Aromatic Compounds as Primary FG: Root suffix: -benzene (when no other FG present). When a FG is present in the molecule, but not attached directly to the ring, the aromatic ring usually gets named as a substituent. methylbenzene (toluene) nitrobenzene…
Organic Chemistry Nitro Group Nomenclature: Nitro groups: -NO2. No “priority” — like alkyl or halide substituents. Always named as a substituent, even if no other FG in molecule. Never named with suffix.
Organic Chemistry Phenol Nomenclature: There is no real root suffix for phenols. They are either named as derivatives of phenol, or as hydroxy-substituted aromatic compounds (e.g., 3-hydroxybenzoic acid).