Manipal MET2011ChemistryAmines
Which of the following reactions is given by only primary amines?
Options
- AReaction with HNO ₂
- BReaction with chloroform and alcoholic KOH
- CReaction with acetyl chloride
- 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