Question:
Which one of the following can be prepared by Gabriel phthalimide synthesis?
Which one of the following can be prepared by Gabriel phthalimide synthesis?
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Gabriel synthesis → only primary aliphatic amines.
Updated On: May 2, 2026
- Aniline
- o-Toluidine
- Benzylamine
- N-Methylethanamine
- 4-Bromoaniline
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The Correct Option is C
Solution and Explanation
Concept: Gabriel phthalimide synthesis
---
Step 1: Reaction idea
Gabriel synthesis prepares:
• Only primary aliphatic amines ---
Step 2: Important restriction
• Does NOT work for aromatic amines
• Does NOT give secondary/tertiary amines ---
Step 3: Analyze options
• Aniline → aromatic ❌
• o-Toluidine → aromatic ❌
• Benzylamine → primary aliphatic (side-chain) ✅
• N-Methylethanamine → secondary ❌
• 4-Bromoaniline → aromatic ❌ --- Final Answer: \[ \boxed{\text{Benzylamine}} \]
---
Step 1: Reaction idea
Gabriel synthesis prepares:
• Only primary aliphatic amines ---
Step 2: Important restriction
• Does NOT work for aromatic amines
• Does NOT give secondary/tertiary amines ---
Step 3: Analyze options
• Aniline → aromatic ❌
• o-Toluidine → aromatic ❌
• Benzylamine → primary aliphatic (side-chain) ✅
• N-Methylethanamine → secondary ❌
• 4-Bromoaniline → aromatic ❌ --- Final Answer: \[ \boxed{\text{Benzylamine}} \]
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