754-37-0

Upstream product

• 71040-59-0 Bis--tert.-butyl-phosphinoxid 
• 646-99-1 PO(C₄H₉)(CF₃)2 
• 7726-95-6 bromine 
• 3331-12-2 N,N-Dimethyl-di-trifluormethanphosphinsaeureamid 

Downstream Products

• 34679-65-7 CF₃O₃P^(2-) 
• 75-46-7 trifluoromethan 
• 2857-97-8 trimethylsilyl bromide 
• 19738-46-6 (CF₃)2POSi(CH₃)3 
• 18799-77-4 Bis(trifluormethyl)-thiophosphinsaeurebromid 
• 38562-84-4 Trimethylsilylbis(trifluormethyl)thiophosphinat 
• 32114-80-0 Bistrifluormethyltrimethylsiloxyphosphinoxid 

Relevant academic research and scientific papers

Trimethylsilyl esters of phosphorus acids. II. Reactions of fluoro- and trifluoromethylphosphorus(V) oxides and sulfides with hexamethyldisiloxane and hexamethyldisilthiane and the synthesis of a novel phosphorane

The reactions of the phosphoryl and thiophosphoryl compounds R2P(E)X (R = F, CF3; E = O, S; X = F, Cl, Br, CF3) with hexamethyldisiloxane and hexamethyldisilthiane ((Me3Si)2E′, E′ = O, S) have been investigated. The esters R2P-(E)E′SiMe3 or R2P(E′)ESiMe3 are generally formed, the yield obtained and ease of reaction being reduced when S replaces O in either starting reactant. Evidence indicates that the reactions proceed via intermediates having pentacoordinate phosphorus atoms, and one such phosphorane intermediate, (CF3)3P(OSiMe3)2, has been isolated and characterized. This new phosphorane, the first to be directly synthesized from a phosphine oxide, exhibits temperature-dependent 19F and 1H nmr spectral behavior which can be partially interpreted in terms of a fluxional trigonal-bipyramidal model. Nmr and new infrared data are also reported for (CF3)2P(O)Br.

Trimethylsilyl esters of phosphorus acids. I. Preparation and properties of esters of difluoro- and bis(trinuoromethyl)phosphinic, -thlophosphinic, and -dithiophosphinic acids

Trimethylsilyl esters of difluorophosphinic, -thiophosphinic, and -dithiophosphinic acids and their bis(trifluoromethyl) analogs have been prepared by one or more of four different synthetic routes and characterized by infrared and nmr spectroscopy. Their reactions with anhydrous hydrogen chloride and thermal behavior have been investigated, the esters containing a P-S-Si bridge unit being markedly less thermally stable than those possessing the P-O-Si bridge. Dimethylamine reacts with the bis(trifluoromethyl) esters to give Me3SiNMe2 and dimethylammonium salts of the phosphinic acids, but in the case of the difluoro esters the initial product Me3SiNMe2 then attacks P-F bonds in the anions F2PEE′- (E, E′ = O, S) yielding Me3SiF and the anions F(Me2N)PEE′-. Copyright 1972 by the American Chemical Society.