JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Properties

  • question_answer
    Identify the reactant X and the product Y                 \[C{{H}_{3}}-CO-C{{H}_{3}}+X\to \underset{{}}{\mathop{{{(C{{H}_{3}})}_{3}}}}\,C-OMg-Cl\]                                                                                                                                                 \[Y+Mg\ (OH)\ Cl\] [Kerala PMT 2003]

    A)                 \[X=MgC{{l}_{2}};\ \ Y=C{{H}_{3}}CH=C{{H}_{2}}\]

    B)                 \[X=C{{H}_{3}}MgCl;\ Y={{C}_{2}}{{H}_{5}}COC{{H}_{3}}\]

    C)                 \[X=C{{H}_{3}}MgCl;\ Y={{(C{{H}_{3}})}_{3}}\ C-OH\]

    D)                 \[X={{C}_{2}}{{H}_{5}}MgCl;\,Y={{(C{{H}_{3}})}_{3}}C-OH\]

    Correct Answer: C

    Solution :

               \[C{{H}_{3}}COC{{H}_{3}}+\underset{\text{(X)}}{\mathop{C{{H}_{3}}MgCl}}\,\to {{(C{{H}_{3}})}_{3}}C-OMgCl\] \[\xrightarrow{\text{hydrolysis}}{{(C{{H}_{3}})}_{3}}\underset{(Y)}{\mathop{C-OH}}\,+Mg(OH)Cl\]


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