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The product formed in the aldol condensa...

The product formed in the aldol condensation of acetaldehyde is

A

`CH_(3)CH_(2)CH(OH)CHO`

B

`CH_(3)CH(OH)CH_(2)CHO`

C

`CH_(3)CH(OH)COCH_(3)`

D

`CH_(3)CH_(2)CH_(2)CHO`

Text Solution

Verified by Experts

The correct Answer is:
B
Two molecules of acetaldehyde combine with each other in presence of dil. NaOH to fomr 3-hydroxybutanal.
`CH_(3)CHO+HCH_(2)CHO overset(OH^(-))to underset("3-hydroxybutanal(aldol)")overset(OH) overset(|) (CH_(3)-CHCH_(2)-CHO)`
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Knowledge Check

  • The product formed in aldol condensation is

    A
    a `beta -"hydroxy"` acid
    B
    an `alpha-"hydroxy"` aldehyde or ketone
    C
    an `alpha, beta`-unsaturated ester
    D
    a `beta-"hydroxy"` aldehyde or a `beta`-hydroxy ketone

  • In aldol condensation

    A
    `alpha`- hydrogen attacks on carbonyl carbon
    B
    `alpha-` carbon attacks on carbonyl carbon
    C
    `beta-`carbon attacks onn carbonyl carbon
    D
    `beta-`hydrogen attacks on carbonyl carbon

  • The product formed in Aldol condensation is

    A
    an alpha, beta-unsaturated ester
    B
    a beta hydroxy acid
    C
    a beta hydroxyaldehyde or ketone
    D
    an alpha hydroxy aldehyde or ketone
    • MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ALDEHYDES, KETONES AND CARBOXYLIC ACIDS-EXERCISE 2
    1. Which of the following compounds would be the main product of an aldo...

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    2. An organic compound of molecular formula C(3)H(5)O did not give a silv...

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    3. The product formed in the aldol condensation of acetaldehyde is

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    4. Acetone on addition to methyl magnesium bromide froms a complex, which...

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    5. Which of the following is an example of aldol condensation?

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    6. The product fomred in the reaction

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    7. An organic compound X gives a red precipitate on heating with Fehling...

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    8. which of the following converts carbonyl compounds into hydrocarbons ?

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    9. The end prduct in the Cannizaro's reaction of benzaldehyde is

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    10. How will you convert butan -2-one to propanoic acid?

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    11. The acetophenone can be converted to eehtylbezene by reaction with LiA...

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    12. Arrange the following compounds in the increasing order of their boili...

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    13. The conversion of acetophenone to acetanilide is best accompanied by u...

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    14. Bezaldehyde gives a positive test with

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    15. Acetaldehyde form a white crystalline precipitate mixing with a soluti...

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    16. The product formed during Hell-Volhard-Zelinsky reaction is

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    17. Which gives lactic acid on hydrolysis after reacting with HCN?

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    18. Benzaldehyde condense with acetaldehyde to produce

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    19. The correct order for the acidic strength of thhe following compounds ...

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    20. The reagent which does not give acid chloride on treating with a carbo...

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