The major product of which of the following reaction is not obtained by rearrangement reaction?

Step-by-step solution

In option (A), the Friedel-Crafts alkylation of benzene with 1-chloropropane involves the formation of a primary carbocation, CH₃CH₂CH₂^+ . This undergoes a 1,2-hydride shift to form a more stable secondary carbocation, CH₃CH^+CH₃ , which then attacks the benzene ring to yield cumene. Thus, rearrangement occurs. In option (B), the acid-catalyzed dehydration of tert-butyl alcohol proceeds via the formation of a tert-butyl carbocation, (CH₃)₃C^+ . Since it is already a highly stable tertiary carbocation, it does not