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WB JEE Medical WB JEE Medical Solved Paper-2008

  • question_answer
    Which of the following will produce only one product on reduction with\[\text{LiAl}{{\text{H}}_{\text{4}}}\]?

    A)  \[C{{H}_{3}}OCOC{{H}_{2}}C{{H}_{3}}\]

    B)  \[~C{{H}_{3}}C{{H}_{2}}OCOC{{H}_{2}}C{{H}_{3}}\]

    C)  \[C{{H}_{3}}C{{H}_{2}}OCOC{{H}_{3}}\]

    D)  \[C{{H}_{3}}C{{H}_{2}}OCOC{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\]

    Correct Answer: A

    Solution :

                     Only ethyl acetate undergoes reduction with LiAlH4 to give only ethyl alcohol, other esters given in option on reduction gives a mixture of alcohols. \[C{{H}_{3}}COOC{{H}_{2}}C{{H}_{3}}+2{{H}_{2}}\xrightarrow[ether]{LiAl{{H}_{4}}}2C{{H}_{3}}C{{H}_{2}}OH\]


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