Question:
Suggest a route for the preparation of nitrobenzene starting from acetylene?
Solution:
(i) By intermolecular condensation method, we can cycle acetylene and then treated at high temperature in a red hot iron tube.
(ii) The aliphatic compound thus converted into benzene is treated with con.HNO3 and Conc.H2SO4 which undergoes nitration to give nitrobenzene.