Question

A better reagent to convert primary alcohol to aldehyde is ______.

Options

• Chromic anhydride

• Pyridinium chlorochromate

• Potassium permanganate

• Potassium dichromate

Answer 1

A better reagent to convert primary alcohol to aldehyde is pyridinium chlorochromate.

Explanation:

• PCC is a mild oxidizing agent that selectively oxidizes primary alcohols to aldehydes without further oxidation to carboxylic acids.
• Other reagents like chromic anhydride (CrO₃), potassium permanganate (KMnO₄), and potassium dichromate (K₂Cr₂O₇) are strong oxidizers that usually convert primary alcohols directly to carboxylic acids.