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  1. No Access

    Article

    Direct 13C-31P coupling constant of coordinated triphenylphosphine as a characteristic of electron-withdrawing power of the metal center

    Yu. S. Varshavskii, T. G. Cherkasova… in Russian Journal of General Chemistry (2013)

  2. No Access

    Article

    Interfragment transmission of electronic effects of π-acceptor ligands in heterometallic triad complexes with trans-[Ru(Py)4(CN)2] as a central unit

    The complex trans-[RuPy4(CN)2] cleaves chloride bridges in the binuclear rhodium(i) and palladium(ii) complexes [Rh(CO)2Cl]2, [Rh(η4-C8H12)Cl]2, [(η4-C8H12)Rh(μ-Cl)2Rh(CO)2], [Pd(η3-C3H5)Cl]2, and [(η3-C3H5)Pd(μ-...

    A. B. Nikol’skii, Yu. S. Varshavsky, T. G. Cherkasova… in Russian Chemical Bulletin (2012)

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    Article

    On the spatial structure of methyl 6,7-endo, sin-dibrom-7-anti-(phenylsulfonyl) bicyclo[3.1.1]heptane-6-exo-carboxylate

    In the 1 H and 13 C NMR spectra of methyl 6,7-endo,sin-dibromo-7-anti-(phenylsulfonyl)bicycle-[3.1.1]heptane-6-exo-carboxylate, H(1) and H(5) protons as well as C(1) and C(5) carbon atoms show their chemical ineq...

    V. A. Vasin, P. S. Petrov, M. Genaev, V. A. Gindin… in Journal of Structural Chemistry (2010)

  4. No Access

    Article

    Reaction of chiral pyrrolylphosphine with polynuclear carbonyl complexes of osmium and rhodium

    Reactions of labile Os3(CO)10(NCMe)2 and Rh6(CO)15(NCMe) clusters and dinuclear Rh2(CO)4Cl2 complex with chiral (S)-[2-(4-isopropyl-4,5-dihydro-1,3-oxazol-2-yl)phenyl]di(1H-pyrrol-1-yl)phosphine were studied. The...

    V. I. Ponomarenko, E. V. Gracheva, I. O. Koshevoi… in Russian Journal of General Chemistry (2010)

  5. No Access

    Article

    Structure and biological properties of 2H-1-benzopyran-2-one (coumarin) derivatives

    The physicochemical and pharmacological properties of some natural derivatives of 2H-1-benzopyran-2-one (coumarin) have been studied, including decursinol and obtusifol, which are the most promising compounds ...

    A. Z. Abyshev, V. A. Gindin, E. V. Semenov, E. M. Agaev… in Pharmaceutical Chemistry Journal (2006)

  6. No Access

    Article

    Tautomerism of 5-fluoro-4-hydroxy-2-methoxypyrimidine. Conditions for stabilization of the zwitterionic tautomer

    5-Fluoro-4-hydroxy-2-methoxypyrimidine exists in a solution as two oxo tautomers with the conjugated and isolated double bonds in the ring. The latter tautomer has a zwitterionic structure, and it dominates in...

    G. M. Kheifets, V. A. Gindin, E. P. Studentsov in Russian Journal of Organic Chemistry (2006)

  7. No Access

    Article

    Direction of isomerization of 5-hydroxy-3-propargylthio-1,2,4-triazines according to 1H/15N heteronuclear multiple bond correlation (HMBC) spectra

    We have studied isomerization of 6-substituted 5-hydroxy-3-propargylthio-1,2,4-triazines using base catalysis. We have used NMR correlation spectroscopy (1H/15N HMBC spectra) to prove the structure of the regiois...

    V. Yu. Smutin, V. A. Gindin, N. O. Sablina in Chemistry of Heterocyclic Compounds (2006)

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    Article

    Ring Opening in 1- and 3-Methylpyrimidin-4-ones in the Presence of Bases

    According to the data of UV and NMR spectroscopy, 1- and 3-methylpyrimidin-4-ones and their 5-fluoro-substituted analogs in water and DMSO in the presence of bases undergo ring opening with formation of β-form...

    G. M. Kheifets, V. A. Gindin in Russian Journal of Organic Chemistry (2004)

  9. No Access

    Article

    Effect of the Structure of 1- and 3-Methyl-5-fluoropyrimidin-4-ones on H-D Exchange in Position 6under Conditions of Base Catalysis

    Hydrogen atom in position 6of 5-fluoro-1-methylpyrimidin-4(1H)-one and its 2-methylsulfanyl, 2methoxy and 2-butylamino derivatives is readily replaced by deuterium in 90% methanol-d 4 at ~20°C under conditions of...

    G. M. Kheifets, V. A. Gindin, A. V. Moskvin in Russian Journal of Organic Chemistry (2004)

  10. No Access

    Article

    Effect of the Structure of 1- and 3-Methylpyrimidin-4-ones on the Rate of Nucleophilic Substitution of the 2-Methylsylfanyl Group

    Rate constants for substitution of the 2-methylsulfanyl group in 1- and 3-methyl-2-methylsulfanyl-pyrimidin-4-ones and their 5-fluoro analogs were measured in the reaction with butylamine, alkaline hydrolysis,...

    G. M. Kheifets, V. A. Gindin, T. A. Nikolova in Russian Journal of Organic Chemistry (2004)

  11. No Access

    Article

    Aminolysis of the product of the oxidation of 2-methylquinoline-3-carboxylic acid by thionyl chloride

    V. P. Semenov, P. S. Lobanov, V. A. Gindin… in Chemistry of Heterocyclic Compounds (1993)

  12. No Access

    Article

    Furocoumarins of Ruta graveolens

    A. Z. Abyshev, V. A. Gindin, Yu. B. Kerimov… in Chemistry of Natural Compounds (1992)

  13. No Access

    Article

    1,4,5,6-Tetrahydro-1,2,4-triazin-6-ones and 3-amino-1-imidazolin-4-ones from 2-aminoacylhydrazines

    The 2-aminoacylhydrazines form 1,4,5,6-tetrahydro-1,2,4-triazin-6-ones with orthoesters and iminoesters. Benzylidene and isopropylidene derivatives of the 2-aminoacylhydrazines give the corresponding derivativ...

    P. S. Lobanov, A. L. Grebelkin, D. I. Zaitsev… in Chemistry of Heterocyclic Compounds (1991)

  14. No Access

    Article

    Phthalimidoaziridinylation of the simplest vinylacetylenes

    The oxidation of N-aminophthalimide with lead tetraacetate in the presence of butenyne and 2-methylbutenyne leads to the corresponding 1-phthalimido-2-ethynylaziridines in good yields.

    M. A. Kuznetsov, V. V. Semenovskii, V. A. Gindin in Chemistry of Heterocyclic Compounds (1991)

  15. No Access

    Article

    Reaction of phthalimidonitrene with phenylbutenynes

    The addition of phthalimidonitrene with phenylbutenynes proceeds exclusively at the double bond and leads to derivatives of 1-phthalimido-2-ethynylaziridine in high yield. The observed chemoselectivity of this...

    M. A. Kuznetsov, V. V. Semenovskii, V. N. Belov… in Chemistry of Heterocyclic Compounds (1989)

  16. No Access

    Article

    Azoles and azines. 62. Structure of 2-aryl-1,3-oxazine-4,6-diones

    1H,13C NMR, IR, and UV spectra have been studied for solutions of a number of potentially tautomeric 2-aryl-1,3-oxazine-4,6-diones and their 5-methyl substituted analogs with variation of substituent at the para...

    V. é. Zakhs, I. P. Yakovlev, N. A. Smorygo… in Chemistry of Heterocyclic Compounds (1987)

  17. No Access

    Article

    Hindered rotation of unsubstituted amino groups of fluorinated β-aminovinyl thiones

    1. The hindered rotation of the unsubstituted amino group around the N-C= bond in fluorinated β-aminovinyl thion...

    K. I. Pashkevich, I. G. Busygin… in Bulletin of the Academy of Sciences of the… (1984)

  18. No Access

    Article

    Ring-chain tautomerism of substituted hydrazones. 17. Alkyl-substituted perhydro-1,3,4-thiadiazines

    It was demonstrated by PMR spectroscopy that alkylidene derivatives of vic-(Nalkylhydrazino) thiols in solutions exist exclusively in the cyclic form, i.e., as perhydro-1,3,4-thiadiazines. Only pinacolone deri...

    A. A. Potekhin, S. M. Shevchenko, T. Ya. Vakhitov… in Chemistry of Heterocyclic Compounds (1981)

  19. No Access

    Article

    1,3-thiazinediones and pyrimidinediones

    The character of the effect of substituents on the position of the keto-enol equilibrium in 2-substituted 4,6-dioxodihydro-1,3-thiazines and the structure of the enol form are examined. 2-Phenyl-4,6-dioxodihydro-

    V. G. Beilin, V. A. Gindin, B. Ya. Simkin in Chemistry of Heterocyclic Compounds (1979)

  20. No Access

    Article

    1,3-thiazinediones and pyrimidinediones

    2-Phenyl-4-hydroxy-1,3-thiazin-6-one was subjected to electrophilic substitution reactions, and its 5-nitro, 5-bromo-, 5-iodo, 5-sulfo, and 5-arylazo derivatives were obtained. The effect of the substituent at...

    V. G. Beilin, V. A. Gindin, V. N. Kuklin… in Chemistry of Heterocyclic Compounds (1979)

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