Singlet oxygen hypochlorite

Singlet oxygen has also been proposed and this can indeed be formed, particularly in mixtures of hydrogen peroxide and sodium hypochlorite. However, carefully designed experiments showed that under these conditions sodium hypochlorite has neither a direct... 

In the case of chemiluminescence occurring on treatment of di-benzanthrone with hypochlorite, as mentioned above, an endo peroxide might well be a key intermediate formed from 4 and singlet oxygen. The emitting species, however, is trichloro-dibenzanthrone, not 4 itself 70h... 

Singlet oxygen can be produced chemically as well as by photochemical sensitization. There are several chemical methods available, one of the best known being the reaction of sodium hypochlorite with peroxide ... 

Benzene oxide (86), on reaction with singlet oxygen generated either from hypochlorite-hydrogen peroxide or ozone-triphenyl phosphite, forms peroxide 87 in 37% yield. This peroxide on heating in chloroform is quantitatively isomerized to anti-benzene trioxide (42)46 The endoperoxide 88 is similarly... 

Excited singlet oxygen generated in situ by oxidising hydrogen peroxide with sodium hypochlorite, produces results chemically indistinguishable from photo-sensitised auto-oxidation of olefins [70]. 

Conjugated dienes (and compounds that behave like conjugated dienes in the Diels-Alder reaction) react with singlet oxygen to form cyclic peroxides as if molecular oxygen acted as a dienophile. The yields of the peroxides, prepared by photochemical oxidation [13, 55] or by chemical oxidations with hydrogen peroxide and sodium hypochlorite, alkaline hydrogen peroxide and bromine, alkaline salts of peroxy acids [14, 26], or the ozonide of triphenyl phosphite [29], are comparable. 

The thermal generation of singlet oxygen from hydrogen peroxide and hypochlorite presumably involves the chloroperoxy anion other synthetically useful examples involve decomposition of phosphite ozonides or endoperox-ides, as indicated in Scheme 67 (cf. Murray, 1979). 

HH Nknz and G Turznik. Reactions of Lignin with Singlet Oxygen. I. Oxidation of Monomeric and Dimeric Model Compounds with Sodium Hypochlorite Hydrogen Peroxide. Cell Chem Technol 14 727-742, 1980. 

Singlet oxygen 102(I g) is obtained by reacting active chlorine contained in sodium and calcium hypochlorites with hydrogen peroxide [Refs. 20, 23, 26, 108,109, 222, 223]... 

In this expression, Y102 is the yield of singlet oxygen produced from a given amount of hypochlorite, and the other terms have the same meaning as stated previously. 

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