Abstract
The cyclization of N-alkylquinoxalinium salts with the anions of β-dicarbonyl compounds proceeds regioselectively and stereoselectively and leads to endo-3a, 4,9,9a-tetrahydrofuro[2,3-b]quinoxalines. The structure of the cycloadducts was established on the basis of the 1H and 13C NMR spectra and the results of x-ray diffraction analysis.
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See [1] for Communication 2.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1392–1398, October, 1981.
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Chupakhin, O.N., Charushin, V.N., Klyuev, N.A. et al. Cyclization of N-alkylazinium cations with bisnucleophiles. 3. endo adducts in the reaction of quinoxalium salts with β-diketones and their x-ray diffraction analysis. Chem Heterocycl Compd 17, 1046–1052 (1981). https://doi.org/10.1007/BF00503539
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DOI: https://doi.org/10.1007/BF00503539