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Multiple Choice
In the context of organic chemistry reactions, which reagent is commonly used to oxidize primary alcohols to aldehydes?
A
Potassium permanganate (KMnO4)
B
Lithium aluminum hydride (LiAlH4)
C
Pyridinium chlorochromate (PCC)
D
Sodium borohydride (NaBH4)
Verified step by step guidance
1
Understand the nature of primary alcohols: Primary alcohols have the hydroxyl group (-OH) attached to a carbon atom that is bonded to only one other carbon atom.
Recognize the goal of the reaction: The task is to oxidize primary alcohols to aldehydes. This involves removing hydrogen atoms and forming a carbonyl group (C=O) at the site of the hydroxyl group.
Identify the role of oxidizing agents: Oxidizing agents facilitate the removal of hydrogen atoms from the alcohol, allowing the formation of the aldehyde. Different oxidizing agents have varying strengths and selectivities.
Evaluate the given reagents: Potassium permanganate (KMnO4) is a strong oxidizing agent that typically oxidizes alcohols to carboxylic acids, not aldehydes. Lithium aluminum hydride (LiAlH4) and sodium borohydride (NaBH4) are reducing agents, not oxidizing agents.
Select the appropriate reagent: Pyridinium chlorochromate (PCC) is a mild oxidizing agent that selectively oxidizes primary alcohols to aldehydes without further oxidation to carboxylic acids, making it the correct choice for this reaction.