Manipal Medical Manipal Medical Solved Paper-2015

  • question_answer
    On subjecting mesityl oxide to the iodoform reaction, one of the products is the sodium salt of an organic acid. Which acid is obtained?

    A) \[{{(C{{H}_{3}})}_{2}}C=CH-C{{H}_{2}}COOH\]

    B) \[{{(C{{H}_{3}})}_{2}}C=CH-CO-COOH\]

    C) \[{{(C{{H}_{3}})}_{2}}C=CH-COOH\]

    D) \[{{(C{{H}_{3}})}_{2}}CH-COOH\]

    Correct Answer: C

    Solution :

     \[\begin{align}   & C{{H}_{3}}\,\,O \\  & |\,\,\,|| \\  & C{{H}_{3}}-C=CH-C-C{{H}_{3}} \\  & C{{H}_{3}} \\  & | \\  & \xrightarrow{NaOH+l\,2}C{{H}_{3}}-C=CH-COONa+CH{{I}_{3}} \\ \end{align}\]Mesityl oxide can be prepared by aldol condensation of acetone


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