Peroxo acids

Formal substitution of an 0—0 group for a single oxygen atom in an oxygen acid yields a peroxy acid, or peroxo add (p. 78). 

Although the -oxo portion of the name is sometimes omitted by chemists in speaking of such acids (for example, peracetic acid, potassium persulfate ), this usage is not recommended since it may confuse a peroxy acid with an acid in which the central atom has an oxidation state two units higher than the ic acid  

Conversely, the name peroxide should be reserved for compounds having 0—O bonds and not applied merely to designate a higher oxide of an element the names nitrogen peroxide (for N02) and lead peroxide (for Pb02) are thus incorrect. 

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Perbenzoic acid, 3-chloro- [Benzenecarbo-peroxoic acid, 3-chloro ], 1 Peroxydisulfunc acid ([ (HO)S(0)2120, ), diammonium salt, 69 Z Phe.Gly-OEt [Glycine,TV [TV [(phenyl-... 

Alternatively m-chloroperbenzoic acid (3-chlorobenzenecarbo-peroxoic acid) may be used.4... 

A number of lower sulfur oxides have been described. Most of these oxides are derived from cyclic sulfur polymorphs and were usually prepared by oxidation of these molecules by organic peroxo acids. The oxides have the general formula SraO and n may vary from 5 to 10. For n = 7 even the dioxide S702 is known.4 Not all of these phases were characterized by X-ray diffraction, but the molecular structures are certain with respect to vibrational spectroscopy. The oxygen atom is in exo position with respect to the sulfur ring as it has been shown by X-ray diffraction for SgO and S70, respectively (Figure 2).5,6... 

Peroxoic acid (Poppins, Sundquist) 80-100% formic acid and hydrogen peroxide None 70-80°C 60 min ... 

Many organic peroxides and hydroperoxides are known.30 Peroxo carboxylic acids (e.g., peroxoacetic acid, CH3CO OOH) can be obtained by the action of H202 on acid anhydrides. Peroxoacetic acid is made as 10 to 55% aqueous solutions containing some acetic acid by interaction of 50% H202 and acetic acid, with H2S04 as catalyst at 45 to 60°C the dilute acid is distilled under reduced pressure. It is also made by air oxidation of acetaldehyde. The peroxo acids are useful oxidants and sources of free radicals [e.g., by treatment with Fe2+(aq)]. Dibenzoyl peroxide, di-r-butyl peroxide, and cumyl hydroperoxide are moderately stable and widely used as polymerization initiators and for other purposes where free-radical initiation is required. 

Several acidic oxides such as M0O3, WO3 and compounds of selenium, arsenic and boron are effective catalysts for the epoxidation of alkenes by H2O2 through generation of inorganic peroxo acids, such as peroxoselenic and peroxoarsonic acids. ... 

In addition to the products for which results are shown in Figure 3, 4-Oxo-but-2-enoic acid and 4-Oxo-but-2-eneperoxoic acid are predicted by MCMv3.1 to be major products in the NOx free conditions of this experiment but were not observed. An unattributed carbonyl absorption was fotmd in the FTIR spectra (Thuener et al, 2003) but the absorption frequency of this tmknown does not correspond to that expected for a conjugated carboxylic or peroxoic acid. 

C5F10O3 carbonfluorido-peroxoic acid, 2,2,2-Trifluoro-l,l-Ws(trifluoromethyl)-ethyl ester 64957-47-7... 

Beilstein Handbook Reference) AI3-06625 Aztec t-Butyl Perbenzoate Benzenecarbo-peroxoic acid, 1.1-dimethylethyl ester Benzoyl tert-butyl peroxide BRN 1342734 t-Bulyl perbenzoate t-Butyl peroxy benzoate terc.Butylester kyseliny peroxy-benzoove terc.Butylperbenzoan tert-Butyl perbenzoate tert-Butyl peroxybenzoate CCRIS 6217 Chaloxyd tbpb EINECS 210-... 

There are a great variety of inorganic peroxo compounds where —O— is replaced by —O—O— groups. Some of these are discussed elsewhere in this book. Typical are peroxo anions such as peroxo sulfates (14-IX) and (14-X). All peroxo acids yield H2Oz on hydrolysis. Peroxodisulfate, as the... 

Syntheses of 2,3,5-trimethylquinone, a key product in the fabrication of tocopherol, as well as of vitamin K3 (2-methyl-1,4-naphthoquinone) using this method are of practical importance. Peroxo-acid oxidation models xenobiotic oxidation by means of monooxygenase. Peroxo-acid oxidation of 1,2,4-trimethylbenzene (pseudocumene) to trimethylquinone using peracetic acid also yields acetic acid, which reduces the price of the products obtained (Eq. (12-26)). 

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