Abstract
Methyl triflate is an efficient agent for the quaternization of nitropyridines containing an additional electron-withdrawing substituent. When triethyloxonium hexachloroantimonate is used as the quaternizing agent, β-elimination occurs with formation of protic pyridinium salt and ethylene.
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M. V. Lomonosov Moscow State University, 119899 Moscow, Russia. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 53–54, January, 2000.
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Mit'kin, O.D., Yurovskaya, M.A. Quaternization of electron-deficient pyridines containing two electron-withdrawing substituents. Chem Heterocycl Compd 36, 47–48 (2000). https://doi.org/10.1007/BF02256843
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DOI: https://doi.org/10.1007/BF02256843