JCECE Engineering JCECE Engineering Solved Paper-2002

  • question_answer
    When ethanamide is heated with \[NaOH\] and \[B{{r}_{2}}\] the compound formed is:

    A) \[C{{H}_{3}}CON{{H}_{2}}\]                        

    B) \[{{C}_{2}}{{H}_{5}}NC\]

    C)  \[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]        

    D)  \[C{{H}_{3}}N{{H}_{2}}\]

    Correct Answer: D

    Solution :

    Key Idea: This is Hofmann bromamide reaction. In this reaction amide react with Bra and \[NaOH\] to form amine having one carbon less than parent amide. \[\underset{ethanamide}{\mathop{C{{H}_{3}}CON{{H}_{2}}}}\,+4NaOH+B{{r}_{2}}\xrightarrow{{}}\]                 \[C{{H}_{3}}N{{H}_{2}}+{{H}_{2}}O+4NaBr+C{{O}_{2}}\] \[\therefore \]Methyl amine is formed during reaction.


You need to login to perform this action.
You will be redirected in 3 sec spinner