VMMC VMMC Medical Solved Paper-2013

  • question_answer
    Formation of methyl tertiary butyl ether by the reaction of sodium tertiary butoxide and methyl bromide involves

    A)  elimination reaction

    B)  electrophilic addition reaction

    C)  nucleophilic addition reaction

    D)  nucleophilic substitution reaction

    Correct Answer: D

    Solution :

      \[\underset{\begin{smallmatrix}  \text{Sod}\text{.}\,\text{tert}\text{.}\,\text{butoxide} \\  \text{(}{{\text{3}}^{\text{o}}}\,\text{alkoxide)} \end{smallmatrix}}{\mathop{C{{H}_{3}}-\underset{C{{H}_{3}}}{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-ONa}}\,+\underset{(i)\,alkyl\,bromide}{\mathop{C{{H}_{3}}Br}}\,\xrightarrow{\begin{smallmatrix}  \text{Nucleophilic} \\  \text{Substitution} \end{smallmatrix}}\]\[\underset{tert.\,butyl\,ether}{\mathop{C{{H}_{3}}-\underset{C{{H}_{3}}}{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-OC{{H}_{3}}}}\,+NaBr\]


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