The given reaction sequence involves the conversion of a compound into Aniline. Letβs examine the steps involved in the sequence:
- The first step involves bromination using \(Br_2\) in carbon disulfide (\(CS_2\)) at a temperature of 0β5Β°C. This typically adds bromine atoms to the compound. Given the presence of benzene, it leads to the formation of bromo-derivative compounds.
- In the second step, sodium nitrite (\(NaNO_2\)) and hydrochloric acid (\(HCl\)) are used to convert the bromo compound to a diazonium salt via the formation of nitrous acid. The reaction with nitrous acid is typical for the diazotization of aromatic amines.
- Finally, the diazonium salt is reduced using hypophosphorous acid (\(H_3PO_2\)) to form aniline, an aromatic amine.
Thus, the sequence of reactions results in the formation of Aniline from an aromatic compound through bromination, diazotization, and reduction.
Option analysis:
- Benzoic acid: This compound is not typically produced from the given reaction sequence without carboxylation steps.
- Salicylic Acid: Typically formed by Kolbe-Schmitt reaction; not applicable here.
- Phenol: Phenol can be produced from diazonium salt but not in this specific sequence and conditions.
- Aniline: Correct answer as per the given reaction mechanism explained above.
Conclusion: The correct answer is Aniline.