Perfluoroalkyl Grignard Reagents: NMR Study of 1-Heptafluoropropylmagnesium Chloride in Solution
2016
Guang, Jie | Hopson, Russell | Williard, Paul G. | Fujiu, Motohiro | Negishi, Kazuyuki | Mikami, Koichi
We report on the generation of a perfluoroalkyl Grignard reagent (FRMgX) by exchange reaction between a perfluoroalkyl iodide (FR–I) and a Grignard reagent (RMgX). ¹⁹F NMR was applied to monitor the generation of n-C₃F₇MgCl. Additional NMR techniques, including ¹⁹F COSY, NOESY, and pulsed gradient spin–echo (PGSE) diffusion NMR, were invoked to assign peaks observed in ¹⁹F spectrum. Schlenk equilibrium was observed and was significantly influenced by solvent, diethyl ether, or THF.
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