Friday, January 11, 2019 at 4:00pm to 5:00pm
A. Paul Schaap Science Center, Auditorium 1000
35 East 12th Street, Holland, MI 49423-3605
Poly(4-vinylpyridine-N-oxide) as an oxygen atom transfer reagent"
Abstract: Pyridine-N-oxide is an oxygen atom transfer (OAT) reagent used as a stoichiometric oxidant in metal-catalyzed oxidation reactions. A polymer derivative of the N-oxide, poly(4-vinylpyridine-N-oxide), was discovered in the 1960’s, but has not been investigated in OAT reactions. Could the insoluble poly(4-vinylpyridine-N-oxide), here called PVP-N-oxide, offer advantages over the molecular pyridine-N-oxide? PVP-N-oxide was synthesized and its reactivity compared to pyridine-N-oxide in the oxidation of phosphines and phosphites. Metal-catalyzed reactions were attempted with PVP-N-oxide. Recycling and reuse of the polymer backbone are described.
Bio: Born and raised in the Carolinas, Dr. Turlington worked tirelessly on his family's tomato farm until the age of 18, when he decided he never wanted to pick tomatoes again. This motivation spurred him on to attend Furman University, where he earned a B.S. in chemistry, and then on to the The University of North Carolina at Chapel Hill, where he completed his Ph.D. in inorganic chemistry. Even though the labor in the chemistry laboratory was still intense, Dr. Turlington considered the air-conditioned chemistry labs a vast improvement over sweltering farm fields. Dr. Turlington moved west after graduation to complete a two-year stint as a postdoctoral scholar at Stanford University in California, before happily settling in the midwest as an Assistant Chemistry Professor at Hope College in 2017.