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What is cross aldol condensation. Give a...

What is cross aldol condensation. Give an example.

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When aldol consensation is carried out between two different aldehydes or ketones it is called crossed aldol condensation.
Example:
`underset(CH_(3)CH_(2)CHO)underset(+)(CH_(3)CHO)underset((2)Delta)overset((1)NaOH)toCH_(3)-CH=underset("2-Methylbut-2-enal")underset(CH_(3))underset(|)(C)-CHO+CH_(3)CH_(2)underset("Pent-2-enal")(CH=CHCHO)`
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SUBHASH PUBLICATION-ALDEHYDES, KETONES AND CARBOXYLIC ACIDS-QUESTIONS
  1. What is the action of dil. NaOH on ethanal (acetaldehyde)? Name the re...

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  2. Write the name of the reaction.

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  3. What is cross aldol condensation. Give an example.

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  4. How does benzaldehyde reacts with acetophenone in presence of dilute a...

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  5. Ethanal(CH3CHO) undergoes aldol condensation reaction.Give reason.

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  6. Exaplain Cannozzaro reaction with an example.

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  7. Identify A and B in the following reaction.

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  8. Acetaldehyde does not undergo Cannizzaro reaction. Why ?

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  9. Formaldehyde undergoes Cannizzaro's reaction. Give reason.

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  10. Given two uses of formaldehyde.

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  11. How are carboxylic acids prepared form Grignard regents ?

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  12. What are Y and Z in the following reactions ?

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  13. Complete the following reaction.

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  14. Complete the following reaction.

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  15. How are carboxylic acids prepared from nitriles ?

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  16. Carboxylic acids are more acidic than phenols. Give reason.

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  17. Explain the effect of electron withdrawing groups. [EWG] on the acidi...

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  18. What is the effect of electron withdrawing group on the acidity of car...

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  19. Explain the effect of electron donating group (EDG) on the acidity of ...

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  20. Among formic acid and acetic acid, which is more acidic ? Give reason...

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