Major product ‘B’ of the following reaction sequence is
Major product ‘B’ of the following reaction sequence is
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The correct answer is (B):
image
The Correct Option is B
Solution and Explanation
To determine the major product 'B' of the given reaction sequence, we need to analyze each step:
- 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.
- Methanol acts as a nucleophile here and attacks the more substituted carbon, leading to the formation of a bromomethoxy compound.
- The second step involves the treatment of this bromomethoxy compound with hydrogen iodide \((\text{HI})\).
- \(HI\) 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.
- 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)
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Concepts Used:
Aldehydes, Ketones and Carboxylic Acids - Chemical Reactions
Chemical Reactions of Aldehydes and Ketones:
- Cross aldol condensation
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