Which of These Combinations Is Not One Which Would Result

question 138

Multiple Choice

Which of these combinations is not one which would result in the formation of essentially one Claisen condensation product when one compound is added slowly to the mixture of the other and the base employed?

• A)HCO₂Et + CH₃CH₂CO₂Et
• B)PhCO₂Et + CH₃CO₂Et
• C)(CO₂Et)₂ + PhCH₂CO₂Et
• D)(CH₃)₃CCO₂Et + CH₃CO₂Et
• E)PhCH₂CO₂Et + CH₃CO₂Et

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