Peroxybenzoic esters

Peroxybenzoic Acid,- 9-Fluorenylidene Ester. See 9,9, -Bis(Benzoylperoxy)-F luorene in Vol 2, B135-R... 

Malonic acid, amino-, diethyl ester, HYDROCHLORIDE, 40, 24 Malonic acid, bts(hydroxymethyl)-, DIETHYL ETHER, 40, 27 Malonitrile, condensation with tetra-cyanoethylene, 41, 99 2-Mercaptopyrimidine, 43, 6S hydrochloride of, 43, 68 Mercuric oxide in preparation of bromo-cyclopropane, 43, 9 Mesityl isocyanide, 41,103 5-Methallyl-l,2,3,4,5-pentachlorocyclo-pentadiene, 43, 92 Methane, dimesityl-, 43, 57 Methanesiileinyl chloride, 40, 62 Methanesulfonic acid, solvent for making peroxybenzoic acid from benzoic acid, 43, 93... 

Ethyl trifluoroacetate Acetic acid, trifluoro-, ethyl ester (8,9) (383-63-1) m-Chloroperoxybenzoic acid Peroxybenzoic acid, m-chloro- (8) Benzocarboperoxoic acid, 3-chloro- (9) (937-14-4)... 

Di(p-ni trobenzoperoxy )-2,5-dimethyl-hexane or Peroxybenzoic Acid, p-Nitrol-1,1,4,4-tetrametbyItetramethylene Ester. 

Peroxybenzoic Acid, p-Nitrofluorenylidene Ester. See 9,9 -Bis(p-nitrobenzoylperoxy)-fluorene in Vol 2, pp B135-R B136-L... 

Trifluoroacrylonitrile can be epoxidized by oxygen with 1,1,2-trichlorotrifluoroethane (CFC-113) as a solvent under pressure at elevated temperatures in moderate yield (Table 2).77 Substituted peroxybenzoic acids are used for the epoxidation of trifluorovinyl alkenes with attached functionalities such as ester, amide or dimethoxyphosphoryl groups (Table 2).7S Functional derivatives of perfluoro-2-methylprop-2-enoic acid are oxidized to the corresponding epoxy compounds in this reaction.78 In the case of ethyl ester 40, the epoxide 41 is contaminated with the adduct of 3-chloroperoxybenzoic acid to the C = C bond, compound 42, that is formed even at low temperatures.78... 

Bis(benzoylperoxy) 2,5 dimethyl hexone(c ailed Peroxybenzoic Acid, 1,1,4,4-Tetrametbyl-tetramethylene Ester in CA Formula Index for... 

Bis(p nitrobenzoylperoxy) fluorene or 9,9-Di-(p-nitrobenzoperoxy)-fluorene (called Peroxybenzoic Acid.p-Nitrofluorenylidene Ester in CA Formula Index for 1950),... 

Butyl Ester of Peroxybenzoic Acid. Same as Butyl Peroxybenzoate... 

Computational studies showed that the nature of the reactive species in the oxidation of trimethylamine, iodide ion, and dimethyl sulfide with lumiflavin is a C4 a-hydroperoxide complexed with water. The other two species, C4 a-hydroperoxide and C4 a-peroxide, yielded higher activation energies.237 Kinetic and spectroscopic studies on the effect of basic solvents, ethers, esters, and amides, on the oxidation of thianthrene-5-oxide with substituted peroxybenzoic acids indicated the involvement of the basic solvent in the transition state of the reactions. A solvent parameter, Xtc, based on the ratio of the trans to the cis form of thianthrene-5,10-dioxide, has been introduced.238... 

Baeyer-Villiger oxidation is a ketone oxidation, and it requires the extremely strong oxidizing agent peroxybenzoic acid. For example, peroxybenzoic acid oxidizes phenyl methyl ketone to phenyl acetate (an ester). 

Peroxycarbonic acid esters play a most important role in vinyl, ethylene and styrene polymerizations. In particular, mixtures of the tert-butylesters of the peroxybenzoic acids and the peroxyaliphatic fatty acids are used. 

Residual monomers in the latex are avoided either by effectively reacting the monomers to polymer or by physical or chemical removal. The use of tert-butyl peroxypivalate as a second initiator toward the end of the polymerization or the use of mixed initiator systems of K2S2Og and tert-butyl peroxybenzoate (56) effectively increases final conversion and decreases residual monomer levels. Spray devolatilization of hot latex under reduced pressure has been claimed to be effective (56). Residual acrylonitrile also can be reduced by postreaction with a number of agents such as monoamines (57) and dialkylamines (58), ammonium—alkali metal sulfites (59), unsaturated fatty acids or their glycerides (60,61), their aldehydes, esters of olefinic alcohols, cyanuric acid (62,63), andmyrcene (64). 

Allylic esters result from the reaction of alkenes with itri-butyl per-oxyacetate [233], or the more reactive peroxybenzoate [233, 234, 1113], in the presence of cuprous bromide with mercuric acetate [404, or with lead tetraacetate [1114] (equation 127). 

Oxidations of aromatic aldehydes to formyl esters of phenols and to phenols are accomplished by hydrogen peroxide [171, 172, 173] or by organic peroxy adds such as peroxyacetic acid [259], peroxybenzoic acid [302], and m-chloroperoxybenzoic acid [5/5, 318] (equations 360-363). 

Cyclohexyl phenyl ketone oxidized by peroxybenzoic acid in chloroform at 24-26 °C for 239 h furnishes an 85% yield of esters, of which 71% is cyclohexyl benzoate and 14% is phenyl cyclohexanecarboxylate. This result shows that the migratory aptitude of the cyclohexyl group is 5 times greater than that of the phenyl group [304]. 

Similar oxidants are used for epoxidation of esters of unsaturated carboxylic acids. Methyl oleate is oxidized with peroxybenzoic acid [295] or peroxylauric acid [174] to methyl 9,10-epoxystearate acid in respective yields of 67 and 76%. Alkaline 50% hydrogen peroxide in methanolic solution transforms diethyl ethylidenemalonate at pH 8.5-9.0 and at 35-40 C over a period of 1 h into ethyl 2-ethoxycarbonyl-2,3-epoxybutyrate in 82% yield [145], A somewhat exotic oxidizing agent, dimethyldioxirane, converts ethyl tra/u-cinnamate into ethyl 2,3-epoxyhydrocinnamate in 63% isolated yield [210]. 

Oxidation of Ketones to Esters (Baeyer-Villiger Reaction) with Peroxybenzoic Acid [305]... 

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