Question

Phenyl magnesium bromide reacting with t-butyl alcohol gives:

• A. $Ph-OH$
• B. $Ph-H$
• C.
• D.

Answer 1

The correct option is B $Ph-H$

When phenyl magnesium bromide reacts with t-butyl alcohol, it produces benzene. This is because of basic nature of phenyl carbanion. This will act as strong base and abstract the active hydrogen of alcohol that is -H of OH group. Thus, Grignard reagent reacts with compound containing active hydrogen to form hydrocarbon.

When phenyl magnesium bromide reacts with tertiary butyl alcohol, benzene is obtained. The reaction is as follows:


Hence, the correct answer is option (b).