Phosphites diphenyl

Dllsodecyphenyl phosphite Diphenyl isodecyi ptnsihte. Diphenyl isooctyl phosphhe, Ethytiexyl diphenyl phosphite, Weston DPDP Weston ODPP Weston PDDP... 

Distearyl pentaerydirityl diphosphite stabilizer, color polyolefins Distearyl pentaeryihrityl diphosphite stabilizer, color PU Diisodecylphenyl phosphite. Diphenyl isodecyl phosphite. Diphenyl isooctyl phosphite, Ethylhexyl diphenyl phosphite Weston DPDP Weston ODPP Weston PDDP stabilizer, color PVC Weston ODPP Weston PDDP stabilizer, color styrenics Distearyl pentaer rltyl diphosphite stabilizer, colorants decorative paints EFKA -6220... 

Diphenyl phosphonate. See Diphenyl phosphite Diphenyl phosphorochloridate Diphenyl phosphoryl chloride. See Diphenyl chlorophosphate Diphenyl phthalate... 

Dimyristyl phosphite Dioctyl phosphite Diphenyl isooctyl phosphite Diphenyl phosphite Heptakis (dipropylene glycol) tri phosphite... 

Diisodecylphenyl phosphite Diphenyl isodecyl phosphite Diphenyl isooctyl phosphite Ethylhexyl diphenyl phosphite stabilizer, color adhesives Distearyl pentaerythrityl diphosphite stabilizer, color coatings Diisodecylphenyl phosphite Diphenyl isodecyl phosphite Diphenyl isooctyl phosphite Distearyl pentaerythrityl diphosphite Ethylhexyl diphenyl phosphite stabilizer, color copolymers 4,4 -lsopropylidenediphenol alkyl (C12-15) phosphites... 

DMsodecylphenyl phosphite Diphenyl isooctyl phosphite Ethylhexyl diphenyl phosphite stabilizer, processing PVC... 

A soln. of 0-benzyl phosphorous 0,0-diphenyl phosphoric anhydride prepared from monobenzyl phosphite, diphenyl phosphorochloridate, and dry pyridine in benzene added to 0-isopropylideneglycerol and 2,6-lutidine, stirred 1 hr. under anhydrous conditions 1,2-isopropylideneglyceryl benzyl phosphite. Y 79%. D. M. Brown and P. R. Hammond, Soc. 1960, 4229. 

A mixture of decanol, a small piece of Na, and triphenyl phosphite diphenyl methylphosphonite... 

Phosphites. Tertiary phosphites are also commonly used and are particularly effective ia most mixed metal stabilizers at a use level of 0.25—1.0 phr. They can take part ia a number of different reactions duting PVC processing they can react with HCl, displace activated chlorine atoms on the polymer, provide antioxidant functionaHty, and coordinate with the metals to alter the Lewis acidity of the chloride salts. Typical examples of phosphites are triphenyl phosphite [101 -02-0], diphenyl decyl phosphite [3287-06-7], tridecyl phosphite [2929-86-4], and polyphosphites made by reaction of PCl with polyols and capping alcohols. The phosphites are often included in commercial stabilizer packages. 

Solubility. Another desirable property of a degradant is its high solubihty in mbber but poor solubihty in water and solvents that come in contact with mbber. Poor solubihty in the mbber means that only small quantities of antioxidants can be dissolved without producing a bloom. As an example, N,lSf-diphenyl- phenylenediamine (DPPD) has limited use because of its poor solubihty in mbber. On the other hand, phenohc and phosphite antioxidants have high solubihty and bloom is not a problem. 

Salts of dithiocarbamic acid can be prepared by the addition of primary or secondary amines to carbon disulfide. This reaction is similar to 16-9. Hydrogen sulfide can be eliminated from the product, directly or indirectly, to give isothiocyanates (RNCS). Isothiocyanates can be obtained directly by the reaction of primary amines and CS2 in pyridine in the presence of DCC. ° In the presence of diphenyl phosphite and pyridine, primary amines add to CO2 and to CS2 to give, respectively, symmetrically substituted ureas and thioureas ... 

The value of using the preformed HHT with diphenyl phosphite in this procedure was readily apparent from the nearly quantitative conversion to glyphosate observed from 25. A much lower yield (38%) of glyphosate was obtained after hydrolysis when the same components (ethyl glycinate hydrochloride and formaldehyde) were mixed and heated with neat triphenyl phosphite to give triester 30 (43). 

When excess amounts of the HHT of phenyl glycinate 42 were used with diphenyl phosphite, the preferred product was the novel cyclic derivative 45 (2). Presumably, ring-opening of the HHT produced intermediate 43 first, which lost an equivalent of glycinate formaldimine to give 44. The proximity of the activated phenyl carboxylate ester to the N-H in 44 presumably promoted intramolecular cyclization to 45 with loss of phenol (2). 

The structure of the adduct formed from triethyl phosphite and diphenyl keten, which has been the subject of some speculation, is now shown to be (51). ... 

Phosphinyl radicals, obtained by hydrogen abstraction from dialkyl phosphites, have been trapped with t-nitrosobutane and the resultant nitroxyl radicals examined by e.s.r, The reaction of phosphinyl radicals, e.g. (5) and (6), with olefins has been shown to occur with retention of configuration at phosphorus. " These radicals have also been postulated as intermediates in the reactions of dialkyl disulphides and diaryl disulphides with phosphinates. " From the reaction of diphenyl disulphide... 

An Arbuzov reaction between gem-dibromocyclopropanes yields phosphonate esters (55) accompanied by debrominated compounds successful reaction requires the presence of traces of water (and is thus not the normal Arbuzov reaction) which, by studies with D2O, has been shown to supply the a-proton of (56), Normal Arbuzov reactions, using ethyl diphenyl phosphite, have been used to prepare a phosphonate isostere of B-D-arabinose-1,5-diphosphate. ... 

The kinetics of deuterium isotope exchange between diphenyl phosphine and t-butylthiol have been studied by H n.m.r. spectroscopy.274 A negative temperature coefficient was observed for the reaction of a perf1uoroalky1 phosphite with a fluorinated aldehyde.275 The kinetics for the reaction of alcohols with phosphoryl trichloride bore strong similarities to those of carboxylic acid derivatives.276 An interesting report desribed the solvolysis of ary 1 hydroxymethyl-phosphonates. It was shown that a phosphoryl group does not prevent carbocation formation on an immediately adjacent carbon atom.277... 

Methanesulfonates 844, obtained by addition of diphenyl phosphite to aldehydes At1 Cl IO and mesylation of the hydroxyl group of the adducts, react with benzotriazole to give diphenyl a-(benzotriazol-l-yl)benzylphosphonates 845. Lithiation and treatment with aldehydes Ar2CHO converts phosphonates 845 into stilbenes 846, which can eliminate benzotriazole to give diarylacetylenes 847 (Scheme 135) <2002ARK(xiii)17>. 

Preparation of 0,0-diphenyl 2-methylthio-l-(JV-phenylthioureido)ethylphosphonate — Reaction of triphenyl phosphite with an imide generated in situ... 

Preparation of diphenyl l-(benzylcarbamoyl)-4-(phthalimido)-l-phosphonate — Reaction of a phthalimido-protected aminoaldehyde with a triaryl phosphite in the presence of benzyl carbamate... 

A series of 1-aminoalkanediphosphonic acids has been reported by the treatment of the N-phenylthiourea derivatives of a>-diethoxyphos-phinoylaldehydes with triphenyl phosphite.343 This constitutes an approach toward the analogues of aspartic and glutamic acid in which both carboxylate sites have been replaced by phosphonic acid functions. A similar approach has also been reported to be of use for the preparation of (diphenyl ester) phosphonate analogues of ornithine, lysine, and homolysine.344345... 

A mixture of benzylcarbamate (30.6 g, 0.2 mol), paraformaldehyde (6 g, 0.2 mol), acetic anhydride (25.5 g, 0.25 mol), and acetic acid (20 ml) was stirred for 3 h at 60 to 70°C. Triphenyl phosphite (62.1 g, 0.2 mol) was then added, and the mixture was stirred for 2 h at 110 to 120°C. After evaporation of acetic acid and the remaining acetic anhydride under reduced pressure, the residue was dissolved in methanol (150 ml). The mixture was allowed to stand at -10°C for 4 h, after which the precipitate was isolated by suction filtration, washed with methanol, and air-dried. The precipitate was recrystallized from chloro-formtmethanol to give pure diphenyl benzyloxycarbonylami-nomethanephosphonate (38 g, 48%) of mp 114 to 116°C, which exhibited IR and NMR spectra and analyses in accord with the proposed structure. 

Arbuzov, B.A., Sorokina, T.D., Fuzhenkova, A.V., and Vinogradova, V.S., Reaction of l,2-diphenyl-4-benzalpyrrolidine-3,5-dione with trimethyl phosphite and tris(dimethylamino)phosphine, Bull. Acad. Sci. U.S.S.R., 22, 2577, 1973. 

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