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MGIMS WARDHA MGIMS WARDHA Solved Paper-2003

  • question_answer
    The reaction, \[C{{H}_{3}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-OC{{H}_{3}}+{{C}_{2}}{{H}_{5}}OH\xrightarrow{{{H}^{+}}or\,O{{H}^{-}}}\] \[C{{H}_{3}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}+C{{H}_{3}}OH\]is called:

    A)  Perkin's reaction

    B)  Claisen Schmidt reaction

    C)  Esterification

    D)  Trans-esterification

    Correct Answer: D

    Solution :

                     The substitution of alkoxy group of ester by an alcohol, is called trans-esterification. It occurs in presence of either an acid or base. \[C{{H}_{3}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-OC{{H}_{3}}+{{C}_{2}}{{H}_{5}}OH\xrightarrow[{}]{{{H}^{+}}or\,O{{H}^{-}}}\]         \[C{{H}_{3}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}+C{{H}_{3}}OH\]


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