Which is most reactive of the following

Options

(a) Ethyl acetate
(b) Acetic anhydride
(c) Acetamide
(d) Acetyl chloride

Correct Answer:

Acetyl chloride

Explanation:

The order of reactivity of acid derivatives toward different reactions decreases in the order: RCOCl > (RCO₂)O > RCOOR’ > RCONH₂. In other words, the reactivity decreases as the basicity of the leaving group increases i.e. Cl⁻