Abstract
It was established for the first time by chromato-mass spectrometry that 2-X-5-Y-2,5-dihydrofurans (X, Y=OH, OEt) and 2-ethoxyfuran are formed during the oxidation of furan by hydrogen peroxide in a mixture of water and ethanol in the presence of VOSO4. Stable tautomeric forms of 2-hydroxy- and 2,5-dihydroxyfurans-2(5H)-furanone and 5-ethoxy-2(5H)-furanone respectively-were isolated from the reaction mixture. A probable scheme for the main reaction paths is proposed.
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For Communication 4, see [1].
Kubansk State Technological University, Krasnodar, Russia. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1047–1054, August, 1998.
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Poskonin, V.V., Badovskaya, L.A. & Povarova, L.V. Catalytic oxidation of furan and hydrofuran compounds. 5. Hydroxy- and ethoxydihydrofurans and ethoxyfuran-new products from the reaction of furan with hydrogen peroxide. Chem Heterocycl Compd 34, 900–906 (1998). https://doi.org/10.1007/BF02311323
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DOI: https://doi.org/10.1007/BF02311323