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Updated: May 27, 2025

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Synthesis of new condensed naphthoquinone, pyran and pyrimidine furancarboxylates
Kirill A Gomonov1, Vasilii V Pelipko1, Igor A Litvinov2
1Department of organic chemistry, Herzen State Pedagogical University of Russia, nab. r. Moiki 48, 191186 St. Petersburg, Russian Federation.
Abstract:
New representatives of dioxodihydronaphtho[2,3-b]furan-, furo[3,2-c][1]benzopyran-, furo[2,3-d]pyrano[4,3-b]pyran-, furo[2',3':4,5]pyrano[3,2-c]chromene-, and furo[2,3-d]pyrimidine carboxylates were obtained from the reactions of alkyl 3-bromo-3-nitroacrylates with representatives of carbo- and heterocyclic CH-acids under simple conditions, without the use of organocatalysts. The structures of the synthesized compounds were proven by a set of physicochemical methods, including X-ray diffraction analysis.
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