Transformation of 3,4-bis(formylamino)pyridine into 4-nitro-1,2,3-triazolo[4,5-c]pyridine 2-oxide in the reaction with nitrating mixture
作者:Yu. M. Yutilov、N. N. Smolyar
DOI:10.1007/s11178-005-0055-8
日期:2004.10
Treatment of 3,4-bis(formylamino)pyridine with a mixture of concentrated nitric and sulfuric acids unexpectedly afforded 4-nitro-1,2,3-triazolo[4,5-c]pyridine 2-oxide. Reduction of the latter with iron in acetic acid gave previously known 4-amino-1,2,3-triazolo[4,5-c]pyridine.
用浓硝酸和硫酸的混合物处理3,4-双(甲酰氨基)吡啶,意外地得到了4-硝基-1,2,3-三唑并[4,5-c]吡啶2-氧化物。后者在乙酸中与铁反应,得到已知的4-氨基-1,2,3-三唑并[4,5-c]吡啶。