Question

The major product of the above reaction is:

• A. a hemiacetal
• B. an acetal
• C. an ether
• D. an ester

Answer 1

The correct option is B an acetal

Major product of the above reaction is an acetal as shown in the above reaction.

In the first step, the $\pi$ bond will abstract the proton which leads to formation of a carbocation intermediate.

In the second step, the nucleophile $RC{H}_2{O}^{-}$ will attack carbocation forming an acetal.
Option B is the correct answer.