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BITSAT2011ChemistryAldehydes and KetonesActual

Which of the following esters cannot undergo Claisen self condensation?

Options

  1. ACH ₃ CH ₂ CH ₂ CH ₂ COOC ₂ H ₅
  2. BC ₆ H ₅- COOC ₂ H ₅
  3. CC ₆ H ₁₁ CH ₂ COOC ₂ H ₅
  4. DC ₆ H ₅ CH ₂ COOC ₂ H ₅

Correct answer

B. C ₆ H ₅- COOC ₂ H ₅

Step-by-step solution

Claisen condensation is given by esters having two -hydrogen atoms.

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