Question

${CH}_3{CH}_{2}OH$ can be converted into ${CH}_{3}CHO$ by:

• A. catalytic hydrogenation
• B. treatment with ${LiAlH}_4$
• C. treatment with pyridinium chlorochromate
• D. treatment with ${KMnO}_4$

Answer 1

The correct option is C treatment with pyridinium chlorochromate

${CH}_3{CH}_{2}OH$ can be converted into ${CH}_{3}CHO$ by treatment with pyridinium chlorochromate.
Primary alcohols on oxidation gives aldehydes. Further oxidation of aldehydes in the presence of strong oxidizing agent gives carboxylic acids.
To stop the oxidation at aldehyde stage and to prevent further oxidation to carboxylic acid, a mild oxidizing agent such as pyridinium chlorochromate or pyridinium dichromate is used.