ChemInform Abstract: New Activated Bisfluoroaromatic Compounds.

Abstract

New Activated Bisfluoroaromatic Compounds.-Palladium catalyzed cross-coupling of the bis(phenyl bromides) (I) with acetylene (II) gives the bis (fluorophenylethynyl) derivatives ( III) which are smoothly oxidized to the corresponding bis( fluorophenylglyoxalyl) derivatives (IV). Compounds (IV) can be used in the synthesis of polyethers showing liquid crystalline properties. -(RUSANOV, A. L.; KESHTOV, M. L.; BELOMOINA, N. M.; MIKITAEV, A. K.; SARKISYAN, G. B.; KESHTOVA, S. V.; Izv.

Fluorinated phenylated polyphenylenes with nanoporous structures and ultralow dielectric constants formed in supercritical carbon dioxide

“…Of special interest are fluorinated phenylated polyphenylenes because the incorporation of fluorine into macromolecules defines the further decrease in dielectric constants and the improvement of solubility of polymers [12,13]. These advantages of fluorinated phenylated polyphenylenes have attracted consider able attention of researchers to these polymers as interlayer dielectrics in multi integrated circuits.…”