Phosphorous trichloride

Reaction between pentaerythritol and phosphorous trichloride [7719-12-2] yields the spkophosphite, 3,9-dichloro-2,4,8,10-tetraoxa-3,9,-diphosphaspii o[5,5]-undecane [3643-70-7] C HgCl20 P2,... 

Phosphorous oxychloride Phosphorous pentachloride Phosphorous trichloride... 

In a first step, the carboxylic acid 1 is converted into the corresponding acyl chloride 2 by treatment with thionyl chloride or phosphorous trichloride. The acyl chloride is then treated with diazomethane to give the diazo ketone 3, which is stabilized by resonance, and hydrogen chloride ... 

Nitroisobutylglycerin (2-Nitro -2-me thylol-1,3-propanediol, 2-Nitro-2-oxymethyl-l, 3-propanediol). 02N.C(CH20H)3, mw 151.12, N 9.26%, OB to C02 79.4%, mp 144—180°. Note According to Beil 1, [596] it exists in two modifications, one melting (not sharply) at 144°, and the other at 180°. The second form is obtained by treating the first form with either sulfuryl-chloride or phosphorous trichloride. After ciystn from ethyl acetate chlf, a substance is obtained which melts sharply at 180°. On standing, the second form slowly reverts to the low melting modification. It is usually found in the form of needles and crysts, and is sol in w, ale and eth... 

But neutralized phosphorous acid monoesters of alcohols were found to have detergent and plasticizing properties [60,74]. They can be obtained by reaction of phosphorous trichloride and fatty alcohols in equimolar ratios followed by saponification of the unreacted chlorine atoms of the dichlorophosphites with a base see Eqs. (26) and (27). 

An interesting reaction between iV-methyleneglycinonitrile 28 and phosphorous trichloride proceeded at low temperature under anhydrous conditions to form the glyphosate nitrile intermediate 40 as its hydrochloride salt (48). However, when the reaction was conducted in the presence of water, the glyphosate amide 41 was generated instead. Either intermediate 40 or 41 could be hydrolyzed di tly to glyphosate under acidic conditions (49). 

A. 2,2-Dichloronorbornane. A 1-1., round-bottomed flask equipped with a mechanical stirrer and a calcium sulfate drying tube is charged with 91.3 g. (0.665 mole) of phosphorous trichloride and 90.0 g. (0.817 mole) of norcamphor (Note 2). The solution is stirred and cooled to 0° in an ice-salt bath, then 193 g. (0.927 mole) of phosphorous pentachloride is added in portions... 

The last reaction is the most favored of these three. The actual occurrence of the reactions with elemental phosphorus or phosphorous trichloride as products has been explained to be due to kinetic reasons. The thorium present in the ore volatilizes in the form of thorium tetrachloride (ThCl4) vapor other metallic impurities such as iron, chromium, aluminum, and titanium also form chlorides and vaporize. The product obtained after chlorination at 900 °C is virtually free from thorium chloride and phosphorous compounds, and also from the metals iron, aluminum, chromium, and titanium. 

Benzaldehyde (A) reacts with phosphorous trichloride (B) in benzene solution to form an addition compound (C),... 

More recently, the chiral phosphonate 85 has been used as a CDA with chiral amines to form diastereomeric phosphonic amides (86)79 which are analyzed by 31P-NMR spectroscopy for the determination of enantiomeric ratios. The reagent is readily prepared from (5)-2-butanol and phosphorous trichloride, and all a-amino acids and amines thus far examined react quantitatively in a few hours at room temperature in aqueous ethanol79. 

The nse of Raman spectroscopy to monitor the reaction of chlorine gas and elemental phosphorous to produce phosphorous trichloride was first reported in 1991 and has been extensively described in patents and journals [67,89-93]. AFT-Raman spectrometer was selected to minimize fluorescence, but signal was... 

Isoflurophate Isoflurophate, the di-wo-propyl ester of fluorophosphoric acid (13.2.21), is made by reacting Mo-propyl alcohol with phosphorous trichloride, forming di-wo-propy-Iphosphite (13.2.19), which is chlorinated to (13.2.20), and further reacted with sodium fluoride to replace the chlorine atom with fluorine, thus giving isofluorophate (13.2.21) [50]. 

Gugot Mixture—same as above, but replacing the chloro-sulfuric acid with the bromo-sulfuric Sophronius Mixture consisted of 3 parts of concentrated H2S04 and 2 parts of KMn04 In addition to these mixtures, it was proposed to use phosphorous trichloride, which catches fire on contact with either ammonia or ammonium hydrosulfide, NH4 HS... 

Sodium hydroxide, Nitromethane, Chlorine gas, Calcium chloride Phosphorous trichloride, Aluminum chloride, Methyl chloride, Methylene chloride, Hydrochloric acid, Isopropyl alcohol, Toluene, Pyridine, Calcium chloride Sodium cyanide, Carbon tetrachloride, Ethyl alcohol, Chlorine gas... 

Phosphorus trichloride. Aluminum chloride. Methyl chloride. Hydrochloric acid. Hydrofluoric acid, Cyclohexanol, Silica gel. Isopropyl ether Phosphorus trichloride. Aluminum chloride. Methyl chloride. Hydrochloric acid. Sodium fluoride, Cyclohexanol, Silica gel. Isopropyl ether. Toluene Phosphorous trichloride. Methyl disulfide. Methyl iodide. Toluene, Sodium fluoride. Isopropyl alcohol... 

QUINAPHOS ligands are usually synthesized in a one-pot-procedure from readily available 8-substituted quinolines [8] via nucleophilic addition of a lithium reagent [9] to the azomethinic double bond and direct quenching of the resulting 1,2-dihydroquinoline amide 1 with a phosphorochloridite derived from enantio-merically pure binaphthol (1) or from 3,3 -di-t-butyl-5,5 -dimethoxybiphenyl-2,2 -diol (m) [10] (Scheme 2.1.5.1, Method A). Alternatively, the anion 1 can be reacted with an excess (in order to avoid multiple substitution) of phosphorous trichloride to obtain the corresponding phosphorous dichloridite 2, which can be isolated (Scheme 2.1.5.1, Method B). In a second step, 2 is converted into 4 by reaction with the desired diol in the presence of triethylamine. 

By paasbg oxygen through holliug phosphorous trichloride i—>... 

If the ethereal salts of the secondary adds of the lactic series he treated with phosphorous trichloride, the ethereal salts of the secondary adds of the acrylic series are produced —... 

Bahr.Ber 61,2178-83(1928) 63,99(1930) Phosphorus Carbide, PaCj, wh amorph ppt, which spontaneously ignites when gently warmed. Was prepd by treating an ethereal soln of acetylene-bis-magnesium iodide, MgI.C CMgI with phosphorous trichloride Refs l)Beil l,[22l] 2)E- deMahler, BullFr... 

Pauli principle, 45-47,178-182, 284-287 Pauli spin matrices, 96 P branch, 171-173,218,303 Peanuts, 320 Perpendicular band, 259, 265 Perturbation, spectroscopic, 283 Perturbation theory, 35-38,102 degenerate, 36-38 for nuclear motion, 149-159 time-dependent, 110-114 Phase, 13 Phenol, 225 Phosphorescence, 128 Phosphorous trichloride, structure of, 222, 223... 

---