PreparationEasyQuestion 820003
Question
The Gabriel synthesis uses phthalimide to prepare:
- APrimary aliphatic aminesCorrect
- BSecondary amines
- CTertiary amines
- DAromatic amines
Correct answer
Primary aliphatic amines
Explanation
Gabriel synthesis: Phthalimide + KOH → potassium phthalimide → + RX (alkyl halide) → N-alkylphthalimide → hydrolysis with acid/base → primary amine (RNH₂) + phthalic acid. It gives only 1° amines free from 2° and 3° impurities.