Utilization of N,N-diethyl-3,5-difluorobenzene sulfonamide to prepare functionalized poly(arylene ether)s

摘要: Abstract A series of poly(arylene ether)s carrying a pendant diethyl sulfonamide group was prepared by the meta activated nucleophilic aromatic substitution reaction new aryl difluoride monomer, N , -diethyl-3,5-difluorobenzene sulfonamide. The synthesis achieved via one-step amine with commercially available 3,5-difluorobenzenesulfonyl chloride. Model reactions and NMR data indicated that fluoride atoms were sufficiently group, located in position, to provide access high molecular weight ether)s. corresponding ether)s, bisphenol A, AF, 4,4′-biphenol, hydroquinone, resorcinol, 4,4′-dihydroxydiphenyl ether. polymers characterized spectroscopy, size exclusion chromatography, thermogravimetric analysis, differential scanning calorimetry. based displayed moderate thermal stability 5% loss temperatures ranging from 366 385 °C, but possessed relatively low glass transition temperatures, 72–142 °C.