Conversions of monofluoroalkyl and alkyl bromides to the corresponding dialkyl disulfides in a one??pot synthesis using thiourea followed by basic hydrogen peroxide are described. Modified methods afford access to unsymmetrical disulfides and sulfides. ... Conversions of monofluoroalkyl and alkyl bromides to the corresponding dialkyl disulfides in a one??pot synthesis using thiourea followed by basic hydrogen peroxide are described. Modified methods afford access to ...