New bis(cyclopentadienone) containing fluorine in phenyl substituents, 4,4'
-bis[2,5-diphenyl-3-(p-fluorophenyl)-cyclopentadien-1-on-4-yl]tolane, was s
ynthesized. The interaction of this compound with various diethynylarylenes
according to the Diels-Alder reaction yielded new fluoro-containing phenyl
ated poly(phenylenes) combining good solubility in organic solvents with hi
gh thermal characteristics and low dielectric constants.