JEE Main & Advanced Chemistry Carboxylic Acids Question Bank Properties of Carboxylic Acids and Their Derivatives

  • question_answer
    Which of the following esters cannot undergo Claisen self condensation                                               [CBSE PMT 1998]

    A)                 \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-COO{{C}_{2}}{{H}_{5}}\]

    B)                 \[{{C}_{6}}{{H}_{5}}COO{{C}_{2}}{{H}_{5}}\]

    C)                 \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\]

    D)                 \[{{C}_{6}}{{H}_{11}}C{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\]

    Correct Answer: B

    Solution :

                    Because it does not have a-hydrogen atom.


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