Manipal Medical Manipal Medical Solved Paper-2012

  • question_answer
    Acetyl bromide reacts with excess of\[C{{H}_{3}}MgI\] followed by treatment with a saturated solution of\[N{{H}_{4}}Cl\]gives

    A)  acetone

    B)  acetamide

    C)  2-methyl-2-propanol

    D)  acetyl iodide

    Correct Answer: C

    Solution :

     \[\underset{Acetyl\,bromide}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  |\,\,| \\  O \end{smallmatrix}}{\mathop{C}}\,-Br}}\,+C{{H}_{3}}MgI\xrightarrow[{}]{{}}C{{H}_{3}}-\underset{\begin{smallmatrix}  |\,\,| \\  O \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}\] \[\xrightarrow[{}]{C{{H}_{3}}MgI}C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}}\,-OMgI\] \[\xrightarrow[{}]{aq.\,N{{H}_{4}}Cl}\underset{2-methyl-2-propanol}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}}\,-OH}}\,\]


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