Question:
Identify the major product from the following reaction sequence:
Identify the major product from the following reaction sequence:
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Carboxylic acid is a meta-directing group in electrophilic aromatic substitution reactions.
Updated On: Jun 26, 2026
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The Correct Option is A
Solution and Explanation
Step 1: Oxidation of methyl group.
KMnO\(_4\)/KOH oxidizes the methyl group on benzene to carboxylic acid → forms benzoic acid.
Step 2: Electrophilic substitution.
The carboxylic acid group is a meta-directing group for electrophilic substitution.
Step 3: Bromination.
Br\(_2\)/FeBr\(_3\) adds Br to the meta position relative to the COOH group.
Step 4: Identify major product.
Meta-bromo substitution gives Br-C\(_6\)H\(_4\)-COOH as the major product.
Step 5: Conclusion.
\[ \boxed{\text{Br-C}_6\text{H}_4\text{-COOH}} \]
KMnO\(_4\)/KOH oxidizes the methyl group on benzene to carboxylic acid → forms benzoic acid.
Step 2: Electrophilic substitution.
The carboxylic acid group is a meta-directing group for electrophilic substitution.
Step 3: Bromination.
Br\(_2\)/FeBr\(_3\) adds Br to the meta position relative to the COOH group.
Step 4: Identify major product.
Meta-bromo substitution gives Br-C\(_6\)H\(_4\)-COOH as the major product.
Step 5: Conclusion.
\[ \boxed{\text{Br-C}_6\text{H}_4\text{-COOH}} \]
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