Youtor
132 Heterocyclic Aromatic Compounds Pyrrole Pyridine amp Other Heterocyclics
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The structure and nomenclature of several heterocyclic aromatic compounds are provided: • 1. Pyrrole • 2. Furan • 3. Thiophene • 4. Imidazole • 5. Thiazole • 6. Pyridine • 7. Pyrimidine • 8. Quinoline • 9. Isoquinoline • 10. Indole • 11. Purine • The requirements for aromaticity are quickly reviewed. Pyridines basicity is compared with that of piperidine. The reactivity of pyridine is contrasted with that of benzene. Pyrrole’s basicity is compared with that of pyridine and piperidine and used as further evidence for pyrrole’s aromatic nature. The importance of pyrrole to the porphyrin ring system is given as is the structures of porphyrin dependent molecules: • 1. Cytochrome c • 2. Heme • 3. Chlorophyll a • 00:36 Pyrrole • 01:14 Furan • 01:42 Thiophene • 02:06 Imidazole • 02:48 Thiazole • 03:28 Pyridine • 03:58 Pyrimidine • 04:34 Quinoline • 05:17 Isoquinoline • 06:01 Indole • 06:40 Purine • 08:03 Requirements for Aromaticity • 14:46 Basicity Pyridine vs Piperidine • 17:31 Reactivity Pyridine vs Benzene • 22:41 Pyrrole vs Pyridine: Aromaticity Basicity • 26:03 Porphyrin Ring System • 31:39 Cytochrome c • 32:49 Heme • 35:08 Chlorophyll a
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