Abstract
4-Morpholinopteridine reacts with triethyloxonium tetra-fluoroborate to give two types of isomeric quaternary salts, viz., 1-ethyl- and 8-ethyl-4-morpholinopteridinium tetrafluoroborates. The structures of the pteridinium cations were proved by the 1H and 13C NMR spectra and also by chemical transformations in reactions with simple nucleophiles.
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See [1] for communication 2.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1257–1264, September, 1985.
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Kazantseva, I.V., Charushin, V.N., Chuapkhin, O.N. et al. Reactions of N-alkylazinium cations. 3. Quaternary pteridinium salts. Synthesis, structure, and reactions with simple nucleophiles. Chem Heterocycl Compd 21, 1048–1055 (1985). https://doi.org/10.1007/BF00515033
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DOI: https://doi.org/10.1007/BF00515033