New Synthetic Approaches to Multifunctional Phenazinium Salt Derivatives
作者:Inna Garipova、Vladimir Silnikov
DOI:10.3390/80600505
日期:——
Two different approaches are offered for the synthesis under mild conditions of disubstituted phenazinium and benzo[a]phenazinium salts. Direct nucleophilic substitutions by primary and secondary amines in quaternary phenazinium salts containing an additional positive charge in the aliphatic part of the molecule were carried out. The substitution proceeds successively in positions 2 and 7, which allows