Phosphite, dibutyl

Dibutyl phosphite reacting with 2-butenoic acid ethyl ester yields the corresponding phosphonic acid ester see Eq. (65). [Pg.575]

Dibutyl phosphite, dl27 Dichloroanisoles, dl91, dl92... [Pg.189]

The diethyl 2-(ethoxycarbonyl)ethylphosphonate is prepared in 35% yield from sodium diethyl phosphite and ethyl 3-iodopropionate. -- Similarly, methyl 2,3-dibromopropionate reacts with sodium diethyl phosphite with fonnation of diethyl 2-(methoxycarbonyl)ethylphosphonate in low yield (15%). ° Most likely, these reactions occur via an elimination-addition process promoted by the sodium diethyl phosphite. Treatment of ethyl 3-bromobutyrate with sodium dibutyl phosphite in toluene at VO C affords dibutyl l-methyl-2-(ethoxycarbonyl)ethylphosphonate in 62% yield, ... [Pg.444]

Electrophilic Reactions.— Various substituted diarylphosphine oxides have been prepared by the reaction of dibutyl phosphite with the corresponding aryl Grignard reagent. [Pg.90]

Contact of one cm of a 0.025 molar solution of dialkyl phosphite in tetradecane at 403 K (130 C) with one gram of iron powder which had been ball milled under pentane resulted in depletion of the phosphorus in solution, as shown in Fig. 11-9. Reaction as well as adsorption took place, for soluble iron was found in the solutions of di(2-ethyIhexy1), dilauryl and distearyl phosphites. Chromatography of the solutions after contact revealed large quantities of alcohol dibutyl phosphite and di(2-ethylhexyl) phosphite yielded 92-97% of the theoretical amount of alcohol after 24 hours. Hydrolysis of the phosphite esters was ascribed to water adsorbed on the walls of the reaction tube and on the iron powder. Forbes and Battersby [46] postulated that hydrolysis is an important aspect of the mechanism of the additive action of phosphite esters. Oxidation to phosphate by the oxygen of the ambient air is deemed minor maximum augmentation of the oxygen uptake by a 6.5% solution of dibutyl phosphite over that of the tetradecane carrier fluid in the presence of iron was 20%. The easy hydrolysis of phosphites is well known. Partial... [Pg.284]

Dibutyl 2-cyanoethylphosphonate 27 A saturated solution of sodium butoxidein 1-butanol is added dropwise to a stirred and cooled mixture of dibutyl phosphite (97 g) and acrylonitrile (26.5 g) until the temperature ceases to rise. The mixture is then heated under reflux on a water-bath for a further 30 min, after which distillation affords the phosphonate (106 g, 80%), b.p. 143-144°/0.8 mm, nD23 1.4420. [Pg.696]

The phosphorous diester is usually used as sodium salt. The oldest technique is to treat the dialkyl phosphite with an equivalent amount of sodium291 in an inert solvent (toluene, xylene, dioxan, tetrahydrofuran, or ether) before adding the alkyl halide. Dibutyl phosphite has the advantage over the more frequently used diethyl phosphite that its sodium salt is soluble in hydrocarbons.292 Complete conversion into the sodium salt requires several hours heating unless the metal is finely divided for the preparation of stable dis-... [Pg.728]

Two class of ligands, DMEDA (Lll) (Scheme 9.12) [85], and amino acids (LI and L5) (Scheme 9.13) have been tested for copper-catalyzed C-P bond formation [86]. The former was effective for cross-coupling of aryl iodides with R2PH as well as dibutyl phosphite, while the latter could promote the formation of arylphospho-nates, arylphosphinates and arylphosphine oxides. [Pg.230]

Dibutyl hexanedioate. See Dibutyl adipate Dibutyl hydrogen phosphite Dibutyl hydrogen phosphonate. See Dibutyl phosphite... [Pg.1236]

Di-t-butylphenyl phosponite condensation prod, with biphenyl. See Phosphorus trichloride, reaction prods, with 1,1 -biphenyl and 2,4-bis (1,1-dimethylethyl) phenol Dibutyl phosphite... [Pg.1242]

Duraphos B(2EH)HP. See Dioctyl (2-ethylhexyl) phosphite Duraphos DBHP.. See Dibutyl phosphite Duraphos DMHP.. See Dimethyl hydrogen phosphite... [Pg.1590]

Syn-O-Ad P-312. See Tributyl phosphite Syn-O-Ad P-316. See Dibutyl phosphite Syn-O-Ad P-374. See Trioctyl phosphite Syn-O-Ad P-399. See Triphenyl phosphite Syn-O-Ad P-412. See 2-Ethylhexyl phosphate Syn-O-Ad P-415. See Amyl acid phosphate Syn-O-Ad P-417. See Butyl acid phosphate Synox 5LT. See 2,2 -Methylenebis (6-t-butyl-4-methylphenol)... [Pg.4282]

Dibutyl phosphite Dioctyl (2-ethylhexyl) phosphite 2-Mercaptobenzimidazole 4 and 5-Methylmercaptobenzimidazole Octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate Phenol, 4,4 -thiobis 2-(1,1-dimethylethyl) phosphite Sodium 2-mercaptobenzothiazole Thiodiethylene bis (3,5-di-t-butyl-4-hydroxy) hydrocinnamate Zinc disodium ethylene diamine tetraacetate deactivator, metals crude oil distillates N,N -Di-s-butyl-p-phenylenediamine deactivator, metals engine/industrial oils/greases... [Pg.5051]

Dibutyl maleate Di-t-butyl peroxide 2,4-Di-t-butylphenol 2,6-Di-t-butylphenol Dibutyl phosphite... [Pg.5386]

L-methionine source, food N-Acetyi-L-methionine ioad-carrying additive Dibutyl phosphite Dioctyl (2-ethylhexyl) phosphite... [Pg.5428]

Diamyl oxalate Dibutylamine Dibutyl oxalate Dibutyl phosphite Dibutyltin P-mercaptopropionate Dichlorofluoroethane Dichlorofluoromethane 1,1-Dichloro-1-nitroethane... [Pg.5682]

Tri-n-octyl phosphate 1808-26-0 Ethyl arachidonate 1809-19-4 Dibutyl phosphite Duraphos DBHP. [Pg.6194]

Di hydroxybiphenyl 217-316-1 Dibutyl phosphite Duraphos DBHP. Syn-O-Ad P-316 217-325-0 AMMONYX D34 AMMONYX D34PPG Carsoquat 868 Carsoquat 868-E Carsoquat 8681 Carsoquat 868P Dicetyidimonium chloride Jeequat 868-P Pentonium D6-50 Protaquat 868-P Varisoft 432-100 217-329-2... [Pg.6825]

Ethoprop C8Hig02PS3 Disulfoton CgHigOgP Dibutyl phosphite C8H19O4P... [Pg.7059]

Phosphorous acid diesters. Di- -butyl phosphorochloridate added in small portions to a highly dispersed, stirred suspension of NaBH4 in dioxane, refluxed for 5 h, cooled, water added cautiously, and acidified to pH < 2 with 6 M HCl - dibutyl phosphite. Y 85.4%. F.e., incl. phosphonous acid monoesters, s. R. Engel, S. Chakraborty, Synth. Commun. 18, 665-70 (1988). [Pg.23]

Sodium dibutyl phosphite on the other hand cleaves both di- and... [Pg.210]

Ctolonaldehyde Cumene Cyctoheiane Oracelone Dibutyl Phosphite Oibutyl Phthalate Dichloroethane Dichloropentane Diesel Oil Diethylbenrene Oiethyleneglycol Diethyl Sullate Dimethyl Phthalate Dioiane Dipentene Diphenyl Dowtherms EtherDielhyl Ether Petroleum Ethyl Acetate Ethyl Alcohol Ethyl Benrene Ethyl Chloride Ethyl Mercaptan Ethyl Sullate Ethylene... [Pg.789]

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