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When benzene is treated with n-propyl chloride in the presence of anhydrous AlCl3, the major product formed is:

1. 3-Propyl-1-chlorobenzene
2. n-Propylbenzene
3. No reaction occurs
4. Isopropylbenzene

Correct answer: Isopropylbenzene

Solution

The reaction involves the Friedel-Crafts alkylation, where n-propyl chloride reacts with benzene in the presence of AlCl3, leading to the formation of a more stable carbocation. The n-propyl carbocation can rearrange to form the more stable isopropyl carbocation, resulting in isopropylbenzene as the major product.

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