4,4’-Bistrimethylsiloxy diphenylsulfone was polycondensed with six different alkylating agents in N-Methylpyrrolidone/K2CO3 mixtures and polyethers were isolated from all experiments. The best results were obtained with the mesylate of bis(2-hydroxyethyl)hydroquinone, BHEH. Similar results were found when silylated n-butyl-3,5-dihydroxybenzoate was used. A comparison of five different reaction media revealed that NMP gives the highest molecular weights. Finally, various silylated diphenols containing functional groups were polycondensed with the mesylate of BHEH. In this way polyethers with pending ester, aldehyde, keto, and amide groups were obtained.