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NEET Chemistry Aldehydes, Ketones Question Bank Self Evaluation Test - Aldehydes, Ketons and Carboxylic Acids

  • question_answer
    In the mechanism of Hoffinann reaction, which intermediate rearranges to alkyl isocyanate?

    A) Bromamide      

    B) Nitrene

    C) Nitroso                         

    D) Amide

    Correct Answer: B

    Solution :

    [b] \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-N{{H}_{2}}\xrightarrow{B{{r}_{2}}/KOH}\left[ \underset{Acy\operatorname{lnitrene}}{\mathop{R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\overset{..}{\mathop{N:}}\,}}\, \right]\] \[\xrightarrow{\operatorname{Re}arrangment}\underset{Alkyl\,isocynate}{\mathop{R-N=C=O}}\,\]


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