RAJASTHAN ­ PET Rajasthan PET Solved Paper-2004

  • question_answer
    \[Ar-CON{{H}_{2}}\xrightarrow[{}]{B{{r}_{2}}+KOH}Ar-N{{H}_{2}}\] This reaction is

    A)  Hofmann mustard oil reaction

    B)  Hofmann bromamide reaction

    C)  Hofmann martius rearrangement

    D)  Hofmann carbylamme reaction

    Correct Answer: B

    Solution :

     \[\underset{aromatic\text{ }amide}{\mathop{Ar-CON{{H}_{2}}}}\,+B{{r}_{2}}+4KOH\xrightarrow[{}]{{}}\underset{\begin{smallmatrix}  aromatic \\  amine \end{smallmatrix}}{\mathop{Ar-N{{H}_{2}}}}\,\] \[+{{K}_{2}}C{{O}_{3}}+2KBr+2{{H}_{2}}O\] This reaction is called Hofmann bromamide reaction.


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