1: 62 percent / toluene / 2 h / 100 °C 2: 1.) nitrosyl chloride, anhydrous potassium acetate, 2.) anhydrous sodium carbonate / 1.) acetic anhydride, acetic acid, 30 min, 2.) benzene, 2 h, reflux View Scheme

potassium acetate; sodium carbonate; nitrosyl chloride 1.) acetic anhydride, acetic acid, 30 min, 2.) benzene, 2 h, reflux; Yield given. Multistep reaction;