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Which is the most suitable reagent for the following transformation? CH3–CH=CH–CH2–CH(OH)–CH3 → CH3–CH=CH–CH2–COOH

1. alkaline KMnO4
2. Tollen's reagent
3. I2/NaOH
4. CrO2Cl2/Cs2

Correct answer: alkaline KMnO4

Solution

Alkaline KMnO4 is an oxidizing agent that can oxidize the alcohol group in the compound to a carboxylic acid, facilitating the transformation from the alcohol to the desired carboxylic acid product.

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