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Manipal MET2011ChemistryAmines

Which of the following reactions is given by only primary amines?

Options

  1. AReaction with HNO ₂
  2. BReaction with chloroform and alcoholic KOH
  3. CReaction with acetyl chloride
  4. DReaction with Grignard reagent

Correct answer

B. Reaction with chloroform and alcoholic KOH

Step-by-step solution

When a primary amine reacts with chloroform in presence of alco. KOH , it gives iso-cyanide which has abnoxious odour. This reaction is known as carbylamine reaction and it is given only by primary amines. aligned primary amine RHN ₂ + CHCl ₃+ alco. 3 KOH RNC +3 KCl +3 H ₂ O aligned

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