Question

In a set of reactions, ethylbenzene yields a product D. \[ \text{CH}_3\text{C}_6\text{H}_5 \xrightarrow{K\text{MnO}_4} \text{Br}_2 \xrightarrow{\text{FeCl}_3} \text{C}_6\text{H}_5\text{COOH} \xrightarrow{\text{H}_2\text{O}} \text{D} \] Identify D:

• A. A
• B. B
• C. C
• D. D

Hint:

The reaction of ethylbenzene with oxidizing agents such as \( \text{KMnO}_4 \) leads to carboxylic acids, and subsequent reactions can lead to substitution.

Answer 1

The Correct Option is D

- The reaction of ethylbenzene with \( \text{KMnO}_4 \) results in oxidation, forming a carboxylic acid group. - The subsequent reaction with \( \text{FeCl}_3 \) leads to substitution at the benzylic position. - Finally, the hydration of the product gives the final product as \( \text{Br} \), i.e., a bromo-substituted product.

Step 2: Conclusion.
Thus, the correct product is (4) Br.