ORGN 573 |
| Pi-pi interactions are prevalent weak interactions in many biological and organic systems. These interactions are often believed to be less than 1 kilocalorie in strength, making them hard to measure. Systems that have slow rotation between two states that either allow or disallow pi-pi interactions are an attractive avenue for investigating these interactions. This slow rotation allows for quantification of the relative abundance of the two states at room temperature via NMR spectroscopy. Presented herein is a study of the association energy of pi-pi face to face interactions, as derived from isomeric ratio, under various solvent conditions. The systems investigated are the [4+2] cycloadducts of N-aryl ortho phenoxy maleimides and phencyclone and phencyclone like systems.
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Materials, Devices and Switches, Metal-Mediated Reactions, Asymmetric Reactions, Total Synthesis, Biologically-Related Molecules and Processes
7:00 PM-9:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- La Louisiane, Blrm. C, Poster
Sci-Mix
Division of Organic Chemistry |
