CHED 108 |
| In an effort to update our traditional extraction experiments, we searched for an alternative that would appeal to the large population of biology students enrolled in our organic chemistry course. We chose to adopt a procedure that featured the extraction of maltol from Fraser fir needles (www3.wcu.edu/~butcher/plant.html). As an endangered conifer (J.Chem.Ed. 1998, 75,1592), the Fraser fir affords an environmental as well as a biological connection. We have modified the published procedures to incorporate expanded use of NMR. Through hands-on 13C NMR and 1H NMR analyses of their extracts, students gain valuable experience in structure determination via interpretation of spectroscopic data. An extension to link the extraction of maltol from the Fraser fir to the inorganic course is being developed. The experiment will make use of maltol's ability to form a bidentate ligand that complexes with many transition metal ions. |
|
General Posters
7:30 PM-9:30 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Sci-Mix
Division of Chemical Education |