Question

Which of the following benzylic alcohol is tertiary alcohol?

• A. Phenyl methanol
• B. 1- phenyl ethanol
• C. 2- phenyl propan-2-ol
• D. 1- phenyl propan-2-ol

Hint:

For tertiary alcohols, the carbon bearing the hydroxyl group is bonded to three other carbon atoms.

Answer 1

The Correct Option is C

Step 1: Understanding tertiary alcohols.
A tertiary alcohol has a hydroxyl group (-OH) attached to a carbon that is bonded to three other carbon atoms.

Step 2: Analyzing the options.
(A) Phenyl methanol: This is a primary alcohol, as the hydroxyl group is attached to a carbon bonded to one other carbon.
(B) 1- phenyl ethanol: This is a secondary alcohol, as the hydroxyl group is attached to a carbon bonded to two other carbon atoms.
(C) 2- phenyl propan-2-ol: Correct — This is a tertiary alcohol, as the hydroxyl group is attached to a carbon bonded to three other carbon atoms.
(D) 1- phenyl propan-2-ol: This is a secondary alcohol, as the hydroxyl group is attached to a carbon bonded to two other carbon atoms.

Step 3: Conclusion.
The correct answer is (C) 2- phenyl propan-2-ol, as it is a tertiary alcohol.