Abstract
Cyclization of ethyl pyruvate 2,3-naphthylenehydrazone in polyphosphate ester gives 2,9-diethoxycarbonyl-1H,10H-benzo[e]pyrrolo[3,2-g]indole, which on hydrolysis and decarboxylation of the resulting acid affords the unsubtituted 1H,10H-benzo[e] pyrrolo[3,2-g]indole.
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For communication 11, see [1].
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1222–1224, September, 1985.
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Samsonia, S.A., Trapaidze, M.V., Kuprashvili, N.A. et al. Pyrroloindoles. 12. Synthesis of 1H, 10H-benzo[e]pyrrolo[3,2-g]indole. Chem Heterocycl Compd 21, 1016–1018 (1985). https://doi.org/10.1007/BF00515026
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DOI: https://doi.org/10.1007/BF00515026