Phosphorus oxytrichloride

The development of a brown color indicates that sufl cient phosphorus oxytrichloride has been added. If the mixture remains colorless, the final product is likely to be contaminated with unreacted iV-( -tolylsulfonylmethyl)formamide. It is therefore advantageous to add more phosphorus oxjrtrichloride and continue stirring until the brown color is obtained. 

MA -Dimethylamino)phenyl]-2-ethylpropenal (5) was produced by reaction of A, A -dimethyl-aniline (/) with 2-ethyl-3-ethoxyacrolein (2) in the presence of phosphorus oxytrichloride. 

Cyclodehydration of 3-carboxymethylsulfanyl-l,2,4-triazoles 305 (R = Het, HetCH2) with a mixture of acetic acid/ acetic anhydride, or phosphorus oxytrichloride, yields 5,6-dihydrothiazolo[3,2-Z ][l,2,4]triazol-5(6//)-oncs 185 (Equation 49) <1998PHA94, 1998IJH231, 2003PS(178)2431>. 

The most common method for achieving aromatization of compounds such as 72 is with phosphorus oxytrichloride and the addition of dimethylformamide (DMF Scheme 1) (see, for example, <1996CHEC-II(7)921>, and more recently, <2004M283, 1997S567>). Reductive dechlorination of 73 with palladium on carbon in the presence of sodium hydroxide affords the corresponding heterocycle 74 (Scheme 1) <2004M283>. 

Commercial phosphorus oxytrichloride ( tout pur from UCB, Belgium) was used without purification. 

Phosphorus oxytrichloride. Ethylene dichloride, Dimethylamine, Sodium carbonate, Sodium fluoride. Ethyl alcohol. Chloroform, Petroleum ether Phosphorus oxytrichloride. Ethylene dichloride, Dimethylamine, Sodium carbonate, Sodium cyanide. Ethyl alcohol. Acetonitrile, Pyridine... 

Phosphorus oxytrichloride. Ethylene dichloride, Dimethylamine, Sodium carbonate, Sodium cyanide. Ethyl alcohol. Acetonitrile... 

Phosphorus oxytrichloride. Benzene, Neopentyl glycol, Pyridine, Petroleum ether, Ammonium fluoride... 

Nitric acid. Sulfuric acid, N-Methylhydroxy acetamide Phosphorus oxytrichloride. Benzene, Neopentyl glycol. Pyridine, Petroleum ether. Ammonium fluoride Thiophosphorus trichloride. Benzene, Neopentyl glycol. Pyridine, Petroleum ether. Ammonium fluoride Nitric acid. Sulfuric acid. Glycerol, Magnesium sulfate Anhydrous hydrazine. Cyanogen bromide. Isopropyl alcohol. Sodium nitrite. Sodium bicarbonate. Copper nitrate trihydrate. Nitric acid. Diethyl ether... 

SYNS FOSFOROXYCHLORID OXYCHLORID FOSFORECNY PHOSPHORUS OXYTRICHLORIDE PHOSPHORYL CHLORIDE... 

With phosphorus oxytrichloride and l,2-dithiol-3-ones, the first reaction step is probably the formation of a 3-(dichlorophosphoryloxy)-l, 2-dithiolium chloride (18), which isomerizes to a 3-chloro-l,2-dithiolium dichlorophos-phate (19). 

Sodium starch glycolate is a super disintegrant made from cross-linking sodium carboxymethylstarch. Cross-linking involves a chemical reaction with phosphorus oxytrichloride or sodium trimetaphosphate, or a physical... 

Starch is carboxymethylated by reacting it with sodium chloroacetate in an alkaline medium followed by neutralization with citric acid or some other acid. Crosslinking may be achieved either by physical methods or chemically by using reagents such as phosphorus oxytrichloride or sodium trimetaphosphate. 

The preferred bases include triethylamine, amidines, and guanidines. Dehydration of the carbamate has been done with phosphorus trichloride, phosphorus oxytrichloride, phosphorus pentoxide, acetic anhydride, benzenesulfonic acid anhydride, o-sulfobenzoic anhydride (2.14), or other similar compounds. 

Diffuse phosphorus oxytrichloride into the front to form n-type silicon (i.e., with an excess of electrons). 

PHOSPHORUS CHLORIDE or PHOSPHORUS OXYCHLORIDE or PHOSPHORUS OXYTRICHLORIDE... 

PHOSPHORUS OXYTRICHLORIDE (10025-87-3) Fumes in moist air. Contact with water, steam, or alcohols produces hydrochloric acid, phosphoric acid, and phosphine gas, which is pyrophoric, with possible ignition or explosion (may be a delayed reaction). Contact with air produces corrosive fumes. Violent reaction with carbon disulfide, 2,6-dimethylpyri-dine-A-oxide, dimethyl sulfoxide, ferrocene-l,U-dicarboxylic acid, pyridine, zinc powder. Reacts, possibly violently, with acids, alkali metals, alkalis, combustible materials, dimethyl formamide, organic matter, zinc powder. Incompatible with acetic anhydride, A,A-dimethyl formamide, 2,5-dimethylpyrrole, sodium. Rapid corrosion of steel and most metals, except lead, occurs in the presence of moisture. 

Synonyms/Trade Names Phosphorus chloride, Phosphorus oxytrichloride, Phosphoryl chloride ... 

Synonyms Phosphorus oxytrichloride Phosphoryl chloride Phosphoryl trichloride Trichlorophosphine oxide Trichlorophosphorous oxide... 

Palladium complexes with an heterocyclic N-containing ligand have been used in the carbonylation of aromatic nitro compounds with cocatalysts such as cyclopentadienyl halides or oxyhalides of transition metals belonging to group V e.g. CP2VCI) [168], a cyclopentadienyl halide or oxyhalide together with phosphorus oxytrichloride [169], or a 1,3-diketone derivative of vanadium [170], even also in the presenee of phosphorus oxychloride [171]. 

Dimethylformamide was distilled under reduced pressure and stored over 3A molecular sieves. Methanol was similarly stored. Ether, pentane, and 1,2-dimethoxyethane were held over sodium wire tri-ra-butylamine (TEA), pyridine, and dioxane over calcium hydride. Diphenylphosphoric acid chloride was distilled under reduced pressure prior to use, and phosphorus oxytrichloride at atmospheric pressure. All these chemicals (Merck-Darmstadt) were of analytical grade and dry. 

---