Question

Which nitrogen is maximum basic?

• A. $1$
• B. $2$
• C. $3$
• D. All are equally basic

Answer 1

Answer: (B)

$2$

The more basic nitrogen is "2" because the nitrogen at '1' is involved in resonance with the benzene ring and nitrogen at '3' is in resonance with carbonyl carbon and is slightly $s{p}^2$.

But nitrogen at '2' position is $s{p}^3$ hybridized and hence is more basic.

Hence the correct option is B.