Question:
Which of the following esters cannot undergo Claisen self-condensation?
Which of the following esters cannot undergo Claisen self-condensation?
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Absence of α-hydrogen prevents Claisen condensation.
Updated On: Mar 18, 2026
- CH₃CH₂CH₂COOC₂H₅
- C₆H₅COOC₂H₅
- C₆H₁₁CH₂COOC₂H₅
- C₆H₅CH₂COOC₂H₅
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The Correct Option is B
Solution and Explanation
Step 1: Condition for Claisen condensation. The ester must contain at least one α-hydrogen.
Step 2: Analysis of option (2). Ethyl benzoate has no α-hydrogen adjacent to the carbonyl group.
Step 3: Conclusion. Hence, it cannot undergo Claisen self-condensation.
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