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Benzaldehyde is treated with acetaldehyd...

Benzaldehyde is treated with acetaldehyde in presence of dilute alkali. What happens ?

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When benzaldehyde reacts with acetaldehyde, first unsatble `beta`-hydroxy aldehyde is formed which loses a molecule of water to form cinnamaldehyde. `CH_(6)H_(5)CHO + CH_(3)CHO underset(NaOH)overset("dil")rarr C_(6)H_(5)-CH(OH)CH_(2)CHO underset(-H_(2)O)overset("Heat")rarr C_(6)H_(5)-CH=CHCHO`
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Knowledge Check

  • Acetaldehyde is reduced with hydrogen in the presence of Nickel. What is the compound formed.

    A
    Ethanol
    B
    n-propanol
    C
    Methanol
    D
    Isopropanol

  • Acetaldehyde is required with hydrogen in the presence of nickel . What is the compound formed ?

    A
    Ethanol
    B
    n-propanol
    C
    Methanol
    D
    Isopropanol

  • Reduction of acetaldehyde in presence of LiAlH_(4) gives

    A
    Acetic acid
    B
    Ethane
    C
    Methane
    D
    Ethanol

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    What product is formed when benzene is treated with chlorine in presence of U.V. light at 500 K ?

    (A) Benzaldehyde is more reactive than acetaldehyde towards nucleophilic attack. (R) The combined effect of -I and +R effects of phenyl group decreases the electron density on the carbon atom of C=O group in benzaldehyde.

    Acetaldehyde is reduced with hydrogen in the presence of nickel. The compound formed is

    Acetaldehyde when treated with dilute NaOH gives

    When acetaldehyde is treated with LiAlH_(2) , the product formed as

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