N-Methylation and N-oxidation of the less reactive nitrogen atom of a 2,3'-bipyridine. Two general methods for polyazines

Article abstract of DOI:10.1016/0040-4020(95)00074-I

5-Carbamoyl-2,3'-bipyridine model compound was N-methylated or N-oxidized at the less reactive 2-pyridyl ring for the first time. Two different schemes were developed.