for preparing trifluorovinyl aryl ether compound from dihalide trifluoroethane
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The invention relates to a method for synthesizing a trifluorovinyl aryl ether compound, and belongs to the field of chemical synthesis. The dihalide trifluoroethane is taken as the starting material, reacts with a phenolic compound under proper conditions to synthesize the trifluorovinyl aryl ether compound. Compared with the traditional method, the provided synthesis method has the characteristics of mild reaction condition, simple operation, moderate yield and the like, has the advantages of simple process, low cost, low pollution and the like, and is expected to realize industrialized production.
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Paragraph 0024-0027; 0043; 0055; 0059; 0063; 0071; 0087
(2017/08/29)
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- Nucleophilic difluoroalkylation of benzophenones, benzaldehydes and Schiff's bases by tetrafluoroethyl ether and difluoroacetamide
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From gem-difluoromethyl group of 1,1,2,2-tetrafluoroethyl ether and 2,2-difluoroalkylamide, proton can be removed by potassium bis(trimethylsilyl)amide in DMF, THF or toluene. The generated nucleophiles are then condensed with benzophenones, benzaldehydes or Schiff's bases to provide new fluorinated alcohols and amines. Some interesting solvent effects are also observed.
- Vaidyanathaswamy,Raman, G. Anantha,Ramkumar,Anand, Rajdeep
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- Pentafluorosulfanyldifluoroacetic acid: Rebirth of a promising building block
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Three novel, easily scalable routes for the synthesis of pentafluorosulfanyldifluoroacetic acid, SF5CF2C(O)OH, are described. Reactions of its acid chloride with amines and alcohols led to a small library of 15 amides and five esters
- Matsnev, Andrej V.,Qing, Si-Yan,Stanton, Mark A.,Berger, Kyle A.,Haufe, Guenter,Thrasher, Joseph S.
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supporting information
p. 2402 - 2405
(2014/05/20)
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- A novel semi-fluorinated graft copolymer containing perfluorocyclobutyl aryl ether-based backbone
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The synthesis of a series of novel semi-fluorinated graft copolymers bearing perfluorocyclobutyl (PFCB) aryl ether-based backbone and polystyrene side chains is described. This work initially focused on the synthesis of a trifluorovinyl ether (TFVE) monomer containing a bromine atom, which could be employed as an initiating site for atom transfer radical polymerization (ATRP). Thermal cyclopolymerization of this TFVE monomer provided a macromolecular initiator followed by subsequent initiating ATRP of styrene to afford the desired PFCB aryl ether-based graft copolymers.
- Zhang, Sen,Liu, Hao,Deng, Yan,Huang, Xiaoyu
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scheme or table
p. 184 - 189
(2012/02/05)
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- Influence of structural factors on the thermolysis of 2- alkoxytetrafluoropropionic acid salts
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2,2,2-Trifluoroethyl and phenyl trifluorovinyl ethers were obtained by the thermolysis of 2-substituted potassium tetrafluoropropionates ROCF(CF 3)COOK (R = CF3CH2; Ph). The reaction mechanism is analyzed.
- Zeyfman,Sterlin
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experimental part
p. 657 - 659
(2011/02/17)
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- Synthesis and characterization of a novel perfluorocyclobutyl aromatic ether-based ABA triblock copolymer
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A novel perfluorocyclobutyl aromatic ether-based ABA triblock copolymer (A: polystyrene block; B: perfluorocyclobutyl aromatic ether-based fluoropolymer block) was synthesized by combination of atom transfer radical polymerization (ATRP) of styrene and th
- Huang, Xiaoyu,Lu, Guolin,Peng, Dan,Zhang, Sen,Qing, Feng-Ling
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p. 7299 - 7305
(2007/10/03)
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- Preparation of halofluoroalkyl ethers
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Alkyl or aryl 1,1-difluoroalkyl ethers, e.g., 1,1,2-trifluoro-2-chloro-2-iodoethyl phenyl ether, are prepared by reacting an alkoxide or phenoxide with a 1,1-difluoro-1,2-dihaloethane (with the proviso that halo is not fluoro and at least one of the halo substituents is bromo or iodo) in an organic solvent at temperatures ranging from about -30° C. to about 100° C. These compounds may be dehalogenated with zinc to form the corresponding vinyl ethers. The reaction of halogen derivatives of fluorocarbons with nucleophiles is dramatically facilitated by a bromo or iodo substituent in the beta position.
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