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AIIMS AIIMS Solved Paper-2005

  • question_answer
    \[{{C}_{6}}{{H}_{5}}CONHC{{H}_{3}}\] can be converted into \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}NHC{{H}_{3}}\] by :

    A) \[NaB{{H}_{4}}\]        

    B)        \[{{H}_{2}}-Pd/C\]

    C)                        \[LiAl{{H}_{4}}\]        

    D)        \[Zn-Hg/HCl\]

    Correct Answer: D

    Solution :

    Amide can be converted to amine by reduction with \[Zn/Hg/HCl\]. \[{{C}_{6}}{{H}_{5}}CONHC{{H}_{3}}\xrightarrow{Zn-Hg/HCl}\]                                        \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}NHC{{H}_{3}}\] \[Amide\xrightarrow[or\,LiAl{{H}_{4}}]{Na/{{C}_{2}}{{H}_{5}}OH}\text{ }amine.\] \[Amide+B{{r}_{2}}+KOH\xrightarrow{343K}p-amine\] (Hermanns bromamide reaction)


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