Three-component reactions of cotarnine chloride with silver acetylides and methyl propiolate or ethynyl methyl ketone in acetonitrile, as well as two-component reactions of 5-phenylethynyl-substituted tetrahydro[1,3]dioxolo[4,5-g]isoquinoline with alkynes in various solvents were studied. Performing them in 2,2,2-trifluoroethanol as the solvent, 10-phenylethynyl-substituted tetrahydro[1,3]dioxolo[4,5-i]-[3]benzazocines were obtained in good yields.
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This work was supported by the Russian Foundation for Basic Research (grant 15-33-20187) and Ministry of Education and Science of the Russian Federation (project № 2042).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2016, 52(5), 316–321
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Voskressensky, L.G., Titov, A.A., Samavati, R. et al. Transformations of cotarnine chloride by the action of silver acetylides and alkynes. Chem Heterocycl Comp 52, 316–321 (2016). https://doi.org/10.1007/s10593-016-1884-9
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DOI: https://doi.org/10.1007/s10593-016-1884-9