Question: One of the following esters cannot undergo the Claisen condensation. Which one? Write structural formulas for the Claisen condensation products of the other two. CH3CH2CH2CH2CO2CH2CH3

One of the following esters cannot undergo the Claisen condensation. Which one? Write structural formulas for the Claisen condensation products of the other two.
CH3CH2CH2CH2CO2CH2CH3
C6H5CO2CH2CH3
C6H5CH2CO2CH2CH3
Ethyl phenylacetate
Ethyl benzoate
Ethyl pentanoate

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