Quaternization centers of N-methyl derivatives of imidazo[4,5-b]pyridine
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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.
KeywordsNitrogen Organic Chemistry Pyridine Imidazole Nitrogen Atom
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