In connection with our work on "sulfabenzothiazoles", several tertiary am-inophenyl-thioureas are required. The usual procedure of rearranging substituted ammonium thiocyanates failed to give satisfactory results. They were prepared, according to Douglass and Dains' procedure, by the reaction of benzoyl isothiocy-anate on p-ter.amino-aniline followed by hydrolyzing the benzoyl thioureas formed. Among the products obtained, p-diethylamino-, p-N-piperidyl-and p-N-morpholinyl-thioureas and most of the intermediates are new compounds.