Direct SNH amidation of 6- and 7-nitroquinoline N-oxides in anhydrous DMSO allowed to obtain N-oxides of 2- and 8-aroylaminonitroquinolines, respectively. 5-Nitroquinoline N-oxide was transformed into a mixture of amides derived from the N-oxides of 5-nitro and 5-nitrosoquinolines. 8-Nitroquinoline N-oxide underwent destruction under the same conditions.