ORGANIC SYNTHESIS APPLICATIONS OF NON-AQUEOUS FLUORIDE SALT SOLUTIONS
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:US20170057908A1
公开(公告)日:2017-03-02
Processes and reaction mixtures including non-aqueous solvent mixtures are presented. Non-aqueous solvent mixtures including fluoride salt and non-aqueous solvent combinations are provided that possess high fluoride ion concentrations useful for a range of applications, including organic synthesis. Further non-aqueous solvent mixtures are provided including a salt possessing a non-fluoride anion and a non-aqueous solvent that, when contacted with aqueous fluoride-containing reagents, extract fluoride ions to form non-aqueous fluoride-ion solutions possessing high fluoride-ion concentrations. The salts include an organic cation that does not possess a carbon in the β-position or does not possess a carbon in the β-position having a bound hydrogen. This salt structure facilitates its ability to be made anhydrous without decomposition. Example anhydrous fluoride salts include (2,2-dimethylpropyl)trimethylammonium fluoride and bis(2,2-dimethylpropyl)dimethylammonium fluoride. The combination of these fluoride salts with at least one fluorine-containing non-aqueous solvent (e.g., bis(2,2,2-trifluoroethyl)ether; (BTFE)) promotes solubility of the salt within the non-aqueous solvents.
An electron spin resonance study of fluoroalkoxy- and fluoroalkylphosphoranyl radicals
作者:Robert W. Dennis、Ian H. Elson、Brian P. Roberts、Robert C. Dobbie
DOI:10.1039/p29770000889
日期:——
Two series of phosphoranyl radicals, containing fluoroalkoxy or trifluoromethyl ligands, respectively, have been generated in solution by radical addition to trivalent phosphorus compounds, and their e.s.r. spectra have been studied. The spectra of the radicals RFOṖ(OR)3 and RFOṖMe(OR)2exhibit large isotropic phosphorus hyperfine splittings and long-range fluorine coupling with (in many cases) fewer
The Transesterification of Trialkyl Phosphites with Aliphatic Alcohols<sup>1,2</sup>
作者:Friedrich W. Hoffmann、Richard J. Ess、Robert P. Usingef
DOI:10.1021/ja01603a026
日期:1956.11
NON-AQUEOUS FLUORIDE SALTS, SOLUTIONS, AND THEIR USES
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:US20170062874A1
公开(公告)日:2017-03-02
Electrolyte solutions including at least one anhydrous fluoride salt and at least one non-aqueous solvent are presented. The fluoride salt includes an organic cation having a charge center (e.g., N, P, S, or O) that does not possess a carbon in the β-position or does not possess a carbon in the β-position having a bound hydrogen. This salt structure facilitates its ability to be made anhydrous without decomposition. Example anhydrous fluoride salts include (2,2-dimethylpropyl)trimethylammonium fluoride and bis(2,2-dimethylpropyl)dimethylammonium fluoride. Combining these fluoride salts with at least one fluorine-containing non-aqueous solvent (e.g., bis(2,2,2-trifluoroethyl)ether; (BTFE)) promotes solubility of the salt within the non-aqueous solvents. The solvent may be a mixture of at least one non-aqueous, fluorine-containing solvent and at least one other non-aqueous, fluorine or non-fluorine containing solvent (e.g., BTFE and propionitrile or dimethoxyethane). The electrolyte solutions may be employed in electrochemical cells, such as batteries, fuel cells, electrolysis systems, and capacitors.