JEE Main levelSingle correct optionDifficulty 2 of 3hc152
Benzene is treated with 1-chloropropane and anhydrous AlClX3. The major product is
An-propylbenzene
B1,4-dipropylbenzene
Cpropiophenone
Disopropylbenzene (cumene)
Answer: D
The primary carbocation CHX3CHX2CHX2X+ formed from AlClX3 rearranges by a 1,2-hydride shift to the more stable secondary isopropyl cation, which alkylates the ring: isopropylbenzene.