New Electrophilic Reaction of Perfluoroalkylethylenes. Synthesis and Some Reactions of 1-Halo-1,1,2-trihydroperfluoroalkenes-2
摘要:
Perfluoroalkylethylenes, R(f)CH=CH2, react with chlorosulfonic acid in the presence of TaF5 or NbF5 catalyst to form allyl chlorides, Z-R(f)CF=CHCH2Cl. These chlorides, or their corresponding bromides, also can be made by the BF3-catalyzed reaction of R(f)CH=CH2 with HCl or HBr in anhydrous HF. The allylic chlorine in the newly synthesized compounds Z-R(f)CF=CHCH2Cl can be easily replaced by reaction with nucleophiles such as I-, Br-, HO-, or (CF3)(2)CFO-.
Facile preparation of α,ω-diynes bearing a perfluoroalkylene linker –(CF2)n– (n = 4,6) and their application for Co- or Rh-catalyzed [2+2+2]cycloaddition reactions affording aromatic compounds with perfluoroalkylene units
α,ω-Diynes bearing a perfluoroalkylene linker HC≡C(CF2)nC≡H (n = 4,6) were obtained from commercially available α,ω-dienes H2C=CH(CF2)nCH=CH2 via bromination and dehydrobromination. In the presence of CoCl2-Zn-ZnI2 catalyst, the diyne HC≡C(CF2)4C≡H underwent [2+2+2] cycloaddition reactions with terminal alkynes to afford benzene derivatives fused with an octafluorocyclohexene moiety. In this reaction
The present invention relates to an electrochromic polymer compound composed of a hyperbranched polymer having electrochromic characteristics derived from a quaternary pyridinium salt, a terephthalic acid diester or a biphenyl-4,4′-diester structure, and a varnish, a thin film structure and an electrochromic device that are obtained by the polymer compound. The electrochromic material has high response speed, high coloring efficiency, and excellent repetition stability and can be used for a long time, and has excellent solubility in various solvents.
FUMARIC ACID DIESTER-CINNAMIC ACID ESTER-BASED COPOLYMER, PRODUCTION METHOD THEREOF AND FILM USING THE SAME
申请人:TOSOH CORPORATION
公开号:US20150291751A1
公开(公告)日:2015-10-15
To provide a novel fumaric acid diester-cinnamic acid ester-based copolymer having a high molecular weight, which is expected to maintain excellent strength or ensures excellent toughness even when formed into a film, a method for efficiently producing the copolymer, and a film using the same. The fumaric acid diester-cinnamic acid ester-based copolymer contains a fumaric acid diester residue unit, a cinnamic acid ester residue unit having an alkyl group with a carbon number of 1 to 6, and a residue unit of a polyfunctional monomer having two or more radical polymerizable functional groups.