During aldol condensation - OH group appears at:
Correct answer: B. β-C
- A. ∝-C
- B. β-C
- C. γ-C
- D. δ-C
Explanation
During aldol condensation, the -OH group appears at the beta-carbon position. Let me explain what that means.In aldol condensation, two molecules of carbonyl compounds, such as aldehydes or ketones, come together and undergo a reaction. One molecule acts as the nucleophile and donates an enolate ion, which is a carbon-carbon double bond with a negative charge. The other molecule acts as the electrophile and accepts the enolate ion.Now, the beta-carbon refers to the carbon atom adjacent to the carbonyl carbon. When the enolate ion attacks the electrophile, it forms a new carbon-carbon bond. As a result, the -OH group is attached to the beta-carbon, which is the carbon atom next to the carbonyl carbon.This addition of the -OH group at the beta-carbon is a key characteristic of aldol condensation reactions. It's pretty cool how these reactions can lead to the formation of new carbon-carbon bonds and the introduction of functional groups like -OH.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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