The reaction sequence provided involves several steps. Let's identify the major products A and B through each step:
Friedel-Crafts Alkylation: The first step involves a Friedel-Crafts alkylation where propyl chloride (\( \text{CH}_3\text{CHCH}_3\text{Cl} \)) reacts with benzene in the presence of \(\text{AlCl}_3\).
The product is isopropyl benzene (cumene).
Oxidation: The next step involves oxidation with oxygen, resulting in the formation of cumene hydroperoxide.
Acid Catalyzed Hydrolysis: The cumene hydroperoxide undergoes hydrolysis with sulfuric acid and water to yield phenol and acetone.
Hence, Product A is phenol.
Bromination: The remaining reaction sequence involves bromination of the aromatic ring of phenol using \(\text{Br}_2\) in \(\text{CS}_2\).
This yields para-bromophenol as the major product due to para-directing effects.
Hence, Product B is para-bromophenol.
Based on the above analysis, the major products A and B are phenol and para-bromophenol, respectively.
Therefore, the correct answer is represented by the given option image.
