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NEET AIPMT SOLVED PAPER 2001

  • question_answer
                      Intermediates formed during reaction of \[\underset{\begin{smallmatrix}  |\,\,| \\  O \end{smallmatrix}}{\mathop{RCN{{H}_{2}}}}\,\] with Br2 and KOH are:                  

    A)                 RCONHBr and RNCO                                      

    B)                 RNHCOBr and RNCO

    C)                 RNHBr and KCONHBr                                     

    D)                 \[RCONB{{r}_{2}}\]

    Correct Answer: A

    Solution :

                    The reaction                 \[RCON{{H}_{2}}+B{{r}_{2}}+KOH\xrightarrow[{}]{{}}RN{{H}_{2}}\]                 is known as Hofmann-bromamide reaction. The mechanism of this reaction is given as:


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