Anhydrous oxidations of primary alcohols can stop the oxidation at the aldehyde stage. A common reagent is Pyridinium chlorochromate (PCC). Draw the expected oxidation product of a primary alcohol with PCC. OH PCC ◄ Select → Draw C Rings H O More Erase Q2Q

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Diol

In chemistry there are so many chemical compounds that have a hydroxyl group but a chemical compound having two hydroxyl groups (-OH) is termed as a diol. It also implies the presence of two alcohols whereas polyols contain two or more than two hydroxyl groups (-OH). Glycol or 1,2-diol is an aliphatic diol that has two alcohol groups on adjacent carbon atoms. In industries, the most commonly used diol is ethylene glycol.