JEE Main & Advanced Chemistry Alcohols, Phenols and Ethers / एल्कोहॉल, फीनॉल तथा ईथर Question Bank Preparation of alcohol Phenol and Ethers

  • question_answer
    Propene, \[C{{H}_{3}}-CH=C{{H}_{2}}\] can be converted to 1-propanol by oxidation. Which set of reagents among the following is ideal to effect the conversion             [CBSE PMT 1991]

    A)                 Alkaline \[KMn{{O}_{4}}\]

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

    C)                 \[{{O}_{3}}/Zn\] dust

    D)                 \[Os{{O}_{4}}/C{{H}_{4}},C{{l}_{2}}\]

    Correct Answer: B

    Solution :

               Hydroboration oxidation (Industrial preparation of alcohol) \[3C{{H}_{3}}CH=C{{H}_{2}}+\frac{1}{2}{{B}_{2}}{{H}_{6}}\underset{\text{ether}}{\mathop{\xrightarrow{\text{Dry}}}}\,{{(C{{H}_{3}}C{{H}_{2}}C{{H}_{3}})}_{3}}B\]                                 \[{{(C{{H}_{3}}C{{H}_{2}}C{{H}_{3}})}_{3}}B\xrightarrow{{{H}_{2}}{{O}_{2}}}3C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}-OH\]


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