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Organic chemistry for medicine and biology students Chem 2311 Chapter 4 Aromatic Compounds

Organic chemistry for medicine and biology students Chem 2311 Chapter 4 Aromatic Compounds By Prof. Dr. Adel M. Awadallah Islamic University of Gaza. Aromatic Compounds Hydrocarbons (contain only carbon and hydrogen) Saturated: (Contain only single bonds) Alkanes (C n H 2N + 2 )

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Organic chemistry for medicine and biology students Chem 2311 Chapter 4 Aromatic Compounds

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  1. Organic chemistry for medicine and biology students Chem 2311 Chapter 4 Aromatic Compounds By Prof. Dr. Adel M. Awadallah Islamic University of Gaza

  2. Aromatic Compounds Hydrocarbons(contain only carbon and hydrogen) • Saturated: (Contain only single bonds) Alkanes (CnH2N + 2 ) Cycloalkanes (CnH2N ) b)Unsaturated: contain Alkenes: double bonds (,,,CnH2N) Alkynes: triple bonds ((CnH2N - 2) Aromatic: benzene like compounds

  3. Facts about double and triple bonds

  4. Structure of Benzene Benzene is the parent of a class of especially stable compounds called aromatic compounds. It was first isolated by Faraday in 1825 from compressed illuminating gas Different structures were suggested for benzene (C6H6). The regular conjugated hexagon structure was suggested by Kekuli` in 1865

  5. Orbital Model for Benzene

  6. Nomenclature of Aromatic Compounds

  7. Disubstituted Benzene

  8. Assigning Priority • Halogens < alkanes < alkenes < amines < OH < ketone < aldehyde < acid < ester • Examples

  9. Aromatic Compounds in Nature and Health

  10. Reaction of benzene with n-propyl chloride produces isopropyl benzene because of rearrangement

  11. How can you prepare the following compound? Starting from benzene

  12. Polycyclic aromatic compoundscigarettes

  13. C60, An aromatic sphere • The Fullerenes

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