Question

In the molecule

$\overset{\quad H^{+}\quad}{\rightarrow}$

The correct ease of protonation follows order -

• A. d > b > c > a
• B. a > d > b > c
• C. a > b > c > d
• D. a > b > d > c

Answer 1

Answer: (C)

a > b > c > d

Answer 2

$\therefore$ At a and b positions resonance

stabilization is possible. In c, + ve charge is on c & in d on N.