Phosphorus oxychloride tribromide

Phosphine(s), chirality of, 314 Phosphite, DNA synthesis and, 1115 oxidation of, 1116 Phospholipid, 1066-1067 classification of, 1066 Phosphopantetheine, coenzyme A from. 817 structure of, 1127 Phosphoramidite, DNA synthesis and, 1115 Phosphoranc, 720 Phosphoric acid, pKa of, 51 Phosphoric acid anhydride, 1127 Phosphorus, hybridization of, 20 Phosphorus oxychloride, alcohol dehydration with. 620-622 Phosphorus tribromide, reaction with alcohols. 344. 618 Photochemical reaction, 1181 Photolithography, 505-506 resists for, 505-506 Photon, 419 energy- of. 420 Photosynthesis, 973-974 Phthalic acid, structure of, 753 Phthalimide, Gabriel amine synthesis and, 929... 

Phosphorus Tribromide Phosphorus Oxychloride Phosphorus Pentasulfide Phosphorus Pentasulfide Phosphorus Tribromide Phosphorus Trichloride... 

The aminopyrazolones 26 are converted to the corresponding bromides or chlorides (27 X = Br or Cl, R3 = H), respectively, by phosphorus tribromide or phosphorus oxychloride,37,38 whereas with acetic anhydride the acetoxyamide (27 X = OAc, R3 = Ac) is formed.38 Some of these compounds have sedative action. 

Phenyl iso-thiocyanate, 642,643 Phenylthioureas, 422, 655 Phenylurea, 644, 645 Phenylurethanos, 264 Phloroacetophenone, 727, 736 Phosgene, 185 Phosphoric acid, 189, 284 Phosphorus, detection of, 1043 Phosphorus, red, purification of, 193 Phosphorus oxychloride, 367 Phosphorus pentabromide, 489, 492 Phosphorus pentachloride, 799, 822, 974 Phosphorus pentoxide, handling of, 407 Phosphorus tribromide, 189, 492 Phosphorus trichloride, 367 Phosphorus trisulphide," 836 Phthalamide, 983 Phthalein test, 681 ... 

Chloro-l-formyl-l-cyclohexene has been prepared only by the action of phosphorus oxychloride (or phosgene) and di-methylformamide on cyclohexanone3-5 2-Bromo-l-formyl-l-cyclohexene has been synthesized by a method analogous to the above by the use of phosphorus oxybromide or phosphorus tribromide.6... 

Chlorobutanoyl chloride Phosphorus tribromide Methyl magnesium chloride ALIQUAT (phase transfer catalyst) Phosphorus oxychloride Benzoyl chloride... 

Phosphonic acid, (phthalimidomethyl)-, diethyl ester, 65, 119 Phosphorazidic acid, diphenyl ester (26386-88-9), 68,1 Phosphoric triamide, hexamethyl- (680-31-9), 66, 51, 94 Phosphorodichloridic acid, 2-chloroethyl ester, 65, 68 Phosphorous acid, triethyl ester, 65, 108.119 Phosphorus oxychloride, 66,173, 176 67,1 68, 41,162 Phosphorus tribromide (7789-60-8), 67, 210 Phthalimide, N-(bromoethyl)-, 65, 119 Phthalimide, N-(hydroxymethyl)-, 65,119 Pig liver esterase, 69, 20... 

The conversion of a carboxylic acid to its halide is usually accomplished by thionyl chloride or phosphorus halides. Phosphorus trichloride and glacial acetic acid give acetyl chloride (67%). The other product is phosphorus acid. Phosphorus pentachloride is converted to phosphorus oxychloride (b.p. 103°), from which the acyl halide is sometimes separated with difficulty. This reagent, however, finds use in the preparation of certain higher-molecular-weight halides. .. Most acyl bromides are made from phosphorus tribromide. ... 

Phosphorus, 13, 60 Phosphorus oxychloride, 12, 66 Phosphorus pentachlorlde, 12, 12 Phosphorus tribromide, 13, 20 Phosphorus trichloride, 12, 16 Phosphorus trisulfidc, 12, 72, 73 Phthalic anhydride, 11, 88 13, 10 Phthalide syntheas, 13, 10 Phthalimide, 12, 10 Phthalimide synthesis, 12, 10 p-Phthalyl chloride, symmetrical,... 

---