CHED 833 |
| [14]Annulene is obtained from a heptadiyne condensation 1,6-heptadiyne undergoes self-condensation in the presence of potassium tert-butoxide to yield 1,5-[14]annuldiyne, which exhibits a diatropic ring current in the 1H-NMR spectra and is oxygen sensitive. It can be reduced to its respective dianion and anion radical, which are paratropic. The EPR spectral pattern, for the anion radical, agrees nearly perfectly with B3LYP/6-31G* prediction. The neutral annuldiyne can be hydrogenated to [14]annulene, which is the second stable aromatic annulene. [6]Annulene, or benzene, is the first. |
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Undergraduate Research Poster Session: Polymer Chemistry
11:00 AM-1:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |