JEE Main levelSingle correct optionDifficulty 2 of 3hc208
Benzene reacts with 1-chloropropane in the presence of anhydrous AlClX3. The major product is:
APropylbenzene
BIsopropylbenzene (cumene)
C1,3-Dipropylbenzene
DToluene
Answer: B
The primary carbocation from CHX3CHX2CHX2Cl and AlClX3 undergoes a 1,2-hydride shift to the more stable secondary cation, which alkylates benzene to give isopropylbenzene.