Question:
An alcohol X (C\(_5\)H\(_{12}\)O) when reacted with conc. HCl and anhydrous ZnCl\(_2\), produces turbidity instantly. The alcohol X can be prepared from which of the following reactions?
An alcohol X (C\(_5\)H\(_{12}\)O) when reacted with conc. HCl and anhydrous ZnCl\(_2\), produces turbidity instantly. The alcohol X can be prepared from which of the following reactions?
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Tertiary alcohols react instantly with Lucas reagent due to rapid formation of carbocations.
Updated On: Mar 11, 2025
- Reduction of 2-pentanone with NaBH\(_4\)
- Reaction of isopropyl magnesium bromide with ethanol
- Reaction of ethyl magnesium bromide with propanal
- Acid catalyzed hydration of 2-methyl-1-butene
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The Correct Option is D
Solution and Explanation
The Lucas test (reaction with HCl/ZnCl\(_2\)) gives instant turbidity for tertiary alcohols.
The acid-catalyzed hydration of 2-methyl-1-butene forms 2-methyl-2-butanol, a tertiary alcohol, which reacts instantly.
Other options do not form tertiary alcohols.
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