Abstract
The reactions of 2-dimethyliminomethyl-3-(p-nitrophenyl)aminoindole chloride with compounds with an active methylene center have been studied. A series of derivatives of δ-carboline have been synthesized. By the reaction of 3-ethoxycarbonyl-2-methyl-1-p-nitrophenylpyrido[3,2-b]indolinium chloride with the diethyl acetal of DMF the corresponding 2-dimethylaminovinyl derivative was synthesized which was converted into 5-p-nitrophenyl-1-oxo-1,10-dihydropyrano[3',4':5,6]pyrido[3,2-b]indol-5-ium chloride in the presence of acid.
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Ryabova, S.Y., Alekseeva, L.M. & Granik, V.G. Synthesis and Some Transformations of Derivatives of Pyrido[3,2-b]indole (δ-Carboline). Chemistry of Heterocyclic Compounds 37, 997–1004 (2001). https://doi.org/10.1023/A:1012743802689
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DOI: https://doi.org/10.1023/A:1012743802689