1,3-dipolar cycloaddition of diazomethane to quinoid derivatives of pyrido[1,2-<Emphasis Type="Italic">a</Emphasis>]benzimidazole |
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Authors: | O Yu Slabko N V Ageenko V A Denisenko V A Kaminskii |
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Institution: | 1.Far Eastern Federal University,Vladivostok,Russia;2.“National center of Marine Biology”, Far East Branch,Russian Academy of Sciences,Vladivostok,Russia;3.Elyakov Pacific Institute of Bioorganic Chemistry, Far East Branch,Russian Academy of Sciences,Vladivostok,Russia |
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Abstract: | Reactions of diazomethane with quinone mono(di)imines and methylidene quinone imines of pyrido1,2-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 indazolo7',6':4,5]imidazo-2,1-j]quinoline, indazolo7',6':4,5]imidazo2,1-e]acridine, indazolo4',5':4,5]imidazo2,1-j]quinoline, and indazolo4',5':4,5]imidazo2,1-e]acridine. |
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