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Lecture notes
Alcohol reaction
New1. Nitration with Dilute Nitric Acid (dil. HNO3) 
 
Reaction: Phenol reacts with dilute HNO3 at a low temperature. 
 
Products: Forms a mixture of ortho-nitrophenol and para-nitrophenol. 
 
Key Concept: The hydroxyl group (-OH) is a strong activating group that directs incoming groups to the ortho and para positions. 
 
2. Nitration with Concentrated Nitric Acid ( conc. HNO3) 
 
Reaction: Phenol reacts vigorously with concentrated HNO3. 
 
Products: Forms 2,4,6-trinitrophenol, commonly known as ...