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Phosphonic acid difluorides

Spin-spin coupling constants for a number of phosphonic acid difluorides RP(0)F2 have been evaluated from H- 31P and H- 19F double-resonance experiments.313 Force-constant calculations using a simplified valence force field are reported for the compounds XPF2OMe and XPF(OMe)2, where X = 0 or S.314... [Pg.351]

Sodium hexafluorosilicate Phosphonic acid difluorides from phosphonic acid dichlorides... [Pg.177]

Phosphonium iodide, 4510 Phosphonium perchlorate, 4000 Phosphorous acid, see Phosphonic acid, 4499 Phosphorus azide difluoride—borane, 4310 Phosphorus azide difluoride, 4309 Phosphorus chloride difluoride, 3973 f Phosphorus, 4868... [Pg.2125]

Miyatake and Hay [46] reported the first phosphonic acid containing polymers and copolymers from three phosphine-containing aromatic difluorides, prepared in accordance with the following Scheme 1 ... [Pg.128]

The conversion of an aryldichlorophosphine into the phosphonic dichloride, directly or indirectly, has been widely described. Aryltetrafluorophosphoranes are converted into the corresponding phosphonic difluorides with hexamethyldisiloxane or other similar silicon compounds A constant-boiling mixture of PhP(0)F2 and PhP(S)F2 is obtained from KSO2F and PhPCl2 Trichlorodiphenylphosphorane and MeOPCl2 give diphenylphosphinic acid in 92% yield. ... [Pg.118]

Titanium tetrachloride is an efficient reagent for the conversion of trialkyl phosphites and dialkyl hydrogen phosphonates into dialkyl phosphorochloridates. Imidazolides and dialkyl or diaryl phosphoric acids react with acyl fluorides - benzoyl fluoride and oxalyl difluoride being the reagents of choice - to give quantitative yields of the phosphoryl fluorides. The procedure is adaptable to the preparation of fluorides of carbohydrate phosphates in this field, the reaction between the ceu bohydrate and tris-l//-imidazolylphosphine oxide or sulphide with the replacement of one imidazole... [Pg.113]

See other pages where Phosphonic acid difluorides is mentioned: [Pg.107]    [Pg.583]    [Pg.39]    [Pg.346]    [Pg.243]    [Pg.243]    [Pg.267]    [Pg.107]    [Pg.583]    [Pg.39]    [Pg.346]    [Pg.243]    [Pg.243]    [Pg.267]    [Pg.366]    [Pg.292]    [Pg.400]    [Pg.169]    [Pg.169]    [Pg.19]    [Pg.297]    [Pg.155]    [Pg.63]    [Pg.68]    [Pg.170]    [Pg.242]   


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Phosphonous acid

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