Which reagent is used to reduce a carboxylic group into alcohol?
Correct answer: D. LiAlH4
- A. H2/Ni
- B. H2/Pt
- C. NaBH4
- D. LiAlH4
Explanation
LiAlH4, lithium aluminum hydride, is a powerful reducing agent commonly used to reduce a carboxylic group (-COOH) into alcohol (-CH2OH). This reduction reaction involves the addition of hydride ions (H-) to the carbonyl carbon of the carboxylic group, followed by protonation to form the corresponding alcohol.
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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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