NEET 2020 · ChemistryPrevious Year Question
Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give
Answer: (A) (A) tert-Butyl alcohol. \textbf{Answer:} (A) tert-Butyl alcohol \textbf{Solution:} A Grignard reagent adds to the carbonyl carbon of a ketone; acetone (a ketone) gives a alcohol.
- A.(A) tert-Butyl alcohol✓
- B.(B) Isobutyl alcohol
- C.(C) Isopropyl alcohol
- D.(D) sec-Butyl alcohol
Correct Answer
(A) (A) tert-Butyl alcohol
Solution & Explanation
\textbf{Answer:} (A) tert-Butyl alcohol \textbf{Solution:} A Grignard reagent adds to the carbonyl carbon of a ketone; acetone (a ketone) gives a alcohol. The methyl group adds to the carbonyl carbon, then hydrolysis gives the alcohol: The product is 2-methylpropan-2-ol, i.e. tert-butyl alcohol (a tertiary alcohol).
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