The alcohol shown is oxidised with pyridinium chlorochromate (PCC) in dichloromethane. Which structure is the product?

AStructure A
BStructure B
CStructure C
DStructure D

Answer: B

The alcohol is butan-1-ol, a primary alcohol. PCC in dichloromethane is a mild reagent that stops at the aldehyde stage, so the product is butanal. Butanoic acid would need an aqueous strong oxidant such as acidified

KMnO X_{4}

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