NEETChemistryHydrocarbons
Benzene is treated with acetyl chloride in the presence of anhydrous AlCl ₃ to yield compound P . Which of the following statements is correct regarding compound P ?
Options
- AIt reduces Tollens' reagent to give a silver mirror.
- BIt produces a yellow precipitate when warmed with iodine and aqueous sodium hydroxide.
- CIt can be prepared by the vigorous oxidation of ethylbenzene with alkaline potassium permanganate.
- DIt reacts with bromine water to form a white precipitate.
Correct answer
B. It produces a yellow precipitate when warmed with iodine and aqueous sodium hydroxide.
Step-by-step solution
The reaction of benzene with acetyl chloride ( CH ₃ COCl ) in the presence of anhydrous AlCl ₃ is a Friedel-Crafts acylation reaction. The product P formed is acetophenone ( C ₆ H ₅ COCH ₃ ). Let us evaluate the given options: Option (1): Acetophenone is a ketone and does not reduce Tollens' reagent. This test is characteristic of aldehydes. Option (2): Acetophenone is a methyl ketone ( C ₆ H ₅ CO - CH ₃ ). It undergoes the iodoform reaction when warmed with iodine and aqueous sodium hydroxide to give a yellow prec