Which of the following does NOT give benzoic acid on oxidation with hot alkaline $KMnO X_{4}$ followed by acidification?

Atert-butylbenzene
Btoluene
Cethylbenzene
Disopropylbenzene (cumene)

Answer: A

Side-chain oxidation requires at least one benzylic hydrogen. Toluene, ethylbenzene and cumene each have a benzylic C-H and are oxidised to benzoic acid. tert-Butylbenzene has no benzylic hydrogen and is unaffected.

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Which of the following does NOT give benzoic acid on oxidation with hot alkaline KMnOX4​ followed by acidification?

Answer: A

More questions on Ozonolysis and oxidative cleavage

Which of the following does NOT give benzoic acid on oxidation with hot alkaline $KMnO X_{4}$ followed by acidification?