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JEE Main & Advanced Chemistry Carboxylic Acids Question Bank Preparation of Carboxylic Acids and Their Derivatives

  • question_answer
    Tischenko reaction yields ester in the presence of catalyst which is

    A)                 \[LiAl{{H}_{4}}\]               

    B)                 N-bromosuccinamide

    C)                 \[Al{{(O{{C}_{2}}{{H}_{5}})}_{3}}\]          

    D)                 \[Zn-Hg/HCl\]

    Correct Answer: C

    Solution :

               \[2C{{H}_{3}}CHO\xrightarrow{Al{{(O{{C}_{2}}{{H}_{5}})}_{3}}}C{{H}_{3}}C{{H}_{2}}OH\]                                                    \[+C{{H}_{3}}COOH\]\[\to \underset{\text{Ethylacetate}}{\mathop{C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}}}\,+{{H}_{2}}O\]


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