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Question

Question: \(CH_{3}CH_{2}OH\) can be converted into \(CH_{3}CHO\) by...

CH3CH2OHCH_{3}CH_{2}OH can be converted into CH3CHOCH_{3}CHO by

A

Catalytic hydrogenation

B

Treatment with LiAlH4LiAlH_{4}

C

Treatment with pyridinium chlorochromate

D

Treatment with KMnO4KMnO_{4}

Answer

Treatment with pyridinium chlorochromate

Explanation

Solution

Pyridinium chorochromate (PCC), a complex of chromium trioxide with pyridine and HCl gives good yield of aldehydes and prevents further oxidation to carboxylic acids

CH3CH2OHPCCCH3CHOCH_{3}CH_{2}OH\overset{\quad PCC\quad}{\rightarrow}CH_{3}CHO