Abstract
Homolytic alkylation of protonated quinoxaline with 18-crown-6, initiated by the system pivalic acid-iron(II) sulfate at 20–25‡C, gives (quinoxalin-2-yl)-18-crown-6 in 85% yield. Under analogous conditions, the reaction with quinoline affords two isomers: (quinolin-4-yl)-18-crown-6 and (quinolin-2-yl)-18-crown-6, in yields of 20 and 30% respectively.
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Yu. B. Zelechonok, V. V. Zorin, S. S. Zlotskii, and D. L. Rakhmankulov, Khim. Geterotsikl. Soedin., No. 9, 1265 (1985).
W. Burratti, G. P. Gardini, F. Minisci, F. Bertini, R. Galli, and M. Perchinuno, Tetrahedron, 27, 3655 (1971).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 75–76, January, 1988.
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Zelechonok, Y.B., Ivanova, L.P., Zorin, V.V. et al. Homolytic alkylation of quinaldine and quinoxaline with 18-crown-6. Chem Heterocycl Compd 24, 64–65 (1988). https://doi.org/10.1007/BF00475569
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DOI: https://doi.org/10.1007/BF00475569