Oxone as stoichiometric oxidant

The standard conditions employed in epoxidation reactions catalysed by iminium salts involve the use of Oxone as stoichiometric oxidant, a base (2 mol equiv of Na2CO3 per equivalent of Oxone) and water/acetonitrile as solvent mixture (Scheme 5.21) the presence of water is essential for Oxone solubility. Under the reaction conditions, there are separate aqueous and organic phases it is possible that the catalyst acts as a phase transfer agent in these reactions. 

Arylpyridines underwent palladium-catalyzed regioselective oxidative homocoupling reactions through chelation assistance, using [Pd(OAc)2] as catalyst and Oxone as stoichiometric oxidant in 2-propanol as solvent (Scheme 9.48) [124], Interestingly,... 

Bifunctional catalysts 142 and 143 can be used for environmentally benign oxidation of alcohols or alkylarenes at the benzylic position (Scheme 5.44) [114], These reactions, using Oxone as stoichiometric oxidant, afford the corresponding carbonyl compounds (or carboxylic acids in the oxidations of benzyl alcohol or toluene) in high yields under mild conditions and convenient work-up. Both catalysts 142 and 143 show similar catalytic activity in the oxidation of alcohols, while catalyst 143 has noticeably higher catalytic reactivity in oxidation at the benzylic position. Furthermore, these Si02-supported bifunctional catalysts can be recovered by simple filtration and directly reused [114],... 

Scheme 1.8 Generation of dioxiranes using Oxone as stoichiometric oxidant in the epoxidation of alkenes...

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See also in sourсe #XX -- [ ]

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