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JEE Main & Advanced Chemistry Nitrogen Containing Compounds Question Bank Properties of Nitrogen Containing Compounds

  • question_answer
    A nitrogen containing organic compound gave an oily liquid on heating with bromine and potassium hydroxide solution. On shaking the product with acetic anhydride, an antipyretic drug was obtained. The reactions indicate that the starting compound is                                      [KCET 2004]

    A)                 Aniline 

    B)                 Benzamide

    C)                 Acetamide         

    D)                 Nitrobenzene

    Correct Answer: B

    Solution :

               \[{{C}_{6}}{{H}_{5}}CON{{H}_{2}}+B{{r}_{2}}+KOH\to {{C}_{6}}{{H}_{5}}CONHBr+KBr+{{H}_{2}}O\]                                                      \[\downarrow KOH\]            \[{{K}_{2}}C{{O}_{3}}+{{C}_{6}}{{H}_{5}}N{{H}_{2}}\xleftarrow[2\,KOH]{}{{C}_{6}}{{H}_{5}}NCO+KBr+{{H}_{2}}O\]                  \[{{C}_{6}}{{H}_{5}}N{{H}_{2}}+{{(C{{H}_{3}}CO)}_{2}}O\to C{{H}_{3}}\underset{\begin{smallmatrix}  Acetanilide\text{ } \\  \left( antipyretic \right) \end{smallmatrix}}{\mathop{CONH{{C}_{6}}{{H}_{5}}}}\,+C{{H}_{3}}COOH\]


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