Question

Major product ‘B’ of the following reaction sequence is

• A.
• B.
• C.
• D.

Hint:

The correct answer is (B):
image

Answer 1

The Correct Option is B

To determine the major product 'B' of the given reaction sequence, we need to analyze each step: 

1. The initial compound is an alkene, which is treated with \(Br_2\) in methanol \((\text{CH}_3\text{OH})\). This is a halogenation reaction in which the alkene reacts with bromine to form a vicinal dihalide.
2. Methanol acts as a nucleophile here and attacks the more substituted carbon, leading to the formation of a bromomethoxy compound.
3. The second step involves the treatment of this bromomethoxy compound with hydrogen iodide \((\text{HI})\).
4. \(HI\) is a strong acid and also provides the iodide nucleophile. It reacts with the bromomethoxy compound to replace the methoxy group with an iodide, primarily through an \(S_N2\) mechanism.
5. Thus, the major product 'B' formed will have iodine attached in place of the methoxy group.

Considering these steps, the major product 'B' is an iodo-alkane. Below is the correct option representing the major product:

This represents the structure of 'B' correctly as the iodo-alkane formed after the reaction steps described above.

The correct answer is (B)