Aj. Lawson et al., NOVEL AROMATIC POLY(ETHER KETONE)S .3. SYNTHESIS OF DIAMINE PRECURSORS WITH 4-8 BENZENE RINGS LINKED BY ETHER, KETONE AND SULFONE GROUPS, Journal of materials chemistry, 4(10), 1994, pp. 1527-1532
Fourteen new diamines have been synthesized for use in the work descri
bed in parts 1 and 2. A combination of Friedel-Crafts acylation of are
nes with nitro- and fluoro-benzoyl chlorides and benzene dicarbonyl ch
lorides, Ullmann synthesis of aryl ethers from phenols and fluoroarene
s and reduction of nitro to amino groups by transfer hydrogenation has
been employed.