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Tang 01 organic chemistry 2


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Tang 01 organic chemistry 2

  3. 3. Side-Groups <ul><li>Review the C-chain side groups from Gr. 11 or on pg 12 in your text book. </li></ul><ul><li>Two additional special cases are introduced here. </li></ul><ul><li>Propyl isomers </li></ul><ul><li>Butyl isomers </li></ul>ORGANIC CHEMISTRY
  4. 4. Isomers <ul><li>- Isomers are chemicals which have the same chemical formula, but different arrangement of atoms. </li></ul><ul><li>- Nomenclature should help differentiate one isomer from another. </li></ul>ORGANIC CHEMISTRY
  5. 5. Side-Group Isomers <ul><li>Propyl isomers </li></ul><ul><li>n -propyl group </li></ul><ul><li>isopropyl group </li></ul>ORGANIC CHEMISTRY
  6. 6. Side-Group Isomers <ul><li>Butyl Isomers </li></ul><ul><li>n -butyl group s -butyl group </li></ul><ul><li>(sec-butyl) </li></ul><ul><li>isobutyl group t -butyl group </li></ul><ul><li>(tert-butyl) </li></ul>ORGANIC CHEMISTRY
  7. 7. Homework Examples <ul><li>Textbook </li></ul><ul><li>p15 #1, 2 </li></ul><ul><li>p18 #3 - 6 </li></ul>ORGANIC CHEMISTRY
  8. 8. Alkene Isomers <ul><li>Depending on the arrangement of functional groups around the double bond, an alkene may be identified as cis- or trans- . </li></ul>CH 3 C=C CH 2 CH 3 H 3 C H CH 3 C=C CH 2 CH 3 H 3 C H cis trans ORGANIC CHEMISTRY
  9. 9. Aromatic Hydrocarbon Nomenclature <ul><li>Aromatic compounds contain a benzene ring, C 6 H 6 , as a base. </li></ul><ul><li>Most of these compounds are volatile (easily vaporized) and are associated with a distinct aroma (good or bad!) </li></ul>ORGANIC CHEMISTRY
  10. 10. Aromatic Hydrocarbon Nomenclature <ul><li>Last year, you learned about the benzene ring as a side group. In this case, we refer to the group as a phenyl side-group. </li></ul>2-phenylhexane ORGANIC CHEMISTRY
  11. 11. Aromatic Hydrocarbon Nomenclature <ul><li>With side-chains, aromatic naming follows similar rules as for C-chains. </li></ul>methylbenzene chlorobenzene ethylbenzene ORGANIC CHEMISTRY
  12. 12. Aromatic Hydrocarbon Nomenclature 1,2-dimethylbenzene 1,4-dimethylbenzene 1,3-dimethylbenzene ORGANIC CHEMISTRY o-dimethylbenzene m-dimethylbenzene p-dimethylbenzene ortho meta para
  13. 13. Homework Examples <ul><li>Textbook </li></ul><ul><li>p21 #7, 8 </li></ul><ul><li>p22 #1 - 4 </li></ul>ORGANIC CHEMISTRY
  14. 14. ORGANIC CHEMISTRY Solve these Rebus puzzles