Acetaldehyde reacts with a Grignard reagent (CH₃MgBr)followed by hydrolysis to form:
Correct answer: B. Propan-2-ol
- A. Propan-1-ol
- B. Propan-2-ol
- C. Ethanol
- D. 2-Methylpropan-2-ol
Explanation
The nucleophilic methyl group from the Grignard reagent adds to the carbonyl carbon of acetaldehyde. The subsequent hydrolysis of the intermediate alkoxide produces a secondary alcohol, which in this case is propan-2-ol.
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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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