Multicomponent cyclothiomethylation of phenylenediamines and 4,4'-diaminodiphenyls with formaldehyde and 1,2-ethanedithiol

Abstract

One-pot synthesis of bis-1,5,3-dithiazepanes by cyclothiomethylation of o-phenylenediamine, 4,4'-diaminodiphenyl, 4,4'-diaminodiphenyl oxide, and 4,4'-diaminodiphenylmethane with formaldehyde and 1,2- ethanedithiol was performed. Sorption properties of the newly synthesized bis[4-(1,5,3-dithiazepan-3-yl)-phenyl] oxide were investigated by the batch technique. High efficiency of the recovery of palladium(II) with this reagent from hydrochloric acid solutions at room temperature was shown.