What is Y in the following reaction sequence?
What is Y in the following reaction sequence?
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The Correct Option is B
Solution and Explanation
1. Reaction of anisole with CH\(_3\)Cl in presence of anhydrous AlCl\(_3\):
This is a Friedel-Crafts alkylation reaction.
The methoxy group (-OCH\(_3\)) is an ortho-para directing group.
The major product (X) will be para-methylanisole (4-methylanisole).
2. Oxidation of 4-methylanisole with KMnO\(_4\)/OH\(^{-}\) followed by H\(_3\)O\(^{+}\):
KMnO\(_4\) in basic medium followed by acidification is a strong oxidizing agent.
It will oxidize the alkyl group attached to the benzene ring to a carboxylic acid group (-COOH).
The methoxy group (-OCH\(_3\)) will remain unaffected.
Y will be 4-methoxybenzoic acid (para-methoxybenzoic acid).
Therefore, Y is 4-methoxybenzoic acid.
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