Oxidation reaction of cumene with molecular oxygen at 100⁰С in the presence of N-(p-acetamidphenyl) imide dichloromaleic acid synthesized has been investigated in vitro by the method developed by us. It is found that imide indicated is an active oxidation catalyst, leading to 70% conversion of hydrocarbon and intensive disintegration of  hydroperoxide to form phenol, аcetophenone, 2-phenyl-2 propanol, 4-methyl-benzoic acid and tert-butybenzene.  N-(p-acet­amid­phenyl)­mide dichloro­maleic acid can be recommended as an active catalyst of synthesis of secondary products of aerobic oxidation alkylbenzenes.