What product is obtained when isobutyl chloride reacts with benzene in presence of `AICI_3` ?

Explanation

The initially formed carbocation rearranges to a more stable tertiary carbocation as shown.
`CH_underset(CH_3)underset(|)(CH)-CH_2Cl + AlCl_3 to CH_3-underset(CH_3)underset(|)(CH)-overset(+)(CH_2)+ overset(" "-)(A)lCl_4`
`underset(("Primary"))(CH_3-underset(CH_3)underset(|)(CH)-overset(+)(CH_2))overset(H^(-)"shift")(rarr)underset("(tertiary)")(CH_3-underset(CH_3)underset(|)overset(+)(C)-CH_3)`

The final product of the reaction is tert.butyl benzene.