JIPMER Jipmer Medical Solved Paper-1998

  • question_answer
    Which of the following is the best reagent to convert propene into propanol-1?

    A)  Osmium tetroxide

    B)  Alkaline \[KMn{{O}_{4}}\]

    C)  \[{{B}_{2}}{{H}_{6}}\] and alkaline \[{{H}_{2}}{{O}_{2}}\]

    D)  Ozone and zinc dust

    Correct Answer: C

    Solution :

    \[{{B}_{2}}{{H}_{6}}\] and alkaline\[{{H}_{2}}{{O}_{2}}\]can convert propene into propanol-1. All other reagents give propanol-2. \[6C{{H}_{3}}--C\equiv \equiv C{{H}_{2}}+{{B}_{2}}{{H}_{6}}\xrightarrow{{}}\]\[2{{(C{{H}_{3}}--C{{H}_{2}}--C{{H}_{2}})}_{3}}B\xrightarrow{{{H}_{2}}{{O}_{2}}/NaOH}\] \[\underset{\text{Propanol-1}}{\mathop{6C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH}}\,+2{{H}_{3}}B{{O}_{3}}\]


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