Abstract
It is shown that quaternization of isomers of 1-methylimidazo[4,5-b]pyridine and 3-methyl-imidazo[4,5-b]pyridine proceeds at different reaction centers — at the nitrogen atom of the imidazole ring in the first case and at the nitrogen atom of the pyridine ring in the second case.
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Yu. M. Yutilov and R. M. Bystrova, Khim. Geterotsikl. Soedin., 954 (1968).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1686–1688, December, 1973.
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Pliev, T.N., Bystrova, R.M. & Yutilov, Y.M. Quaternization centers of N-methyl derivatives of imidazo[4,5-b]pyridine. Chem Heterocycl Compd 9, 1526–1527 (1973). https://doi.org/10.1007/BF00477572
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DOI: https://doi.org/10.1007/BF00477572