Grignard reagent produces alkane if reacts with

• Phenol
• Carboxylic acid
• Amine
• All of these

Grignard reagents are highly reactive organomagnesium compounds that can react with various functional groups. When considering the options provided, here's how they interact:

Reactivity with Different Compounds

• Phenol: Grignard reagents react with phenols to produce alkanes. The reaction involves the deprotonation of the hydroxyl group.
• Carboxylic Acid: Grignard reagents do not produce alkanes when reacting with carboxylic acids. Instead, they react to form a carboxylate salt.
• Amine: Similar to carboxylic acids, Grignard reagents do not yield alkanes when reacting with amines. They typically react to form an unstable intermediate.

Final Thoughts

Among the options listed, only phenol will lead to the formation of an alkane when reacted with a Grignard reagent. Therefore, the correct answer is Phenol.