Synthesis and characterization of polymer containing oxazole

Abstract

4-Bromo-2,5-diphenyloxazole was successfully synthesized with reasonable yield via a cyclization of benzoyl cyanide and benzaldehyde in the presence of hydrogen bromide in ether. It was then subjected to Stille coupling reaction by reaching with tributyl(vinyl)tin using tris(dibenzylidineacetone)dipalladium(0) as a catalyst to 2,5-diphenyl-4-vinyloxazole. Two copolymers of 2,5-diphenyl-4-vinyloxazole were prepared by copolymerization with methyl methacrylate and styrene at 5% by weightof monomer. Methyl methacrylate copolymer showed thermal stability at 169 °C. The styrene copolymer showed higher thermal stability at 365 °C and had glass transition temperature 96 °C. Both exhibited the distinct fluorescence of the