Phosphoryl chloride oxychloride

Thiazole carboxamides are readily dehydrated to nitriles in good yields by heating with phosphorus oxychloride (91), phosphorus pentoxide (87, 71), or phosphoryl chloride (16) (Scheme 19). [Pg.530]

Phosphate protection may begin at the stage of phosphoryl chloride (phosphorus oxychloride). A protective group may be introduced by reaction of this... [Pg.664]

Phosphoric acid, 100 Phosphorus oxychloride (Phosphoryl chloride], 4... [Pg.143]

No details are given for scheme A. Presumably one could use the phosphoryl chloride instead of the fluoride. Scheme B, in which ethyl chloride is formed, was run in boiling xylene using equimolar quantities of the reactants. Michaelis (33) has partially described the preparation of starting materials from secondary amines with phosphorus oxychloride and also ethyl dichlorophosphate. Schrader (38) obtained alkyl and amido fluophosphates by reaction of the corresponding chlorophosphates with sodium fluoride in aqueous or alcoholic solution. [Pg.157]

Phosphorus oxychloride Highly Toxic Phosphoryl chloride (8,9) (10025-87-3) Triethylamine (8) Ethanamine, N,N-diethyl- (9) (121-44-8)... [Pg.205]

One criticism of the solvent system concept is that it concentrates too heavily on ionic reactions in solution and on the chemical properties of the solvent to the neglect of the physical properties. For example, reactions in phosphorus oxychloride (= phosphoryl chloride) have been systematized in terms of the hypothetical autoionization ... [Pg.173]

When methyl 4,6-benzylidene-2-desoxy-a-D-galactoside (LXXXVI)126 was treated with phosphorus oxychloride in pyridine at —40°, followed by barium hydroxide,236 it gave amorphous barium methyl 4,6-benzyli-dene-2-desoxy-a-D-galactoside 3-phosphate (LXXXVII). If diphenyl-phosphoryl chloride [diphenylchlorophosphonate, (PhO)2POCl]236 240 in pyridine was used as the phosphorylating agent, then crystalline (methyl... [Pg.101]

A drum of phosphoryl chloride, recovered by distillation, burst some ten hours after filling. The line and pump used for transfer had been cleaned with acetone, pockets of which probably remained. Calorimetry revealed that, starting at 30°C, unmixed and unstirred acetone and oxychloride (molar ratio not reported) heated slowly to 55°C over two hours and thereafter ran-away to 180° and substantial pressure in a few minutes. It was concluded that acetone was the cause of the mishap, and probably of some other incompletely explained prior accidents (see below) [1], An earlier accident on laboratory scale had also been both reported and thermally investigated [2]. See Acetone... [Pg.1504]

Diethyl monochlorophosphate has been prepared by the reaction of triethyl phosphate with phosphorus(V) oxychloride, by treating diethyl phosphite with sulfuryl chloride,1 from diethyl phosphite and carbon tetrachloride in the presence of a tertiary amine,2 from ethanol and phosphoryl chloride in a medium of pyridine and benzene,3 and by the chlorination of diethyl phosphite.4,5 The last procedure is simple and gives good yields. [Pg.78]

Phosphorus oxychloride (also called phosphoryl chloride) 10025-87-3 1,000... [Pg.132]

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