Identify the major products P, Q and R in the following sequence of reactions :

Question

Product of the following reaction is:

Answer 1

The given sequence involves a series of reactions starting with benzene and propyl chloride in the presence of anhydrous AlCl₃, followed by reactions with O₂ and acid work-up to form compounds Q and R. Let's analyze each step:

First Reaction: The first step is a Friedel-Crafts alkylation. Propyl chloride (CH₃CH₂CH₂Cl) reacts with benzene in the presence of anhydrous AlCl₃ to form isopropylbenzene (cumene) due to rearrangement of the propyl carbocation.
Oxidation: Cumene is oxidized using O₂ to form cumene hydroperoxide.
Acid Work-up: In the presence of an acid (H₃O⁺/Δ), cumene hydroperoxide rearranges to form phenol and acetone.

Therefore, the products Q and R are phenol (Q) and acetone (R).

Thus, the correct answer is the structure shown in Option D.

Answer 2

The given sequence involves a series of reactions starting with benzene and propyl chloride in the presence of anhydrous AlCl₃, followed by reactions with O₂ and acid work-up to form compounds Q and R. Let's analyze each step:

First Reaction: The first step is a Friedel-Crafts alkylation. Propyl chloride (CH₃CH₂CH₂Cl) reacts with benzene in the presence of anhydrous AlCl₃ to form isopropylbenzene (cumene) due to rearrangement of the propyl carbocation.
Oxidation: Cumene is oxidized using O₂ to form cumene hydroperoxide.
Acid Work-up: In the presence of an acid (H₃O⁺/Δ), cumene hydroperoxide rearranges to form phenol and acetone.

Therefore, the products Q and R are phenol (Q) and acetone (R).

Thus, the correct answer is the structure shown in Option D.

Identify the major products P, Q and R in the following sequence of reactions :

The Correct Option is D

Solution and Explanation

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