Question

Which one of the following compounds does not give a tertiary alcohol on reaction with excess of $C{H}_{3}MgBr$ followed by hydrolysis?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B


Compound (c) does not give a tertiary alcohol product with excess grignard reaction. $C{H}_3^{-}$ from grignard reagent act as a base and accept the acidic hydrogen from alkyne on reaction with (c).

Hence, option (c) is correct.