Abstract Reactions of 4, 4'-dihalogenated benzhydrols and 1, 1-diphenylethanols Xab and XIab with sodium hydride and 2-dimethylaminoethyl chloride and 2-pyrrolidinoethyl chloride afforded the ethers Vab-VIIIab. 2-Bromoethyl ethers IXab, obtained from the benzhydrols Xab and 2-bromoethanol by treatment with sulfuric acid, were subjected to substitution reactions with 4-phenylpiperidin-4-ol, 4-(2-tolyl) piperidin-4-ol (XVI), 4-(4-fluorophenyl) ...