RAJASTHAN ­ PET Rajasthan PET Solved Paper-2002

  • question_answer
    In the following reaction X will be \[X+B{{r}^{2}}+KOH\xrightarrow[{}]{{}}C{{H}_{3}}N{{H}_{2}}\]

    A)  \[C{{H}_{3}}-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{C}}\,-N{{H}_{2}}\]

    B)  \[C{{H}_{3}}-C{{H}_{2}}-N{{H}_{2}}\]

    C)  \[C{{H}_{3}}-N{{O}_{2}}\]     

    D)  \[C{{H}_{3}}-C{{H}_{2}}-N{{O}_{2}}\]

    Correct Answer: A

    Solution :

    \[\underset{acetamide}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{C}}\,-N{{H}_{2}}}}\,+B{{r}_{2}}+KOH\xrightarrow[{}]{{}}\underset{methyl\text{ }amine}{\mathop{C{{H}_{3}}N{{H}_{2}}}}\,\] This is Hofmann's degradation reaction.


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