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Unformatted text preview: , but avoid it by adopting a non-planar structure Also includes molecules with 4n + 2 electrons that cant be planar Non-aromatic Compounds H H -Annulene Cyclooctatetraene Contain 2 or more fused rings Huckels rule is not applicable Polycyclic Aromatic Hydrocarbons N Predicting Aromaticity (17.10) The Inscribed polygon method , allows one to determine relative energies of MOs for cyclic, completely conjugated compounds. Also known as the Frost Circle Method Chapter 18 Electrophilic Aromatic Substitution Free Energy Diagram for Electrophilic Aromatic Substitution (EAS) EAS Reactions (18.1) 1)Halogenation (Br, Cl) 2)Nitration 3)Sulfonation 4)Friedel-Crafts alkylation 5)Friedel-Crafts acylation...
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This note was uploaded on 10/24/2011 for the course CHEMISTRY 623 taught by Professor Benson during the Spring '11 term at Kansas.
- Spring '11
- Organic chemistry