Problems and exercisesAromatic Nitration
1. Can benzene be aminated?
Can an NH2 group be introduced directly into an aromatic ring by SEAr? Can you think of an indirect method?

2. The nitronium ion
Write the reaction that forms the nitronium ion. What role does nitric acid play in it?
3. Dinitration
Why does the nitration of benzene easily stop at nitrobenzene?