MCQ
Which of the following carbocation will undergo rearrangement ?
  • A


  • C
    $\begin{matrix}
       C{{H}_{3}}-CH-{}^{\oplus }C=O  \\
       |\,\,\,\,\,\,\,\,\,\,\,\,  \\
       C{{H}_{3}}\,\,\,\,\,\,\,  \\
    \end{matrix}$
  • D
    $\begin{matrix}
       C{{H}_{3}}-NH-{}^{\oplus }CH-CH-C{{H}_{3}}  \\
       \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|  \\
       \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}  \\
    \end{matrix}$

Answer

Correct option: B.

b
$(b)$ For each carbocation rearrangement there must be some driving force. Carbocation rearranges only when more stable carbocation is formed.

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