What happens when acetone undergoes aldol reaction? Write balanced reaction
Answers
Answer:The Aldol Reaction. ... In the presence of acid or base catalysts the aldol reaction is reversible, and the beta-hydroxy carbonyl products may revert to the initial aldehyde or ketone reactants. In the absence of such catalysts these aldol products are perfectly stable and isolable compounds.
Explanation:
Answer:
Aldol reaction is an important organic reaction of aldehydes and ketones. This reaction is shown by aldehydes and Ketones having alpha-hydrogen atom in the compound. Such a-hydrogen atom containing aldehydes and ketones will undergo self condensation in presence dilute alkalies like dil.NaOH (dilute Sodium hydroxide), dil.Ba(OH)2(dilute Barium hydroxide) forming alpha, β-hydroxyaldehyde (an aldol) or β-hydroxyketone (a Ketol) .The Aldol or the Ketol thus formed in the reaction upon heating eliminates a molecule of water (i.e. it undergoes dehydration) forming alpha, β-unsaturated Aldehydes or Ketones respectively. This reaction now is called Aldol condensation reaction.
Example: 1 of Aldol condensation reaction involving an aldehyde.
When acetaldehyde is treated with dil.NaOH it undergoes self condensation as it contains alpha-hydrogen atom in its compound forming β-hydroxyaldehyde (an aldol) namely 3-Hydroxy butanal. This compound upon further heating will eliminate a molecule of water forming aldol condensation product namely Crotonaldehyde Or But-2-en-al.
Example: 2 of Aldol condensation reaction involving a ketone.
When acetone-the ketone is treated with dil.Ba(OH)2 it undergoes self condensation as it contains a-hydrogen atom in its compound forming β-hydroxyketone (a ketol) namely 4-Hydroxy-4-methyl Pentan-2-one. This compound upon further heating will eliminate a molecule of water forming aldol condensation product namely 4-Methyl pent-3-en-2-one.
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