1. Zinc peroxide as a convenient and recyclable source of anhydrous hydrogen peroxide and its application in the peroxidation of carbonyls.
- Author
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Radulov, Peter S., Mikhaylov, Alexey A., Medvedev, Alexander G., Barsegyan, Yana A., Belyaev, Evgeny S., Dmitrieva, Victoria E., Tripol'skaya, Tatyana A., Mel'nik, Elena A., Vil', Vera A., Yaremenko, Ivan A., Prikhodchenko, Petr V., and Terent'ev, Alexander O.
- Subjects
HYDROGEN peroxide ,PEROXIDES ,DRYING agents ,ZINC sulfate ,ZINC ,ORGANIC acids - Abstract
In this work, ZnO
2 was unexpectedly discovered as a friendly and renewable source of anhydrous hydrogen peroxide in the acid-catalyzed synthesis of cyclic organic peroxides from carbonyl compounds. In particular, five classes of cyclic organic peroxides, namely, γ-hydroperoxy-γ-peroxylactones, β-hydroperoxy-β-peroxylactones, bridged ozonides, bridged 1,2,4,5-tetraoxanes, tricyclic monoperoxides, and tricyclic diperoxides, were synthesized in good yields using in situ generated H2 O2 from the reaction of ZnO2 with H2 SO4 . This approach is convenient, safe, and does not require a concentrated aqueous or ethereal solution of H2 O2 . The starting ZnO2 was synthesized from zinc acetate using a 1 wt% H2 O2 solution. The reaction of zinc peroxide with sulfuric acid in an organic solvent results in the release of hydrogen peroxide and the formation of zinc sulfate, which acts as a desiccant by forming a monohydrate phase, ZnSO4 ·H2 O. The possibility of recycling zinc peroxide from zinc sulfate monohydrate with a high yield was shown. [ABSTRACT FROM AUTHOR]- Published
- 2024
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