Potassium peroxomonosulfate

Among many other methods for epoxidation of disubstituted E-alkenes, chiral dioxiranes generated in situ from potassium peroxomonosulfate and chiral ketones have appeared to be one of the most efficient. Recently, Wang et /. 2J reported a highly enantioselective epoxidation for disubstituted E-alkenes and trisubstituted alkenes using a d- or L-fructose derived ketone as catalyst and oxone as oxidant (Figure 6.3). 

Potassium peroxomonosulfate, 14 67 Potassium peroxydisulfate, 14 292 Potassium peroxymonosulfate, 26 189 Potassium persulfate, 7 856 Potassium phosphates, 18 834-835 20 637 manufacture of, 18 854 Potassium polymetaphosphate, 18 848 Potassium products, 20 5991 Potassium pyrophosphates, 18 843 Potassium residues, 20 603 Potassium salts, 20 609... 

Phase-transfer techniques are widely used for the preparation of polymers. For example, potassium fluoride is used to produce poly(etherketone)s under phase-transfer conditions (Scheme 10.18). Use of this reagent allows the chloroaro-matics to be used as starting material as opposed to the more expensive flu-oroaromatics that are usually employed [23]. This method is suitable for the synthesis of high molecular weight semicrystalline poly(ether ketone)s, although the presence of excess potassium fluoride in the reaction mixture can lead to degradation reactions. The use of a phase transfer catalyst can allow the use of water-soluble radical initiators, such as potassium peroxomonosulfate used to promote the free-radical polymerization of acrylonitrile [24],... 

Chiral ketone-catalyzed asymmetric epoxidation has received intensive interest since the first reported by Curci et al. in 1984. The reaction is performed with oxone (potassium peroxomonosulfate) as the primary oxidant which generates the chiral dioxirane catalytic species in situ, which in turn, transfers the oxygen... 

Potassium peroxomonosulfate, 259 Titanium(IV) isopropoxide, 311 of allylic, homoallylic alcohols t-Butyl hydroperoxide-Dialkyl tar-trate-Titanium(IV) isopropoxide, 51 t-Butyl hydroperoxide-Dibutyltin oxide, 53... 

Epoxides (see also a,(3-Epoxy alcohols, etc., Glycidic acids, esters, nitriles) From alkenes by epoxidation Dimethyldioxirane, 120 Fluorine-Acetonitrile, 135 Potassium peroxomonosulfate, 259 From carbonyl compounds Alumina, 14... 

Potassium peroxomonosulfate (Oxone), 2K.HSO5-KHSO4-K.2SO4 (1), 10, 328. This persulfate was first prepared by DuPont chemists.1... 

HYDROXY CARBOXYLIC ACIDS Dicyclohexylborane a -HY DROXY-a, [J-ENONES m-Chloropcrbcnzoic acid y-HYDROXY-a,B-ENONES Potassium peroxomonosulfate. a HYDROXY ESTERS Tris(phenylthio)methyllithium. a-HYDROXY-p-KETO ESTERS ... 

EPOXIDATION Bromomethyllithium. Chloro-methyllithium. Hydro] en peroxide-So-dium tungstate. Peroxytrichloroacetimidic acid. Potassium o-nitrpbenzeneperoxysul-fonate. Potassium perOxomonosulfate. Potassium superoxide. 

Potassium Peroxomonosulfate, HKOgS Forms explosive mixtures with as little as 1% of organic matter dangerously unstable H.M. Castrantas et al, Fire and Explosion Hazards of Peroxy Compounds , ASTM Publ No 394, Phila (1965), 5... 

The composition of the oxidizing agent Oxone is 2 KHS05 KHS04 K2S04. The active component potassium monopersulfate (KHSO5, potassium peroxomonosulfate) is a salt from Caro s acid H2SO5. 

Potassium peroxomonosulfate (Oxone ) is also an effective oxidizing agent for the epoxidation of various alkenes in the presence of Mn porphyrin and a PT catalyst [79]. The biphasic epoxidation of various olefins is readily catalyzed by Co and Ni" phthalocyanines with NaClO as the oxygen donor and Bu4N" Br" as the PT agent [80]. The PTC oxidation of alkenes with NaClO is also catalyzed by square-planar Ni complexes [81-83]. 

Curd, R., Fiorentino, M., Serio, M. R. Asymmetric epoxidation of unfunctionalized alkenes by dioxirane intermediates generated from potassium peroxomonosulfate and chiral ketones. J. Chem. Soc., Chem. Common. 1984,155-156. 

Two other oxidants, potassium peroxomonosulfate and peroxodisulfate, were also tested but proved less efficient than potassium hexacyanoferrate(III). 

Polymerization of acrylonitrile using potassium peroxomonosulfate as initiator. 

---