Carboxylic Acids Question 46

Question: Which of the following esters cannot undergo Claisen self condensation

[CBSE PMT 1998]

Options:

A) $ CH_3-CH_2-CH_2-CH_2-COOC_2H_5 $

B) $ C_6H_5COOC_2H_5 $

C) $ C_6H_5CH_2COOC_2H_5 $

D) $ C_6H _{11}CH_2COOC_2H_5 $

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Answer:

Correct Answer: B

Solution:

Because it does not have a-hydrogen atom.