CET Karnataka Medical CET - Karnataka Medical Solved Paper-2014

  • question_answer
    Carbocation as an intermediate is likely to be formed in the reaction:

    A)  \[\text{Propene}+C{{l}_{2}}\xrightarrow{hv}2-chloropropane\]

    B)  \[Acetone+HCN\xrightarrow{-OH}\] \[acetonecyanohydrin\]

    C)  \[Ethyl\,bromide+Aq.\,KOH\xrightarrow{\Delta }\] \[ethyl\,alcohol\]

    D)  \[Hexane\xrightarrow{Anhy.AlC{{l}_{3}}/HCl}\]\[\text{2-methylpentane}\]

    Correct Answer: D

    Solution :

    : \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] \[\xrightarrow[Isomeristion]{Anhy.\,AlC{{l}_{3}}/HCl}\underset{2-\text{Methylpentane}}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,HC{{H}_{3}}}}\,\] This involves the formation of carbocation as an intermediate.


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