Aldol condensation is possible because
Correct answer: B. alpha hydrogens in carbonyls are acidic
- A. aldehydes are good oxidizing agents
- B. alpha hydrogens in carbonyls are acidic
- C. aldehydes are good reducing agent
- D. aldehydes can easily dehydrate
Explanation
It is possible because aldehydes and ketones with alpha hydrogens are acidic and can be deprotonated by a base to form nucleophiles. These nucleophiles can attack the carbonyl carbon of another aldehyde or ketone molecule, forming a new carbon-carbon bond. The mechanism is shown below.
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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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