CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2005

  • question_answer
    Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as :

    A)  Perkins reaction

    B)  Cannizaros reaction

    C)  Sandmeyers reaction

    D)  Claisen condensation

    Correct Answer: B

    Solution :

    \[2{{C}_{6}}{{H}_{5}}CHO\xrightarrow[\begin{smallmatrix}  Cannizaros \\  reaction \end{smallmatrix}]{NaOH}{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH\]\[+{{C}_{6}}{{H}_{5}}COONa\] This reaction is given by aldehydes which do not have a-hydrogen atom.


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