WB JEE Medical WB JEE Medical Solved Paper-2012

  • question_answer
    Which one of the. following methods is used to prepare \[M{{e}_{3}}COEt\]with a good yield?

    A)  Mixing EtONa with \[M{{e}_{3}}CCl\]

    B)  Mixing \[M{{e}_{3}}CONa\]with \[EtCl\]

    C)  Heating a mixture of (1:1) EtOH and \[M{{e}_{3}}COH\]in the presence of cone. \[{{H}_{2}}S{{O}_{4}}\]

    D)  Treatment ofMe3COHwith \[EtMgI\]

    Correct Answer: B

    Solution :

     \[M{{e}_{3}}CONa\xrightarrow[\begin{smallmatrix}  ({{1}^{o}}\,alkl\,halide) \\  -NaCl \end{smallmatrix}]{EtCl}M{{e}_{3}}COEt\] This reaction is known as Williamsons synthesis.


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