Nomenclature of Aromatic Compounds

Nomenclature of Aromatic Compounds

• Aromatic compounds resemble benzene in chemical behavior.
• Examples include toluene, phenol, aniline, acetophenone, benzaldehyde, benzoic acid, benzonitrile, ortho-xylene, and styrene.

Monosubstituted Benzene Derivatives

• Named by prefixing the substituent group name to "benzene".
• Examples:
  • Bromobenzene
  • Nitrobenzene
  • Phenol (common name for benzenol)
  • Toluene (common name for methylbenzene)
• Common names are not always used when following IUPAC naming rules.

Disubstituted Benzene

• Number carbon atoms starting from the substituent with the highest priority.
• Use terms ortho (o), meta (m), and para (p) to describe positions of substituents.
  • Ortho: [1,2] positions
  • Meta: [1,3] positions
  • Para [1,4] positions
• Examples include:
  • o-dichlorobenzene
  • p-nitrophenol
  • m-chloroiodobenzene

Polysubstituted Benzene

• Indicate positions by using numbers.
• Example: 1,2,4-trichlorobenzene
• Examples include:
  • 2-bromo-4-nitrophenol

Test your knowledge on the nomenclature of aromatic compounds including monosubstituted, disubstituted, and polysubstituted benzene derivatives. Familiarize yourself with IUPAC naming rules and examples to reinforce your understanding of this important topic in organic chemistry.