Step 1: Trace the reaction steps. The sequence involves the conversion of an amide to a carboxylic acid group, likely involving steps that introduce or modify amine functionalities. Step 2: Analyze the plausible structure of Z. Given the reaction sequence and typical outcomes, the formation of a carboxamide (CONH2) from the described reagents and conditions is most consistent with the chemistry involved.
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Approach Solution -2
To solve the problem, we need to identify the compound \( Z \) in the given reaction sequence. The sequence is as follows:
1. Step 1: The first step involves the reaction of methyl chloride (CH₃COCl) with aluminum chloride (AlCl₃), which is a Friedel-Crafts alkylation reaction. This step introduces a methyl group to the benzene ring, resulting in methylbenzene (toluene).
2. Step 2: In the second step, the methyl group on toluene undergoes oxidation with potassium permanganate (KMnO₄) in an alkaline medium, which oxidizes the methyl group to a carboxylic acid group (-COOH). This results in benzoic acid (C₆H₅COOH).
3. Step 3: In the third step, benzoic acid undergoes reduction with ammonia (NH₃), which leads to the formation of an amine group (-NH₂) replacing the carboxyl group. This results in aniline (C₆H₅NH₂).
4. Conclusion: The compound \( Z \) formed after these reactions is aniline (C₆H₅NH₂), which is option (3).
Final Answer: The correct option is (C) aniline (C₆H₅NH₂).
