Step 1: Nitration of benzene Benzene + conc. H2SO4 + conc. HNO3 with heat & under reflux --> Nitrobenzene Step 2: Reduction of nitrobenzene Nitrobenzene + tin + conc. HCl with heat & under reflux --> Phenylamine Step 3: Reacting phenylamine with an acid chloride Phenylamine + ethanoyl chloride --> N-phenylethanamide