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  1. No Access

    Article

    Competition of (3+2) annulation and (3+2) cycloaddition in the reaction of alkenes with donor-acceptor cyclopropanes

    Lewis acid-initiated reaction of (het)aryl-substituted donor-acceptor cyclopropanes with styrenes was studied. The initiation of the process by tin(IV) chloride caused the reaction to proceed in two alternative d...

    Yu. A. Volkova, M. A. Boichenko, V. V. Shorokhov… in Russian Chemical Bulletin (2024)

  2. No Access

    Article

    Ring expansion of donor—acceptor cyclopropanes bearing arylcarbamoyl group into 1,5-diarylpyrrolidin-2-ones

    The rearrangement of 2,N-diaryl-1-carbamoylcyclopropanecarboxylates upon their treatment with titanium(iv) chloride was found to proceed as ring expansion affording 1,5-diaryl-2-oxopyrrolidine-3-carboxylates. In ...

    A. E. Vartanova, A. Yu. Plodukhin, M. A. Boichenko… in Russian Chemical Bulletin (2022)

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    Article

    3-Substituted Thietane-1,1-Dioxides: Synthesis, Antidepressant Activity, and in Silico Prediction of Their Pharmacokinetic and Toxicological Properties

    3-Aryloxy- and 3-phenylsulfanylthietane-1,1-dioxides were synthesized by reacting 3,5-dibromo-1-(1,1-dioxothietan-3-yl)-1,2,4-triazole with sodium phenolates and thiophenolate. The 5-aryloxy- and 5-arenesulfon...

    E. É. Klen, I. L. Nikitina, N. N. Makarova… in Pharmaceutical Chemistry Journal (2017)

  4. No Access

    Article

    Reaction of donor-acceptor cyclopropanes with 1,3-diphenylisobenzofuran. Lewis acid effect on the reaction pathway

    Reaction of donor-acceptor cyclopropanes with 1,3-diphenylisobenzofuran in the presence of lanthanide triflates, as well as CuOTf, Sn(OTf)2, SnCl2, ZnCl2, GaCl3, and MgI2, proceeds as a formal [3+4]-cycloaddition...

    A. O. Chagarovskiy, O. A. Ivanova, E. M. Budynina… in Russian Chemical Bulletin (2013)

  5. No Access

    Article

    Reaction of dimethyl (S)-2-(p-tolyl)cyclopropane-1,1-dicarboxylate with acetonitrile

    A. O. Chagarovskiy, K. L. Ivanov, E. M. Budynina… in Chemistry of Heterocyclic Compounds (2012)

  6. No Access

    Article

    First synthesis of 2-alkyl- 5-aryl-3,3-bis(methoxycarbonyl)- 4,5-dihydropyrroles

    A. O. Chagarovskiy, E. M. Budynina, O. A. Ivanova… in Chemistry of Heterocyclic Compounds (2010)

  7. No Access

    Article

    Unusual reactions of vinyl ketones with tetranitromethane. The synthesis of 5-acyl-3-nitroisoxazoles

    Yu. A. Volkova, O. A. Ivanova, E. M. Budynina, E. B. Averina… in Russian Chemical Bulletin (2008)

  8. No Access

    Article

    Specificity of the Reaction of Tetranitromethane with Alkenes in Nitromethane

    Reactions of tetranitromethane with a number of di- and trisubstituted olefins in nitromethane were studied. Vinylcyclopropanes and phenylcycloalkenes reacted with tetranitromethane in an unexpected fashion, l...

    O. A. Ivanova, E. B. Averina, E. M. Budynina… in Russian Journal of Organic Chemistry (2005)

  9. No Access

    Article

    Three-component Reactions of Tetranitromethane with Olefins

    Three-component reactions of tetranitromethane with two different olefins taken in equimolar amounts are procedures fit for preparation of 3,3-dinitroisoxalidines of a mixed composition.

    E. B. Averina, E. M. Budynina, O. A. Ivanova… in Russian Journal of Organic Chemistry (2004)

  10. No Access

    Article

    Formation of 2,2-Dinitropiperidin-4-ones in the Addition of Tetranitromethane to Bicyclobutylidene and Methylenecyclopropanes

    E. M. Budynina, O. A. Ivanova, E. B. Averina… in Russian Journal of Organic Chemistry (2003)

  11. No Access

    Article

    Synthesis of nitrosubstituted triangulanes

    The [1+2] cycloaddition of ethyl nitrodiazoacetate to various methylenecyclopropanes afforded 1-ethoxycarbonyl-1-nitropolyspirocyclopropanes. These compounds were used in the synthesis of first representatives...

    O. A. Ivanova, N. V. Yashin, E. B. Averina, Yu. K. Grishin… in Russian Chemical Bulletin (2001)

  12. No Access

    Article

    Synthesis of β-Aminoethyl-substituted Pyrazoles

    Methods have been developed for the synthesis of 3,5-dimethyl-4-(2-N-mono- and -disubstituted and also unsubstituted aminoethyl)pyrazoles from 1,1-diacetylcyclopropane.

    O. V. Kokoreva, E. B. Averina, O. A. Ivanova… in Chemistry of Heterocyclic Compounds (2001)

  13. No Access

    Article

    Synthesis of New 3,4-Disubstituted Furazans

    A series of new 3,4-substituted furazans was synthesized on the basis of the mutual transformations of the functional groups in halogenomethyl and bisacyl derivatives of furazan.

    O. A. Ivanova, E. B. Averina, T. S. Kuznetsova… in Chemistry of Heterocyclic Compounds (2000)

  14. No Access

    Article

    Electrophilic substitution and electronic structure of indolo[2,3-b]quinoxaline

    The nitration and bromination of 6-methylindolo[2,3-b]quinoxaline take place in the 9 position. The reactivity indexes were calculated within the framework of the Hückel MO and CNDO (complete neglect of differ...

    V. T. Grachev, S. P. Ivashchenko, O. A. Ivanova… in Chemistry of Heterocyclic Compounds (1984)