JEE Main & Advanced Sample Paper JEE Main Sample Paper-45

  • question_answer
    Which of the following carboxylic acids undergoes decarboxylation easily?

    A) \[{{C}_{6}}{{H}_{5}}-CO-C{{H}_{2}}-COOH\]                      

    B) \[{{C}_{6}}{{H}_{5}}-CO-COOH\]

    C)  \[{{C}_{6}}{{H}_{5}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-COOH\]

    D)  \[{{C}_{6}}{{H}_{5}}-\underset{\begin{smallmatrix}  | \\  N{{H}_{2}} \end{smallmatrix}}{\mathop{CH}}\,-COOH\]

    Correct Answer: A

    Solution :

    The \[\beta \]-keto acids on heating easily undergo decarboxylation via a six membered cyclic transition state.

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