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  1. No Access

    Article

    Synthesis of 3-aminomethyl-4-hydroxycoumarins and their retro-Mannich reaction in dimethyl sulfoxide

    Hydrogenation of 3-formyl-4-hydroxycoumarin aliphatic imines leads to 3-aminomethyl-4-hydroxycoumarins, which undergo a retro-Mannich reaction in dimethyl sulfoxide containing even traces of water.

    B. G. Milevskii, T. A. Chibisova, N. P. Solov´eva… in Russian Chemical Bulletin (2015)

  2. No Access

    Article

    Tautomeric Forms of 3-Formyl- 4-Hydroxycoumarin Arylhydrazones

    Tautomeric forms of 3-formyl-4-hydroxycoumarin arylhydrazones were studied by 1H and 13C NMR spectroscopy, as well as X-ray structural analysis. These compounds were shown to exist primarily in the 4-hydroxycouma...

    V. S. Lebedev, B. G. Milevskii, N. P. Solov’eva… in Chemistry of Heterocyclic Compounds (2014)

  3. No Access

    Article

    Synthesis and structure of Schiff bases derived from 3-formyl-4-hydroxycoumarin and diamines

    The mono- and diimine products from the condensation of 3-formyl-4-hydroxycoumarin and various diamines were synthesized. It was shown by 1H NMR and mass spectrometry that the obtained compounds in DMSO-d6 soluti...

    B. G. Milevskii, T. A. Chibisova, N. P. Solov’eva… in Chemistry of Heterocyclic Compounds (2013)

  4. No Access

    Article

    Hydrazones derived from thiooxamohydrazides and 3-formyl-4-hydroxycoumarin: synthesis, structures, and fragmentation

    Novel hydrazones were obtained from thiooxamohydrazides and 3-3-formyl-4-hydroxycoumarin. According to data from NMR spectroscopy and X-ray diffraction, the coumarin fragment in the compounds obtained exists a...

    B. G. Milevsky, N. P. Solov’eva, T. A. Chibisova… in Russian Chemical Bulletin (2012)

  5. No Access

    Article

    New reactions, functional compounds, and materials in the series of coumarin and its analogs

    Data on the development of new functional compounds and materials based on the study of the reactions of coumarin and its analogs are generalized. Since coumarin derivatives are characterized by enhanced photo...

    V. F. Traven, A. V. Manaev, A. Yu. Bochkov, T. A. Chibisova… in Russian Chemical Bulletin (2012)

  6. No Access

    Article

    E/Z(C=C)-Isomerization of enamines of 3-formyl-4-hydroxycoumarin induced by organic solvents

    According to 1? and 13? NMR data, enamines of 3-formyl-4-hydroxycoumarin exist in the keto enamine tautomeric form and undergo Z/E-isomerization around the C=C bond in CDCl3, DMSO-d6, and CD3OD at room temperatur...

    V. F. Traven, I. V. Ivanov, V. S. Lebedev, T. A. Chibisova… in Russian Chemical Bulletin (2010)

  7. No Access

    Article

    Solvent-induced E/Z(C=N)-isomerization of imines of some hydroxy-substituted formylcoumarins

    Aromatic imines, namely, 5-formyl-6-hydroxy-4-methyl- and 8-formyl-7-hydroxy-4-methylcoumarin derivatives, have been synthesized. A dependence of their spectral characteristics (1H NMR spectra, electronic absorpt...

    V. F. Traven’, I. V. Ivanov, A. V. Panov, O. B. Safronova… in Russian Chemical Bulletin (2008)

  8. No Access

    Article

    Synthesis and photoinduced fluorescence of 3-(2-hetarylethenyl)chromen-2-ones

    3-(2-Hetarylethenyl)chromen-2-ones were synthesized for the first time, following two different schemes, and their spectral and photochemical properties were studied. The title compounds were found to undergo ...

    A. Yu. Bochkov, V. N. Yarovenko, M. M. Krayushkin… in Russian Journal of Organic Chemistry (2008)

  9. No Access

    Article

    Photochromism of indoline spiropyrans of the coumarin series in polymeric matrices

    The photochromic properties and aggregation processes of merocyanine forms of indoline spiropyrans of the coumarin series in the block and film poly(methyl methacrylate) (PMMA) were studied and compared by spe...

    S. M. Dolotov, V. S. Miroshnikov, T. A. Chibisova, Sin Su-Lan… in Russian Chemical Bulletin (2007)

  10. No Access

    Article

    Boron chelates in the synthesis of α,β-unsaturated ketones of the coumarin series

    Condensation of aromatic aldehydes with 3(8)-acetyl-4(7)-difluoroboryloxycoumarin intramolecular complexes gave boron complexes of α,β-unsaturated ketones, whose hydrolysis afforded the corresponding hydroxy c...

    A. V. Manaev, T. A. Chibisova, V. F. Traven in Russian Chemical Bulletin (2006)

  11. No Access

    Article

    Synthesis and structures of boron complexes of acyl hydroxy coumarins

    New boron chelates were synthesized by the reactions of 3-acetyl-4-hydroxycoumarin and 8-acyl-7-hydroxy-4-methylcoumarins with boron trifluoride etherate and hydroxybenzodioxaborole. The structure of 3-acetyl-...

    A. V. Manaev, T. A. Chibisova, K. A. Lyssenko, M. Yu. Antipin… in Russian Chemical Bulletin (2006)

  12. No Access

    Article

    Synthesis and structure of indoline spiropyrans of the coumarin series

    New indoline spiropyrans of the coumarin series were synthesized by the condensation of indoline and hydroxyformylcoumarin derivatives. Spiropyrans, viz., derivatives of 8-formyl-7-hydroxy-4-methylcoumarin and 5-...

    V. F. Traven, V. S. Miroshnikov, T. A. Chibisova… in Russian Chemical Bulletin (2005)

  13. No Access

    Article

    Photochromic properties of indoline spiropyrans of the coumarin series

    The photochromic properties and aggregation processes of merocyanine forms of indoline spiropyrans of the coumarin series in solutions were studied by spectral and kinetic methods. Photochromism of the compoun...

    V. A. Barachevsky, R. E. Karpov, O. V. Venidiktova… in Russian Chemical Bulletin (2005)

  14. No Access

    Article

    Electronic Structure of π Systems: XX. Electronic Structure and Keto-Enol Tautomerism of Dihydrofuro[2,3-h]- coumarin-9-ones by Photoelectron Spectroscopy

    Photoelectron spectroscopy and semiempirical quantum-chemical calculations were used to study the electronic structure and keto-enol tautomerism of 4-methyldihydrofuro[2,3-h]coumarin-9-one and its 8-substituted d...

    V. F. Traven', A. V. Manaev, D. V. Kravchenko… in Russian Journal of General Chemistry (2001)

  15. No Access

    Article

    Tetramethyldibenzotetrathiafulvalene and asymmetric ethylenedithiodithiadiheterafulvalenes

    1. New fulvalenes — the symmetrical tetramethyldibenzotetrathiafulvalene and the asymmetric ethylenedithiadihete...

    L. M. Gol'denberg, M. Z. Aldoshina… in Bulletin of the Academy of Sciences of the… (1985)

  16. No Access

    Article

    Complexes of dibenzotetbathiafulvalene with tetracyanoquinodimethane

    1. The compounds of tetracyanoquinodimethane with dibenzotetrathiafulvalene and dimethyldibenzo-tetrathiafulvale...

    R. N. Lyubovskaya, M. Z. Aldoshina… in Bulletin of the Academy of Sciences of the… (1975)