Which of the following reactions may be assoclated with aldehyde and ketone ?
Correct answer: D. all of the above
- A. nucleophile addition
- B. polymerization
- C. oxidation
- D. all of the above
Explanation
Aldehydes and ketones can undergo nucleophilic addition at the carbonyl group, and some carbonyl compounds can polymerize; oxidation is also associated with carbonyl chemistry, especially for aldehydes and under suitable conditions for ketones. Thus all listed reaction types may be associated with this class. The common mistake is choosing only nucleophilic addition because it is the characteristic reaction of the carbonyl group.
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About Reactivity of Aldehydes and Ketones
The polar carbonyl group makes aldehydes and ketones undergo nucleophilic addition, reduction and condensation reactions. Aldehydes are generally more reactive and oxidise readily to carboxylic acids, whereas ketones resist mild oxidation; reactions with hydrogen cyanide, sodium bisulfite and 2,4-DNP help identify their behaviour.
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