KHSOs

K2CO2 and K salt solutions absorb SO2 forming K SO which is converted to thiosulfate, KHSO which is converted to H2S, and regenerates K CO. ... 

KHSO KHSO K SO, hence the name. It has also been described as a mixture of the three salts, which it is not. The formula should be written ia the more general form as K (HSO )2(HSO (SO. The crystal stmcture is disordered and not fiiUy estabHshed, but reports on it have appeared (69,70). The presence of the hydrogen monoperoxosulfate ion HSO ia the crystal is also mentioned. 

Potassium hydrogen monoperoxosulfate monohydrate [14696-73-2] KHSO 20, related to the triple salt, is not made commercially. The crystal stmcture has been determined and some features of its Raman and ir spectra recorded (69). This compound is more stable under x-rays than the triple salt. The 0—0 distance is 0.1460 nm. The dihedral angle of the 0—0 moiety is about 90°, similar to that ia soHd hydrogea peroxide. This compouad is reported as toxic and irritating to eyes, skin, and mucous membranes (2). Although undoubtedly correct, this description probably better relates to the triple salt. 

In the late 1970s, evidence showed that diaLkyl dioxiranes were generated in ketone—caroate, 2KHSO KHSO K SO, systems (106) and the mechanism of the reaction was determined (88,90) ... 

Nitroso compounds are formed selectively via the oxidation of a primary aromatic amine with Caro s acid [7722-86-3] (H2SO ) or Oxone (Du Pont trademark) monopersulfate compound (2KHSO KHSO K SO aniline black [13007-86-8] is obtained if the oxidation is carried out with salts of persulfiiric acid (31). Oxidation of aromatic amines to nitro compounds can be carried out with peroxytrifluoroacetic acid (32). Hydrogen peroxide with acetonitrile converts aniline in a methanol solution to azoxybenzene [495-48-7] (33), perborate in glacial acetic acid yields azobenzene [103-33-3] (34). 

Cristobahte can also form on vitreous siUca at temperatures as low as 400°C when the pressure is equal to 35 MPa (<350 atm) and the glass is immersed in weak NaOH solutions (108). In stronger NaOH solutions, quart2 is formed. The formation of the crystalline phases is a result of the hydrolysis of the anions present. No crystallisation occurs with HF, H2SO4, and H PO in KHSO solutions or in pure water. 

Bromide ndIodide. The spectrophotometric determination of trace bromide concentration is based on the bromide catalysis of iodine oxidation to iodate by permanganate in acidic solution. Iodide can also be measured spectrophotometricaHy by selective oxidation to iodine by potassium peroxymonosulfate (KHSO ). The iodine reacts with colorless leucocrystal violet to produce the highly colored leucocrystal violet dye. Greater than 200 mg/L of chloride interferes with the color development. Trace concentrations of iodide are determined by its abiUty to cataly2e ceric ion reduction by arsenous acid. The reduction reaction is stopped at a specific time by the addition of ferrous ammonium sulfate. The ferrous ion is oxidi2ed to ferric ion, which then reacts with thiocyanate to produce a deep red complex. 

Iron oxides are stable pigments iasoluble ia most solvents but usually soluble ia hydrochloric acid. Those not soluble ia HCl can be fused with potassium hydrogen sulfate, KHSO, and then dissolved ia water. 

A modern reagent, that has found increased application, is dimethyldioxirane it is prepared in situ by oxidation of acetone with potassium peroxomonosul-fate KHSOs. ... 

Peroxomonosulphate and peroxodisulphate have also been used to oxidize sulphoxides to sulphones in good yields at room temperature. Potassium persulphate (KHSO 5) readily oxidizes a range of sulphoxides to sulphones at 0 °C in yields greater than 90%, in the presence of hydroxy, keto and alkene groups . The mechanism is similar to that observed for other peroxy species, as discussed above. Peroxomonosulphate oxidation has been used as an analytical procedure for the estimation of dimethyl sulphoxide . ... 

Enhanced stereoselectivity has been found using IBr, which reacts at a lower temperature.81 (Compare Entries 6 and 7 in Scheme 4.4.) Other reagent systems that generate electrophilic iodine, such as KI + KHSOs,82 can be used for iodocyclization. 

It furnishes 47% of its weight as oxidant, which is much more than other common oxidants such as NaClO, KHSOs, and ROOH. 

Methyl 5-vinylsalicylate was prepared as shown in Scheme II (3). Friedel-Crafts acetylation of methyl salicylate gave the 5-acetyl derivative in 80% yield. Blocking of the phenol followed by NaBH reduction then provided methyl 5-(1-hydroxyethyl)acetyl-salicylate in an overall yield of 70%. The hydroxyethyl compound was dehydrated over KHSO at 225°C/0.2 mm, and the... 

The alkene (5 mmol) and the chiral trifluoroketone, e.g. (+)-3-trifluoroacetylcamphor (4-6 mmol) in CH2C12 (50 ml) are added to aqueous phosphate buffer (pH 7.5, 50 ml), TBA-HS04 (15 mg, 0.04 mmol) and EDTA-Na2 (15 mg). The mixture is stirred at room temperature and aqueous KHSOs (0.6 M, 20 ml) is added slowly over 30-60 min while the pH 7.5 is maintained by the addition of aqueous KOH (1 M). Oxone (15 g) is added over 24 h at room temperature and pH 7.5. The reaction is monitored by GLC and more Oxone is added, if necessary. When complete, the reaction mixture is filtered and the aqueous phase is separated and extracted with CH2C12 (2 x 25 ml) and Et20 (2 x 20 ml). The combined organic solutions are dried (MgS04) and evaporated to yield the oxirane [e.g. 82% l( ,2/ -oxirane from /ran.v-PhCH=CHMe (ee 13%)]. 

GPRT- defective cells appear in population. Using the method of the selective pressure by 5-BDU and 8-Ag, the mutant cultures of cells, defective by the indicated enzymes, are obtained. The intraspecific and interspecific hybrid cultures of cells are firstly obtained in the laboratory of the cellular biotechnology, A4H (SPEV TK- x lymphocytes of horse) and others. Hybrid cultures possess the unique properties. They are the ability to grow in the monolayer and in suspension, the high sensitiveness to the viruses. Hybrid cultures PO-TK-KHLO, PO-TK-KHSO are sensible to the agent scrappy, what allows using them for the study of diseases, caused by prions. 

Dimethyldioxirane is a powerful oxidant prepared by reacting acetone with KHSOs the latter is commercially available as a triple salt under the trade name of oxone. 1,4-Dinitrocubane... 

Bicyclopropylidene (1) readily reacted with photochemically generated singlet oxygen at 30-35°C to give spiro[2.3lhexan-4-one (203) and 7-oxadi-spiro [2.0.2.1]heptane (202) [104,1411. Bicyclopropylidene epoxide 202 can also be prepared by epoxidation of 1 with m-chloroperbenzoic acid in the presence of Na2C03 [141] or with KHSOs/acetone [74]. Bicyclopropylidene (1) was found to quench the fluorescence of 9,10-dicyanoanthracene [81]. 

Oxone is a registered trademark of DuPont with potassium peroxymonosulfate KHSOs (potassium monopersulfate) as oxidizing ingredient of a triple salt with the formula... 

Also, the compound can be prepared by adding potassium hydrogen sulfate, KHSO to an electrolyzed solution of ammonium hydrogen sulfate, NH4HSO4... 

The synthetically most useful method for the preparation of dioxiranes is the reaction of appropriate ketones (acetone, trill uoroacetone, 2-butanone, cyclohexanone etc.) with Caroate, commercially available as the triple salt of potassium monoperoxysul-fate (KHSOs). The catalytic cycle of the dioxirane formation and oxidation is shown in Scheme 1 in general form. For acetone as the ketone, by simple distillation at a slightly reduced pressure ca 100 torr) at room temperature ca 20 °C), Jeyaraman and Murray successfully isolated dimethyldioxirane (DMD) as a pale yellow solution in acetone (maximally ca 0.1 M). This pivotal achievement in 1985 fomented the subsequent intensive research activity in dioxirane chemistry, mainly the synthetic applications but also the mechanistic and theoretical aspects. The more reactive (up to a thousandfold ) fluorinated dioxirane, methyl(trifluoromethyl)dioxirane (TFD), was later isolated in a similar manner by Curd, Mello and coworkers". For dioxirane derived from less volatile ketones, e.g. cyclohexanone, the salting-out technique has been developed by Murray and coworkers to obtain the corresponding dioxirane solution. 

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