Five Roads That Converge at the Cyclic Peroxy-Criegee Intermediates: BF3-Catalyzed Synthesis of β-Hydroperoxy-β-peroxylactones Full article
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Journal of Organic Chemistry
ISSN: 1520-6904 , E-ISSN: 0022-3263 |
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| Output data | Year: 2018, Volume: 83, Number: 21, Pages: 13427-13445 Pages count : 19 DOI: 10.1021/acs.joc.8b02218 | ||||||||
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Abstract:
We have discovered synthetic access to β-hydroperoxy-β-peroxylactones via BF3-catalyzed cyclizations of a variety of acyclic precursors, β-ketoesters and their silyl enol ethers, alkyl enol ethers, enol acetates, and cyclic acetals, with H2O2. Strikingly, independent of the choice of starting material, these reactions converge at the same β-hydroperoxy-β-peroxylactone products, i.e., the peroxy analogues of the previously elusive cyclic Criegee intermediate of the Baeyer–Villiger reaction. Computed thermodynamic parameters for the formation of the β-hydroperoxy-β-peroxylactones from silyl enol ethers, enol acetates, and cyclic acetals confirm that the β-peroxylactones indeed correspond to a deep energy minimum that connects a variety of the interconverting oxygen-rich species at this combined potential energy surface. The target β-hydroperoxy-β-peroxylactones were synthesized from β-ketoesters, and their silyl enol ethers, alkyl enol ethers, enol acetates, and cyclic acetals were obtained in 30–96% yields. These reactions proceed under mild conditions and open synthetic access to a broad selection of β-hydroperoxy-β-peroxylactones that are formed selectively even in those cases when alternative oxidation pathways can be expected. These β-peroxylactones are stable and can be useful for further synthetic transformations.
Cite:
Vil V.A.
, Gomes G.d.P.
, Ekimova M.V.
, Lyssenko K.A.
, Syroeshkin M.A.
, Nikishin G.I.
, Alabugin I.V.
, Terent’ev A.O.
Five Roads That Converge at the Cyclic Peroxy-Criegee Intermediates: BF3-Catalyzed Synthesis of β-Hydroperoxy-β-peroxylactones
Journal of Organic Chemistry. 2018. V.83. N21. P.13427-13445. DOI: 10.1021/acs.joc.8b02218 WOS Scopus OpenAlex
Five Roads That Converge at the Cyclic Peroxy-Criegee Intermediates: BF3-Catalyzed Synthesis of β-Hydroperoxy-β-peroxylactones
Journal of Organic Chemistry. 2018. V.83. N21. P.13427-13445. DOI: 10.1021/acs.joc.8b02218 WOS Scopus OpenAlex
Identifiers:
| Web of science: | WOS:000449443200045 |
| Scopus: | 2-s2.0-85055708275 |
| OpenAlex: | W2897011620 |