Abstract
The oxidation of diastereomeric Michael adducts of levoglucosenone and cyclohexanone with 5 equiv of H2O2 in isopropanol at 60°C results in selective formation of a γ-lactone. The reaction with 50 equiv of H2O2 under the same conditions gave a 6-ketononano-9-lactone annulated to the γ-lactone ring. The keto group in the latter reacts with tosylhydrazine to form a hydrazone, unlike what is the case with 6-ketononano-9-lactones annulated to the pyran ring.
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ACKNOWLEDGMENTS
Analyses were performed using the equipment of the Khimiya Center for Collective Use, Ufa Institute of Chemistry, Ufa Federal Research Center, Russian Academy of Sciences.
Funding
The work was performed according to the State order (contract no. АААА-А17-117011910022-5) and financially supported by the Russian Foundation for Basic Research (project no. 17-43-020166-r_а).
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Faizullina, L.K., Galimova, Y.S. & Valeev, F.A. Baeyer–Villiger Oxidation of Diastereomeric Michael Adducts of Levoglucosenone into Dilactones. Russ J Org Chem 56, 197–201 (2020). https://doi.org/10.1134/S1070428020020037
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DOI: https://doi.org/10.1134/S1070428020020037