The oxidative nucleophilic alkoxylation of 1,3,7-triazapyrene under acid catalysis conditions is preceded by diprotonation of the substrate. 6,8-Dialkoxy-1-methyl-1,3,7-triazapyrenium salts were synthesized. An unusual transformation of 6,8-diethoxy- and 6,8-dipropoxy-1,3,7-triazapyrenes to 1,3-dimethyl-6,8-dioxo-1,6,7,8-tetrahydro-1,3,7-triazapyrenium salts was found.
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This work was carried out with the support of the Ministry of Education and Science of the Russian Federation within the higher education program for 2013 (registry No. 3.8584.2013).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1917-1924, December, 2013.
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Demidov, O.P., Saigakova, N.A., Demidova, N.V. et al. Synthesis and Structure of Salts Derived from 6,8-Dialkoxy-1,3,7-Triazapyrenes. Chem Heterocycl Comp 49, 1777–1784 (2014). https://doi.org/10.1007/s10593-014-1430-6
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DOI: https://doi.org/10.1007/s10593-014-1430-6