RAJASTHAN ­ PET Rajasthan PET Solved Paper-2004

  • question_answer
    Which is suitable for the test of primary amine?

    A)  Chlorine

    B)  Acetyl chloride

    C)  Chloroform and alkali

    D)  Alkyl chloride

    Correct Answer: C

    Solution :

     Primary amine reacts with chloroform and alkali to give bad smelling isocyanide compound. This reaction is called carbylamines reaction. \[\underset{\begin{smallmatrix}  methyl \\  amine \end{smallmatrix}}{\mathop{C{{H}_{3}}N{{H}_{2}}}}\,+CHC{{l}_{3}}+3KOH\xrightarrow[{}]{{}}\]      \[\underset{\begin{smallmatrix}  methyl \\  isocyanide \end{smallmatrix}}{\mathop{C{{H}_{3}}NC}}\,+KCl+3{{H}_{2}}O\]


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