Question

The compounds below have the most basic nitrogen atom circled. Pick the compounds that are correctly labelled.

• A.
• B.
• C.
• D. All of these

Answer 1

The correct option is D All of these

(a) Circled $N$ is $s{p}^3$ hybridised and lone pair is not involved in resonance.
(b) Circled $N$ $s{p}^3$ hybridised and its lone pair is relatively easily available than others where lone pairs are involved in resonance with benzene ring.
(b) $N$ in Pyridine is more basic than pyrrole. It is due to involvement of lone pair of nitrogen in pyrrole in aromaticity.