Abstract
3-p-Nitrophenylaminobenzofuran was obtained by the reaction of 2,3-dihydrobenzofuran-3-one with p-nitroaniline and was used in the Vilsmeier reaction for the synthesis of 2-formyl-3-p-nitrophenylaminobenzofuran. Treatment of the latter with malononitrile led to 1-p-nitrophenyl-2-imino-3-cyano-1,2-dihydropyrido[3,2-b]benzofuran.
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Azimov, V.A., Ryabova, S.Y., Alekseeva, L.M. et al. 2,3-Dihydrobenzofuran-3-one in the Synthesis of 3-Cyano-2-imino-1-p-nitrophenyl-1,2-dihydropyrido[3,2-b]benzofuran. Chemistry of Heterocyclic Compounds 36, 1272–1275 (2000). https://doi.org/10.1023/A:1017563216174
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DOI: https://doi.org/10.1023/A:1017563216174