The carbon of the carbonyl group is:
Correct answer: B. Metal hydride
- A. Catalytic reduction
- B. Metal hydride
- C. Clemmensen method
- D. Lindlar's catalyst
Explanation
The carbon of the carbonyl group is reduced by metal hydrides. Metal hydrides, such as lithium aluminum hydride (LiAlH4) or sodium borohydride (NaBH4), are powerful reducing agents capable of reducing carbonyl compounds (aldehydes and ketones) to their corresponding alcohols. Therefore, option b is correct.
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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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