Reaction Chart of Nitrobenzene (C₆H₅NO₂)
Nitrobenzene is a key building block in aromatic synthesis, famous for its meta-directing nature and diverse pH-dependent reduction pathways for JEE and NEET.
Known as the "Oil of Mirbane," nitrobenzene is a pale yellow liquid with an almond-like odor. In organic chemistry, it is highly significant due to the strong deactivating effect of the nitro group on the benzene ring, which directs incoming electrophiles to the meta position.
This reaction chart provides a systematic visualization of both Electrophilic Aromatic Substitution (EAS) and the critical reduction reactions that form aniline and other nitrogenous derivatives.
High-Yield: pH-Dependent Reductions
- Acidic Medium (Sn/HCl): Yields Aniline (Complete reduction).
- Neutral Medium (Zn/NH₄Cl): Yields Phenylhydroxylamine.
- Alkaline Medium: Depending on conditions, yields Azoxybenzene, Azobenzene, or Hydrazobenzene.
- Selective Reduction: (NH₄)₂S or NaSH can reduce one nitro group in dinitrobenzene (Zinin Reduction).
Figure: Comprehensive Overview of Nitrobenzene Chemical Properties
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