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Manipal MET2019ChemistryAmines

The main product of the reaction of CH ₃ CONH ₂ with Br ₂ in aqueous potassium hydroxide medium is

Options

  1. ACH ₃- CH ₂- NH ₂
  2. BCH ₃ Br
  3. CCH ₃ CONHBr
  4. DCH ₃ NH ₂

Correct answer

D. CH ₃ NH ₂

Step-by-step solution

This is Hoffmann's bromide reaction. In this reaction, product compound has one less ' C ' atom than reactant. So it causes shortening of ' C ' chain. aligned &- CONH ₂ - NH ₂ & CH ₃ CONH ₂+ Br ₂+ 4 KOH CH ₃ NH ₂ &+2 KBr +2 H ₂ O + K ₂ CO ₃ aligned

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