Abstract
The ethyl ester of Β-(2,3-dimethylindolyl-5)aminocrotonic acid under Vilsmeier reaction conditions is converted into isomeric linear and bent pyrroloquinolines with predominant formation of the latter. The enaminoketone which is obtained from the same aminoindole and dibenzoylmethane under the same conditions underoges the usual Comb cyclization with a change in the ratio for the yield of isomeric pyrroloquinolines.
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S. A. Yamashkin, L. G. Yudin, and A. N. Kost, Khim. Geterotsikl. Soedin., No. 4, 493 (1983).
J. N. Dominquez, D. Adams, and J. A. Parez, Tetrahedron Lett., 24, 513 (1983).
A. N. Kost, S. A. Yamashkin, and L. G. Yudin, Khim. Geterotsikl. Soedin., No. 6, 770 (1977).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 228–230, February, 1989.
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Yamashkin, S.A., Boriskina, N.Y. Synthesis of pyrroloquinolines. Chem Heterocycl Compd 25, 187–189 (1989). https://doi.org/10.1007/BF00479914
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DOI: https://doi.org/10.1007/BF00479914