Since recognizing the significance of reversible oxidative addition of palladium into aryl halides in the synthesis of 2-bromo-indoles, the Lautens group has focused on unusual carbon-halogen reductive eliminations. These efforts led to the discovery of the novel palladium-catalyzed inter- and intramolecular carbohalogenation reaction – the formal addition of an sp2 carbon–iodide bond across an alkene. One current research direction is utilizing a range of aryl halides and pseudohalides as starting materials for carbohalogenation chemistry. This thesis describes complementary research, focusing on the expansion of functional group scope. Carbohalogenation has been developed to synthesize novel products including heteroaromatic compounds and 7-membered rings. Polyunsaturated aryl iodide substrates were investigated with the goal of performing domino carbohalogenation. Ultimately, the successful halogen exchange process was combined with domino carbohalogenation in an efficient halogen-exchange domino reaction. Additionally, preliminary studies on enantioselective carbohalogenation, and functionalization of the neopentyl iodide products are also discussed.
| Identifer | oai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/32246 |
| Date | 21 March 2012 |
| Creators | Howell, Jennifer K. |
| Contributors | Lautens, Mark |
| Source Sets | University of Toronto |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis |
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