Mechanism of oxidations with

The mechanism of oxidation with chromic acid has been the object of much study. The pioneering efforts of Westheimer and his group have resulted in the postulation of the mechanism shown in the reaction sequence below... 

The mechanism of oxidation with acid dichromate has been intensely studied. 

The mechanism of oxidation with acid dichromate has been intensely studied.98 The currently accepted mechanism is essentially that proposed by Westheimer." The first two steps constitute an example of category 4 (p. 1160). 

Free-radical (chain) mechanism of oxidation with hydrogen peroxide. 

Mechanism of oxidation with potassium monopersulfate-metallopor-phyrin systems 92NJC203. 

Kwart, H., Starcher, P. S., Tinsley, S. W. Mechanism of epoxidation of olefins and further possible applications of the 1,3-dipolar mechanism of oxidations with peroxy acids. Chem. Commun. 1967, 335-337. 

Unfortunately, all these catalysts seem to deactivate rapidly (43). Given the improved catalytic results obtained by MePcY prepared according to the metallocene method, it seems adviseable to reexamine the present results with materials prepared according to this method. Steps in the mechanism of oxidation with dioygen are viewed as follows (43) i, the transfer of an electron from Co(ll) to dioxygen and formation of 02 ii, the reduction of the Co(lll) complex thus formed with the substrate (R) and formation of a radical R- and iii, the stepwise oxidation of R- via peroxide species. 

Taube H. Mechanisms of oxidation with oxygen. J Gen Physiol 1965 49 29-50. 

More information can be found in the reference Taube, El., "Mechanisms of Oxidation with Oxygen," The Journal of General Physiology, Vol. 49, No. 1,1965, pages 29 to 50. This article can be downloaded for free at httpYA/vww.ncbi.nIm.nih. gov/pmc/artides/PMC2195455/pdf/29.pdf. 

The mechanism of oxidation with chromic acid has two main steps (Mechanism 13.8). The first step involves formation of a chromate ester, and the second step is an E2 process to form a carbon-oxygen it bond (rather than a carbon-carbon Tt bond). 

Barbaux, Y., Elamrani, A., and Boimelle, J.-P. Catalytic oxidation of methane on Mo03-Si02 mechanism of oxidation with O2 and N2O studied by surface potential measurements. Catal. Today 1987,1, 147-156. 

Fabbrini, M., C. Galli, and P. Gentili. 2002. Radical or electron-transfer mechanism of oxidation with some laccase/mediator systems. J. Mol. Catal. B-Enzym. 18 169-171. 

The mecha nism of high-energy-induced degradation in an oxidative medium is a free radical one, similar to the general mechanism of oxidation, with only the specific initiation step [44, 46, 56, 57] (see above). 

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