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JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Properties

  • question_answer
    Cinnamic acid is formed when \[{{C}_{6}}{{H}_{5}}-CHO\] condenses with \[{{(C{{H}_{3}}CO)}_{2}}O\] in presence of     [Orissa JEE 2003]

    A)                 Conc. \[{{H}_{2}}S{{O}_{4}}\]     

    B)                 Sodium acetate

    C)                 Sodium metal   

    D)                 Anhydrous \[ZnC{{l}_{2}}\]

    Correct Answer: B

    Solution :

    \[{{C}_{6}}{{H}_{5}}CHO+{{(C{{H}_{3}}CO)}_{2}}O\xrightarrow{C{{H}_{3}}C{{O}_{2}}Na}\]\[{{C}_{6}}{{H}_{5}}CH=CHC{{O}_{2}}H\] It is Perkin?s reaction.


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