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MHT CET202521 Apr 2025Evening ShiftChemistryAminesActual

Which from following compounds is obtained when acetamide is warmed with bromine and excess conc. KOH _ ( aq ) solution?

Options

  1. ACH ₄
  2. BCH ₃ COOH
  3. CCH ₃ CH ₂ NH ₂
  4. DCH ₃ NH ₂

Correct answer

D. CH ₃ NH ₂

Step-by-step solution

The Hofmann bromamide degradation reaction converts primary amides to primary amines with one fewer carbon atom. For acetamide, CH ₃ CONH ₂ , the reaction proceeds as follows: CH ₃ CONH ₂ + Br ₂ + 4 KOH warm CH ₃ NH ₂ + K ₂ CO ₃ + 2 KBr + 2 H ₂ O , yielding methylamine. Examining the options: A) CH ₄ B) CH ₃ COOH C) CH ₃ CH ₂ NH ₂ D) CH ₃ NH ₂ Only methylamine, with one carbon, matches the product structure and carbon count reduction. The correct answer is D .

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