1,3-dipolar cycloaddition of diazomethane to quinoid derivatives of pyrido[1,2-a]benzimidazole
作者:O. Yu. Slabko、N. V. Ageenko、V. A. Denisenko、V. A. Kaminskii
DOI:10.1134/s1070428017020154
日期:2017.2
Reactions of diazomethane with quinone mono(di)imines and methylidene quinone imines of pyrido[1,2-a]benzimidazole series occurs by the route of 1,3-dipolar cycloaddition and leads to the formation of quinoid compounds, in particular, previously unknown heterocyclic structures of indazolo[7',6':4,5]imidazo-[2,1-j]quinoline, indazolo[7',6':4,5]imidazo[2,1-e]acridine, indazolo[4',5':4,5]imidazo[2,1-j]quinoline, and indazolo[4',5':4,5]imidazo[2,1-e]acridine.