Question

Consider the following compound:

• A. Nitrogen A is more basic than Nitrogen B.
• B. Nitrogen A is less basic than Nitrogen B.
• C. Nitrogen A is equally basic as Nitrogen B.
• D. Nothing can be said about basicity.

Answer 1

The correct option is B Nitrogen A is less basic than Nitrogen B.

Lone pair of Nitrogen A is involved in conjugation , and thus making the ring aromatic. So, it is not available for donation.
Lone pair on Nitrogen B is not involed in resonance.
So, Nitrogen A is less basic than Nitrogen B.