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(C) The reaction involves the oxidation of alkylbenzenes using strong oxidizing agents like $KMnO_4$ in an acidic medium.Any alkyl group attached to t

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benzene$-1,4-$dicarboxylic acid (terephthalic acid)

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(C) The reaction involves the oxidation of alkylbenzenes using strong oxidizing agents like $KMnO_4$ in an acidic medium.Any alkyl group attached to the benzene ring,provided it has at least one benzylic hydrogen atom,is oxidized to a carboxylic acid group $(-COOH)$ regardless of the length of the alkyl chain.In the given reactant,$1$-ethyl-$4$-methylbenzene,both the methyl group $(-CH_3)$ and the ethyl group $(-CH_2CH_3)$ have benzylic hydrogen atoms.Therefore,both alkyl groups are oxidized to carboxylic acid groups,resulting in the formation of benzene-$1,4$-dicarboxylic acid,also known as terephthalic acid.The correct option is $C$.

What is the major product of the following reaction?
$1$-ethyl-$4$-methylbenzene $\xrightarrow{KMnO_4 + H^+}$ ?

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What is the major product of the following reaction?$1$-ethyl-$4$-methylbenzene $\xrightarrow{KMnO_4 + H^+}$ ?