Consider the three aromatic molecules (P, Q and R) whose structures have been given below : The correct order regarding the reactivity of these compounds with $\mathrm{Ph}-\underset{(+)}{\mathrm{N}} \equiv \mathrm{NCl}^{(-)}$under optimum but slightly acidic medium is :
Select the correct option:
A
P>Q>R
B
R >P>Q
C
R>Q>P
D
P>R>Q
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Rate of ESR $\propto$ nucleophilicity of benzene ring and due to SIR rate of reaction will decrease.
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