Question

Benzene reacts with n – propyl chloride in the presence of anhydrous alcl3 to give predominantly (a) n-propyl benzene (b) isopropyl benzene (c) 3-propyl-1-chlorobenzene (d) no reaction

Answer 1

The correct answer is the option b - Isopropyl benzene.

Isopropyl benzene is also called as Cumene, which is the product that is formed from the Friedel−Crafts reaction.

The carbonium ion is formed in the Friedel−Crafts reaction. When n-propyl chloride is allowed to react with Benzene, in the presence of anhydrous Aluminium chloride (AlCl₃), then n-propyl carbonium ion is formed. This n-propyl carbonium ion gets converted to a stable isopropyl carbonium ion along with the formation of cumene or isopropyl benzene.

Answer 2

Answer:

correct answer is option b)