Abstract
Derivatives of some condensed systems that include furan rings were obtained by condensation of 1,4-benzoquinones with cyclic β-diketones under the conditions of the Michael reaction. The structure of the methoxy derivatives of tetrahydrobenzofuran were established from the PMR spectra with the aid of europium(III) tris(1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionate). The location of the europium ion in the adduct of the lanthanide shift reagent (LSR) with the substrate was determined.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 22–26, January, 1980.
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Kornilov, M.Y., Makovetskii, V.P., Turov, A.V. et al. Synthesis of derivatives of some condensed systems that include furan rings and investigation of them by the lanthanide-shift-reagent method. Chem Heterocycl Compd 16, 16–20 (1980). https://doi.org/10.1007/BF00475382
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DOI: https://doi.org/10.1007/BF00475382