Imidazo[1,2-a]pyridine derivatives have been shown to possess a broad range of biological activity. 2-Amino-1-propargylpyridinium and 2-amino-1-(2-bromoallyl)pyridinium bromides, the structures of which were established on the basis of X-ray structural analysis, reacted with sodium methoxide, leading to the formation of 2-methylimidazo[1,2-a]pyridine. 2-Methylimidazo[1,2-a]pyridine further reacted with bromine and iodine, providing 3-halo-2-methyl-1H-imidazo[1,2-a]pyridinium trihalides, the structure of which was confirmed by X-ray structural analysis. 3-Halo-2-methyl-1H-imidazo[1,2-a]pyridinium halides were obtained from the respective trihalides. 3-Bromo- 2-methyl-1H-imidazo[1,2-a]pyridinium bromide showed antimicrobial properties against Staphylococcus aureus at the concentrations of 2700 and 675 μg/ml.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2022, 58(4/5), 227–234
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Kalita, E.V., Kim, D.G., Krynina, E.M. et al. Synthesis and halogenation of 2-methylimidazo[1,2-a]pyridine. Antimicrobial activity of 3-bromo-2-methyl-1Н-imidazo[1,2-a]pyridinium bromide. Chem Heterocycl Comp 58, 227–234 (2022). https://doi.org/10.1007/s10593-022-03076-9
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DOI: https://doi.org/10.1007/s10593-022-03076-9