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JEE Main · 2025 · 22 Jan 2025 · Shift 1 · Compounds Containing Nitrogen

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The products formed in the following reaction sequence are :
  1. (A)(see structure)
  2. (B)(see structure)
  3. (C)(see structure),
    ✓ Correct
  4. (D)(see structure),

Answer: (C)

Solution

Starting from nitrobenzene:

brominates the ring ortho/para to the nitro group, giving a bromonitrobenzene.

reduces the nitro group to an amine, giving a bromoaniline.

at diazotises the amine to the aryldiazonium chloride.

then reduces the diazonium salt: ethanol replaces with while itself being oxidised to acetaldehyde, releasing nitrogen:


The products are bromobenzene and acetaldehyde.

JEE Main · 2025 · 22 Jan 2025 · Shift 1 · Single correct option

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