Stereoselectivity of Nitrile Oxide Cycloadditions to Chiral Allylic Fluorides: Experiment and Theory
作者:Michael Prakesch、Danielle Grée、René Grée、Jennifer Carter、Ilyas Washington、K. N. Houk
DOI:10.1002/chem.200304967
日期:2003.11.21
The cycloadditions of nitrileoxides with new and previously studied allylic fluorides were examined. The 1,3-dipolar cycloaddition reactions were also investigated theoretically with density functional theory (B3LYP) based transition-state modelling. The predictions provided reasonable agreement with experiment, indicating that both steric and electronic effects have important influences on the stereoselectivities
Conformations of Allylic Fluorides and Stereoselectivities of Their Diels−Alder Cycloadditions
作者:Danielle Grée、Laurent Vallerie、René Grée、Loic Toupet、Ilyas Washington、Jean-Pierre Pelicier、Mercedes Villacampa、José María Pérez、K. N. Houk
DOI:10.1021/jo0016024
日期:2001.4.1
The preparations of new allylicfluorides from the corresponding alcohols are reported. Conformational analysis is achieved by comparison of experimental NMR measurements with theoretical (B3LYP) calculations of relative energies of conformers and J(H,H) and J(H,F) coupling constants. The Diels-Alder reactions of allylicfluorides are investigated experimentally and theoretically. The stereoselectivities