CMC Medical CMC-Medical Ludhiana Solved Paper-2014

  • question_answer
    Given the following sequence of reactions,\[C{{H}_{3}}C{{H}_{2}}I\xrightarrow{NaCN}A\xrightarrow[Partial\,\,hydrolysis]{O{{H}^{-}}}B\]\[\xrightarrow[{}]{B{{r}_{2}}/NaOH}C\] The major product C is

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

    B)  \[C{{H}_{3}}C{{H}_{2}}\underset{O}{\mathop{\underset{\mathbf{|}\,\,\mathbf{|}}{\mathop{C}}\,}}\,-NHBr\]

    C)  \[C{{H}_{3}}C{{H}_{2}}-COON{{H}_{4}}\]

    D)  \[C{{H}_{3}}C{{H}_{2}}-\underset{O}{\mathop{\underset{|\,\,|}{\mathop{C}}\,}}\,-NB{{r}_{2}}\]

    Correct Answer: A

    Solution :

                    \[C{{H}_{3}}C{{H}_{2}}I\xrightarrow{NaCN}C{{H}_{3}}C{{H}_{2}}CN\xrightarrow{O{{H}^{-}}}\]  \[C{{H}_{3}}C{{H}_{2}}CON{{H}_{2}}\xrightarrow{B{{r}_{2}}/NaOH}C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]


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