Abstract
Methyl 1,3,11′-trioxo-1,3,10a′,11′-tetrahydro-4β′H-spiro[inden-2,10′-indeno[1,2-b]chromene]-7′(8′)-ylcarbamates and methyl(ethyl) 4-(1,1′,3,3′-tetraoxo-2,2′,3,3′-tetrahydro-1H,1′H-2,2′-biinden-2-yl)-phenylcarbamates were synthesized by condensation of 2-hydroxy-2,2′-biindane-1,1′,3,3′-tetrone with methyl N-(3(4)-hydroxyphenyl)carbamates and methyl(ethyl) N-phenylcarbamates. Condensation of methyl N-(2-hydroxyphenyl)-carbamate with the tetrone gave methyl 2-hydroxy-5-(1,1′,3,3′-tetraoxo-2,2′,3,3′-tetrahydro-1H,1′H-2,2′-biinden-2-yl)phenylcarbamate. Methyl 4-(3′-amino-1,1′,3-trioxo-2,3-dihydro-1H,1′H-2,2′-biinden-2-yl)-phenylcarbamate was obtained by boiling methyl 4-(1,1′,3,3′-tetraoxo-2,2′,3,3′-tetrahydro-1H,1′H-2,2′-biinden-2-yl)-phenylcarbamate with urea in glacial acetic acid. Condensation of methyl 4-(1,1′,3,3′-tetraoxo-2,2′,3,3′-tetrahydro-1H,1′H-2,2′-biinden-2-yl)-phenylcarbamate with hydrazine hydrate at room temperature gave methyl N-{4-[(1,3-dioxo-2,3-dihydro-1H-inden-2-yl)(4-oxo-3,4-dihydro-1-phthalazinyl)methyl]phenyl}-carbamate.
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Russian Text © A.V. Velikorodov, A.S. Zukhairaeva, S.B. Nosachev, N.S. Markov, 2019, published in Zhurnal Organicheskoi Khimii, 2019, Vol. 55, No. 2, pp. 180–185.
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Velikorodov, A.V., Zukhairaeva, A.S., Nosachev, S.B. et al. Synthesis of Novel Polycyclic Carbamate Derivatives of 2-Hydroxy-2,2′-biindane-1,1′,3,3′-tetrone. Russ J Org Chem 55, 137–141 (2019). https://doi.org/10.1134/S1070428019020027
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DOI: https://doi.org/10.1134/S1070428019020027