Alcohols and Ethers - Result Question 4
6. The major product of the following reaction is
(2019 Main, 8 April I)
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 6. (b)
Solution:
- Ethers are least reactive functional groups. The cleavage of $C-O$ bond in ethers take place under drastic conditions with excess of $H X$.
The major product obtained in the reaction is as follows :
As conc. HBr is in excess. So, reaction will take place at both the substituents.
Mechanism
Step 1: Protonation of ether to form oxonium ion.
Step 2: Attack of nucleophile at the protonated ether.
Step 3: As $HBr$ is in excess, so, reaction will also take place at alkene.
BETA
