Question

For the above three esters, the order of rates of alkaline hydrolysis is

• A. I > II >III
• B. II >III > I
• C. I > III > II
• D. III > I > II

Answer 1

Answer: (C)

Alkaline hydrolysis is a nucleophilic substitution reaction on ester.
Hence, presence of electron withdrawing group promotes nucleophilic attack
$-N{O}_2-R$ and $-I$
$-OMe+R,-I$
$-Me+I$ and Hyperconjugation