Question

The compound which gives the most stable carbocation on dehydration is:

• A. \(\text{CH}_3\text{CH(CH}_3)\text{CH}_2\text{OH}\)
• B. \((\text{CH}_3)_3\text{COH}\)
• C. \(\text{CH}_2=\text{CHCH}_2\text{CH}_2\text{OH}\)
• D. \(\text{CH}_3\text{CHOHCH}_2\text{CH}_3\)

Hint:

More alkyl groups increase carbocation stability by hyperconjugation.

Answer 1

The Correct Option is B

Step 1: Carbocation stability order:
\[ 3^\circ > 2^\circ > 1^\circ \]

Step 2: tert-Butyl alcohol forms a tertiary carbocation.