New Cyclization Reactions of 3-Dialkylamino-4-aminopyridines under Conditions of Nitration
摘要:
Treatment of 3-dialkylamino-4-aminopyridines (1) with nitric and sulfuric acids affords imidazo[4,5-c]pyridine derivatives (2, 3 and 4) and 1,2,3-triazolo[4,5-c]pyridine 2-oxides (5) by cyclization reaction of the corresponding 4-nitroaminopyridines.
Treatment of 3-dialkylamino-4-aminopyridines (1) with nitric and sulfuric acids affords imidazo[4,5-c]pyridine derivatives (2, 3 and 4) and 1,2,3-triazolo[4,5-c]pyridine 2-oxides (5) by cyclization reaction of the corresponding 4-nitroaminopyridines.