Английская Википедия:4,4'-Difluorobenzophenone

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Шаблон:Chembox 4,4’-Difluorobenzophenone is an organic compound with the formula of (FC6H4)2CO. This colorless solid is commonly used as a precursor to PEEK, or polyetherether ketone, a so-called high performance polymer. Because PEEK is resistant to attack, it is commonly used in carbon fiber coatings and cable insulation.

Synthesis

4,4’-Difluorobenzophenone is prepared by the acylation of fluorobenzene with p-fluorobenzoyl chloride. The conversion is typically conducted in the presence of an aluminium chloride catalyst in a petroleum ether solvent.[1]

FC6H4C(O)Cl + C6H5F → (FC6H4)2CO + HCl

Uses

The polymer PEEK is generated from the reaction of 4,4'-difluorobenzophenone with the salts of 1,4-benzenediol.[2]

C6H4(ONa)2 + (FC6H4)2CO → 1/n[(C6H4O2)(C13H8O)]n + 2 NaF

References

  1. ↑ Шаблон:Cite journal
  2. ↑ David Parker, Jan Bussink, Hendrik T. van de Grampe, Gary W. Wheatley, Ernst-Ulrich Dorf, Edgar Ostlinning, Klaus Reinking "Polymers, High-Temperature" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2002.
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Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:4,4%27-Difluorobenzophenone&oldid=12851782