MGIMS WARDHA MGIMS WARDHA Solved Paper-2015

  • question_answer
    Which of the following reactions will not give a primary amine?

    A)  \[C{{H}_{3}}NC\xrightarrow[{}]{LiA{{H}_{4}}}\]

    B)  \[C{{H}_{3}}CN\xrightarrow[{}]{LiA{{H}_{4}}}\]

    C)  \[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{LiA{{H}_{4}}}\]

    D)  \[C{{H}_{3}}CN{{H}_{2}}\xrightarrow[{}]{B{{r}_{2}}/KOH}\]

    Correct Answer: A

    Solution :

    (a) \[C{{H}_{3}}NC\xrightarrow[{}]{LiAl{{H}_{4}}}\underset{Secondary\text{ }amine}{\mathop{C{{H}_{3}}NHC{{H}_{3}}}}\,\]  (b)\[C{{H}_{3}}CN\xrightarrow[{}]{LiAl{{H}_{4}}}\underset{Primary\text{ }amine}{\mathop{C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}}}\,\]  (c)\[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{LiAl{{H}_{4}}}\underset{Primary\text{ }amine}{\mathop{C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}}}\,\]  (d)\[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{B{{r}_{2}}/KOH}\underset{Primary\text{ }amine}{\mathop{C{{H}_{3}}N{{H}_{2}}}}\,\]


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