ORGN 669 |
| Zeynep Delen and Paul M. Lahti. Department of Chemistry, University of Massachusetts, Amherst, MA 01003 |
| Phenols are considered important for biological systems due to their antioxidant properties. 2,6-Di-t-butyl phenols with varying heterocyclic rings at their para positions were synthesized using palladium and copper coupling chemistry. The crystal structures of the phenols revealed an interesting hydrogen-bonding pattern involving the nominally quite hindered phenolic OH with heterocycle nitrogen acceptors. FTIR spectra helped to differentiate apparent H-bonds from intermolecular close contacts that involve OH groups. ESR spectra of the corresponding phenoxyl radicals were examined. A UV kinetic study was carried out to compare the stabilities of the phenoxyl radicals under ambient solution conditions. |
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New Reactions, Methodology, Heterocycles, Aromatics
8:00 PM-10:00 PM, Wednesday, August 25, 2004 Pennsylvania Convention Center -- Hall D, Poster
Division of Organic Chemistry |