Investigation of the HF-catalyzed condensation reaction to diarylhexafluoropropanes

Abstract

HF-catalyzed condensation of 2-hydroxy-2-arylhexafluoropropanes, e.g. I, with suitably substituted arenes, e.g. II, leads to hexafluoroisopropylidene-bridged intermediates, e.g. III, for 6F-monomers. ▪ The condensation reaction was carried out with several substrates, side products were characterized and their formation under different reaction conditions was studied. 6F-Monomers are building blocks for a variety of polycondensates with high thermo-oxidative stability and low dielectric constant.