1 / 15

Aromatic Nomenclature

Aromatic Nomenclature. Monosubstituted Benzenes. Monosubstituted aromatics are named using -benzene as the parent name. Monosubstituted Benzenes. Alkyl substituted benzenes are named according to the chain length of the alkyl group. Six Carbons or Fewer. Named as alkylbenzene.

tamika
Download Presentation

Aromatic Nomenclature

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Aromatic Nomenclature

  2. Monosubstituted Benzenes • Monosubstituted aromatics are named using -benzeneas the parent name.

  3. Monosubstituted Benzenes • Alkyl substituted benzenes are named according to the chain length of the alkyl group. • Six Carbons or Fewer. Named as alkylbenzene. • ethylbenzene

  4. Monosubstituted Benzenes • Six Carbons or More. Named as phenyl-substituted alkane. • 4-phenylnonane

  5. Monosubstituted Benzenes • The benzyl group is another common name for a monosubstituted methylbenzene (toluene). • benzylbromide

  6. Monosubstituted Benzenes • There are a number of nonsystematic (common) names which you should learn for the monosubstituted benzenes. • These common names are used when naming aromatic compounds.

  7. Monosubstituted Benzenes

  8. Disubstituted Benzenes • Disubstituted benzenes can be named one of two ways. Each method describes the relationship of the two groups on the six membered aromatic ring. • Systematic numbering of the aromatic ring. • Using the prefixes ortho-, meta-, or para-. • The common names for monosubstituted benzenes can be used as parent names for disubstituted aromatics.

  9. Disubstituted Benzenes • ortho- = o- = 1,2-disubstituted • meta- = m- = 1,3-disubstituted • para- = p- = 1,4-disubstituted

  10. Disubstituted Benzenes • There are a number of nonsystematic (common) names for disubstituted benzenes that you should be familiar with.

  11. Polysubstituted Benzenes • Polysubstituted benzenes are named by numbering the position of each substituent on the ring. • The numbering is carried out to give the substituents the lowest possible numbers. • The substitutents are listed in alphabetical order when writing the name. • Common names of the monosubstituted benzenes can also be used as parent names for polysubstituted aromatics.

  12. Polysubstituted Benzenes 4-Bromo-2-ethyl-1-nitrobenzene

  13. Polycyclic Aromatic Hydrocarbons (PAH)

  14. Polycyclic Aromatic Hydrocarbons (PAH) • Benzo[a]pyrene is an important PAH which has been studied extensively. • Benzo[a]pyrene is found in chimney soot, barbecued meat and cigarette smoke. • Metabolites of benzo[a]pyrene form adducts with DNA.

  15. Polycyclic Aromatic Hydrocarbons (PAH)

More Related