Electrocatalytic cascade assembly of benzylidenebarbiturates and cyclohexane-1,3-diones in methanol in the presence of sodium bromide as mediator in an undivided cell results in the formation of dihydro-2'H,3H-spiro[1-benzofuran-2,5'-pyrimidines] in 72–85% yields. This electrochemical process occurs under mild conditions, and the isolation procedure after the reaction is simple. The structures of the final compounds were confirmed by 1H–13C HMBC spectroscopy.
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The reported study was funded by the Russian Foundation for Basic Research (project No. 19-29-08013).
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Published in Khimiya Geterotsiklicheskikh Soedinenii, 2021, 57(6), 672–678
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Ryzhkov, F.V., Elinson, M.N., Ryzhkova, Y.E. et al. Electrocatalytic cascade approach to the synthesis of dihydro-2'H,3H-spiro[1-benzofuran-2,5'-pyrimidines]. Chem Heterocycl Comp 57, 672–678 (2021). https://doi.org/10.1007/s10593-021-02966-8
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DOI: https://doi.org/10.1007/s10593-021-02966-8