p-Nitroaniline is obtained by
sulphanilic acid HNO3−−−−→
benzenesulphonic acid HNO3/H2SO4−−−−−−−−−→
aniline 2.aq.NaOH−−−−−−−−−−→1.HNO3/H2SO4
anline 1.acetylation,2.HNO3/H2SO4−−−−−−−−−−−−−−−−−−→3.aq.NaOH,△