Sodium nitrosodisulfonate

Selective oxidation of henzylic alcohols,l These alcohols are oxidized by Fremy s salt in benzene-water with Adogen 464 as the phase-transfer catalyst to aldehydes or ketones in generally high yields. Ally lie alcohols are completely stable under these conditions. See also sodium nitrosodisulfonate (this volume). [Pg.258]

Sodium N-methylanilide, 459 Sodium methylsulfinylmethylide, 195-196 Sodium naphthalenide, 349-350 Sodium nitrite, 459-460 Sodium nitrosodisulfonate, 411 Sodium orthophosphate dodecahydrate, 309 Sodium perborate, 59 Sodium phenanthrenide, 375 Sodium phenoxide, 352 Sodium phenoxides, 86 Sodium sulfide, 77,460-461 Sodium sulfite, 91 Sodium tetraborate, 461 Sodium tetracarbonylferrate(-Il), 461-465 Sodium tetraphenylborate, 81 Sodium thiocyanate, 7 Sodium thioethoxide, 465 Sodium thiophenoxide, 314,460 Sodium thiosulfate, 466 Sommelet reaction, 243 Spiroalkylation, 213-214 Spirobutanones, 211-212 Spiro[l,3-dithiol-2,9 -fluorene], 446 Spiro-epoxy-2,4-cyclohexadienones, 373-374... [Pg.331]

A. Disodium Nitrosodisulfonate. In a 1-1. resin kettle, equipped with a mechanical stirrer, a thermometer, a gas-inlet tube suspended about 0.5 cm. above the bottom of the vessel, and an ice-cooling bath, are placed 15.0 g. (0.217 mole) of sodium nitrite (Note 1), 16.8 g. (0.200 mole) of sodium bicarbonate (Note 1), and 400 g. of ice. Sulfur dioxide (25.6 g. or 0.40 mole, Note 2) is passed into the cold, initially hetero-gcmcous mixture with stirring over a period of 40 minutes. Near the end of the sulfur dioxide addition, the light brown color of the reaction mixture fades almost completely. The resulting colorless to pale yellow solution of disodium hydroxyl-aminedisulfonato (Note 3), which has an approximate pH of 4,... [Pg.122]

Quinones can he prepared hy the oxidation of phenols, dihydroxy-henzenes, dimethoxyhenzenes and anilines. For example, 1,4-dihydroxy-henzene (hydroquinone) can he oxidized in good yield using sodium chlorate in dilute sulfuric acid in the presence of vanadium pentoxide and also hy manganese dioxide and sulfuric acid and hy chromic acid. Other reagents which convert hydroquinones to quinones include Fremy s salt [potassium nitrosodisulfonate, (KS03)2N0] and cerium(IV) ammonium nitrate [CAN, Ce(NH4)2(N03)J. [Pg.132]

Potassium permanganate. Dimethyl sulfide-Chlorine. Dimethyl sulfoxide. Dimethyl sulfoxide-Chlorine. Dimethylsulf-oxide Sulfur trioxide. Dipyridine chro-mium(VI) oxide. Iodine. Iodine-Potassium iodide. Iodine tris(trifluoroacetate). Iodosobenzene diacetate. Isoamyl nitrite. Lead tetraacetate. Manganese dioxide. Mercuric acetate. Mercuric oxide. Osmium tetroxide—Potassium chlorate. Ozone. Periodic acid. Pertrifluoroacetic acid. Potassium ferrate. Potassium ferricyanide. Potassium nitrosodisulfonate. Ruthenium tetroxide. Selenium dioxide. Silver carbonate. Silver carbonate-Celite. Silver nitrate. Silver oxide. Silver(II) oxide. Sodium hypochlorite. Sulfur trioxide. Thalli-um(III) nitrate. Thallium sulfate. Thalli-um(III) trifluoroacetate. Triphenyl phosphite ozonide. Triphenylphosphine dibromide. Trityl fluoroborate. [Pg.297]

Potassium nitronates, 950 Potassium nitrosodisulfonate, 940-942 Potassium permanganate, 713, 942-952 Potassium peroxymonosulfate. 952 Potassium persulfate, 952-954 silver-catalyzed, 954 Potassium phenoxide, 300 Potassium-sodium tartrate, 36 Potassium thiocyanate, 199, 378, 954 Potassium thiolacetate, 356,955-956 Potassium triacetylosmate, 955 Potassium triphenylmethide, see Triphenyl-methyl potassium Prednisolone, 997 21-acetate, 604... [Pg.725]