The electrochemical fluorination of organosulfur compounds in triethylamine/hydrofluoric acid (Et3N-5 HF) with polystyrene-supported iodobenzene (PSIB) and tetraethylammonium chloride (Et4NCl) was performed successfully in an undivided cell under constant current conditions to afford the corresponding fluorinated compounds in moderate to good yields. Recycle use of the PSIB could be achieved due to
HOLLOW FIBER, DOPE SOLUTION COMPOSITION FOR FORMING A HOLLOW FIBER, AND METHOD FOR MANUFACTURING A HOLLOW FIBER USING THE SAME
申请人:IUCF-HYU (Industry-University Cooperation
Foundation Hanyang University)
公开号:EP2281926A2
公开(公告)日:2011-02-09
Disclosed is a hollow fiber that includes a hollow positioned at the center of the hollow fiber, macropores positioned at adjacent to the hollow, and mesopores and picopores positioned at adjacent to macropores, and the picopores are three dimensionally connected to each other to form a three dimensional network structure. The hollow fiber includes a polymer derived from polyimide, and the polyimide includes a repeating unit obtained from aromatic diamine including at least one ortho-positioned functional group with respect to an amine group and dianhydride.
The carbonyl groups of diaryl ketones and diaryl diketones were directly fluorinated with bis(2-methoxyethyl)aminosulfur trifluoride (Deoxofluor) under neat conditions to give the Corresponding gem-difluorides and tetrafluorinated derivatives in moderate to high yields. (C) 2008 Elsevier Ltd. All rights reserved.
Electrochemical Fluorination Using Halogen Mediators in Ionic Liquid Hydrogen Fluoride Salt