SYNTHESIS AND POLYMERIZATION OF SOME ETHYNYL TRIFLUOROMETHYL NAPHTHALENES

Article abstract of DOI:10.1016/S0022-1139(00)83023-7

Some bromonaphthoic acids were fluorinated with SF4 to bromo(trifluoromethyl)naphthalenes.Although a reaction of Grignard reagent of one of the bromides with Cl2C=CF2 gave low yield of a (dichlorofluorovinyl)(trifluoromethyl)naphthalene, lithio derivatives gave the desired ethynyl(trifluoromethyl)naphthalenes in improved yields after subsequent eliminations of the vinylic halogens with n-butyllithium.Polymerization of the acetylenes was carried out with photo-activated W(CO)6 catalyst to yield high-molecular-weight polymers.