Direct nucleophilic fluorination of carbonyl groups of benzophenones and benzils with Deoxofluor
摘要:
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.
Development of novel proton-conductive polymers for proton exchange membrane fuel cell (PEMFC) technology
申请人:Bae Chulsung
公开号:US20070048579A1
公开(公告)日:2007-03-01
New thermally and chemically stable sulfonic acid-containing polymers are synthesized via post-sulfonation of aromatic polymers. These new polymers provide unique benefits to proton exchange membrane fuel cell technology (“PEMFC”). As a sulfonic acid moiety can be easily installed into an aromatic ring via electrophilic sulfonation, even in the presence of an electron-withdrawing substituent such as —F, rigid polymers consisting of aromatic rings at either the side chain or main chain can be prepared with a wide range of substituents and flexibility in properties. Novel synthetic procedures are provided for synthesis of the polymers.
US7615300B2
申请人:——
公开号:US7615300B2
公开(公告)日:2009-11-10
Direct nucleophilic fluorination of carbonyl groups of benzophenones and benzils with Deoxofluor
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.