The –NO 2 group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When –NO 2 group is present at ortho or para positions of a leaving group (Nucleofuge) it activates the ring for nucleophilic attack. The reduction of –NO 2 group by metal in acid causes its reduction to –NH 2 group and then the ring becomes strongly activated for a electrophilic attack. The strong activation of –NH 2 group is moderated by its acylation with CH 3 COCl to –NHAc group. Deacylation is carried out by hydrolysis with H 3 O + or OH – . The ring alkylation by using RX/AlX 3 is not possible in presence of –NO 2 or –NH 2 group but is possible in presence of –NHAc group.

(i) The product (G) is :