JEE Main · 2026 · 06 Apr 2026 · Shift 2 · Compounds Containing Nitrogen

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Consider the following organic reaction sequence. Choose the final product (X) from the following (consider the major product in all intermediate reactions)

(see structure)

(A)Benzene✓ Correct
(B)Phenol
(C)Propanol
(D)Chlorobenzene

Answer: (A)

Solution

Heating propanoic acid with ammonia gives propanamide, which on Hofmann bromamide degradation with

NaOH/B r_{2}

loses one carbon to give ethanamine. Ethanamine, a primary aliphatic amine, reacts with nitrous acid at 0\,

^{\circ}

C through a highly unstable diazonium salt that decomposes to ethanol. Benzenediazonium chloride then reacts with this ethanol, which acts as a reducing agent and replaces the diazonium group by hydrogen, so the major product X is benzene.

JEE Main · 2026 · 06 Apr 2026 · Shift 2 · Single correct option

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