- Activation of SF6 at Platinum Complexes: Formation of SF3 Derivatives and Their Application in Deoxyfluorination Reactions
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The activation of SF6 at [Pt(PR3)2] R=Cy, iPr complexes in the presence of PR3 led selectively and in an unprecedented reaction route to the generation of the SF3 complexes trans-[Pt(F)(SF3)(PR3)2]. These can also be synthesized from SF4 and the SF2 derivative trans-[Pt(F)(SF2)(PCy3)2][BF4] was characterized by X-ray crystallography. trans-[Pt(F)(SF3)(PR3)2] complexes are useful tools for deoxyfluorination reactions and novel fluorido complexes bearing a SOF ligand are formed. Based on these studies a process for the deoxyfluorination of ketones was developed with SF6 as fluorinating agent.
- Berg, Claudia,Braun, Thomas,Ahrens, Mike,Wittwer, Philipp,Herrmann, Roy
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supporting information
p. 4300 - 4304
(2017/04/04)
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- Radical phosphination of organic halides and alkyl imidazole-1- carbothioates
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Taking advantage of a radical-based methodology, mild and chemoselective phosphination reactions of organic halide and alkyl imidazole-1-carbothioates have been developed. The mild reaction conditions allow labile functional groups to survive during the reaction. Copyright
- Sato, Akinori,Yorimitsu, Hideki,Oshima, Koichiro
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p. 4240 - 4241
(2007/10/03)
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- Preparation of organohalosilanes
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In an industrial process for preparing organohalosilanes by reacting metallic silicon particles with an organohalide in the presence of a copper catalyst, a contact mass composed of the metallic silicon and the catalyst further contains an effective amount of a phosphine chalcogenide compound. The invention drastically increases the silane formation rate and the utilization of silicon without lowering the selectivity of useful silane.
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- A Single-Crystal ESR and Quantum Chemical Study of Electron-Capture Trialkylphosphine Sulfide and Selenide Radical Anions with a Three-Electron Bond
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A low-temperature ESR study of electron-capture phosphoranyl radicals in X-irradiated single crystals of trialkylphosphine sulfides and selenides (R3PX: X=S, Se; R=CH3, C2H5, C6H11) is presented.The principal values and direction cosines of the g tensors
- Janssen, Rene A. J.,Kingma, Joost A. J. M.,Buck, Henk M.
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p. 3018 - 3026
(2007/10/02)
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- Process for the preparation of phosphine oxides and sulphides
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A process for the preparation of phosphine oxides or sulphides of the formula: EQU1 in which R is a linear or branched aliphatic radical containing 5-12 carbon atoms, aralkyl radical selected from the group consisting of lower alkyl of 2-3 carbon atoms substituted by a phenyl group or R is cyclohexyl and X is an oxygen or sulphur atom comprising reacting a halo-compound of the formula R--Hal, in which Hal is chlorine, bromine or iodine, with magnesium to form a Grignard derivative of the formula RMgHal, the reaction being carried out initially in a very small amount of diethyl ether and then in a solvent mixture containing a preponderant amount of an aliphatic or aromatic hydrocarbon, which is liquid at room temperature or triethylamine, adding phosphorus oxychloride or phosphorus sulphochloride to the reaction mixture containing the Grignard derivative, and isolating the phosphine oxide or phosphine sulphide formed by removing the solvent by steam stripping or steam distillation. These compounds are valuable for use in the selective extraction of rare metals.
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