Abstract
3,5′-and 5,5′-Diindolyls were obtained from ethyl pyruvate 4-(2-carbethoxy-3-indolyl) phenylhydrazone and ethyl pyruvate 4,4′-biphenylyldihydrazone by Fischer cyclization and subsequent saponification and decarboxylation. The formation of 5-phenyl-2-carbethoxyindole, from which 5-phenylindole was obtained, was observed in the indolization of ethyl pyruvate 4,4′-biphenylyldihydrazone.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 217–224, February, 1978.
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Suvorov, N.N., Samsoniya, S.A., Chilikin, L.G. et al. Diindolyls. Chem Heterocycl Compd 14, 173–180 (1978). https://doi.org/10.1007/BF00945330
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DOI: https://doi.org/10.1007/BF00945330