What happens when benzene reacts with n-propylchloride in presence of anhydrous aluminium chloride?

Explanation

The major product of the reaction is isopropyl benzene (cumcnc).
The initially formed `CH_(3)CH_(2) overset(+)(CH_(2))` gets rearranged to more stable secondary carbocation `CH_(3) overset(+)(CHCH_(3))` Hence the major product is isopropyl benzene and minor product is propyl benzene.
`CH_(3)CH_(2)CH_(2)Cl+AlCl_(3) Leftrightarrow CH_(3)CH_(2) overset(+)(CH_(2))+AlC_(4)^(-) , CH_(3) CH_(2) overset(+)(CH_(2)) overset(H^(-)" shift")to CH_(3) overset(+)(CH) CH_(3)`