Crotonaldehyde is obtained when:

aldol of ethanal undergoes dehydration

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aldol of propanone undergoes dehydration

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ethanal and methanal take part in crossed aldol condensation

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none of the above

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Solution

The correct option is A aldol of ethanal undergoes dehydration
When acetaldehyde, which is the aldol of ethanal, undergoes aldol condensation, crotonaldehyde is obtained.

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Similar questions

Q. Ethanal

(C H_{3} C H O)

undergoes aldol condensation reaction. Give reason.

Q. Explain aldol condensation reactions of ethanal & propanone.

Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither ? Write the structures of the expected products of aldol condensation or Cannizzaro reaction ?

Methanal

2-methyl pentanal

Benzaldehyde

Benzophenone

Cyclohexanone

l - phenyl propanone

Phenyl acetaldehyde

Butan - 1 - ol

2, 2 - dimethyl butanal

Q. Which of the following is not a final product obtained by cross aldol condensation of ethanal and propanal?

Q. What is the product formed when cyclohexanone undergoes aldol condensation?

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Crotonaldehyde is obtained when:

The correct option is A aldol of ethanal undergoes dehydrationWhen acetaldehyde, which is the aldol of ethanal, undergoes aldol condensation, crotonaldehyde is obtained.

The correct option is A aldol of ethanal undergoes dehydration
When acetaldehyde, which is the aldol of ethanal, undergoes aldol condensation, crotonaldehyde is obtained.