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Общее количество найденных документов : 473
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1.
Инвентарный номер: нет.
   
   R 95


    Rusinov, G. L.
    A convenient sonochemical synthesis of vicinally substituted 3-hydroxylaminopyridines [Electronic resource] / G. L. Rusinov, I. E. Filatov, K. I. Pashkevich // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1993. - Vol. 42, № 2. - P325-327
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A method of synthesis of vicinally substituted N-(3-pyridyl)hydroxylamines by reducing the corresponding nitropyridines with Zn/NH4Cl/EtOH under ultrasonication is proposed. Ultrasound irradiation increases the yields of these hydroxylamines and facilitates their isolation.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1993, 42 (2), 325.pdf
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2.
Инвентарный номер: нет.
   
   R 44


   
    Replacement of dimethylpyrazolyl group in 1,2,4,5-tetrazines by aliphatic alcohols and water [Electronic resource] / R. I. Ishmetova, N. I. Latosh, I. N. Ganebnuikh, N. K. Ignatenko, S. G. Tolshchina, G. L. Rusinov // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2009. - Vol. 45, № 7. - P1102-1107
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Reactions of 3,6-bis(4-R-3,5-dimethyl-1H-pyrazol-1-yl)-1,2,4,5-tetrazines and 3-amino-6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,2,4,5-tetrazines with aliphatic alcohols and water in the presence of a base involved replacement of the dimethylpyrazolyl group and resulted in the formation of mono- and dialkoxy-1,2,4,5-tetrazines and 6-substituted 3-hydroxy-1,2,4,5-tetrazines. Dissociation constants of the latter were determined by potentiometric titration.

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2009, 45 (7), 1102.pdf
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3.
Инвентарный номер: нет.
   
   P 58


   
    Photoinduced template synthesis of cyclobutane-containing crown ether [Electronic resource] / I. G. Ovchinnikova, O. V. Fedorova, P. A. Slepukhin, G. L. Rusinov // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2008. - Vol. 57, № 1. - P212-214
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The photoinitiated [2+2]-cycloaddition of 1,5-bis[2-(3-phenyl-3-oxoprop-1-en-1-yl)phenoxy]-3-oxapentane in solution was studied. In the presence of potassium cations, the reaction is intramolecular and gives crown ether containing the ?-truxin-type cyclobutane fragment (anti, head-to-head) as the major product.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2008, 57 (1), 212.pdf
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4.
Инвентарный номер: нет.
   
   S 81


   
    Stable sigma-adducts of 4,6-dinitrotetrazolo[1,5-a]pyridine with alkoxide anions [Electronic resource] / I. E. Filatov, G. L. Rusinov, O. N. Chupakhin, X. Solans, M. Font-Bardia, M. Font-Altaba // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1994. - Vol. 43, № 7. - P1214-1219
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reaction of 2-chloro-3,5-dinitropyridine with two equivalents of KN3 in the presence of ROH results in stable Meisenheimer-type -adducts of 4,6-dinitrotetra-zolo[1,5-a]pyridine with RO– anions (R = H, Alk, Ph). The mechanism of -complex formation was suggested. The structure of the -adduct with R = Me was established by IR and NMR spectroscopy and by X-ray diffraction analysis.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1994, 43 (7), 1214.pdf
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5.
Инвентарный номер: нет.
   
   T 44


   
    Theoretical estimation of the possibility of formation of oxadiazocines in the nucleophilic addition of resorcinol to pyrimidines and synthesis of new azoloannelated benzooxadiazocines [Electronic resource] / E. V. Bartashevich, P. V. Plekhanov, G. L. Rusinov, V. A. Potemkin, A. V. Belik, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1999. - Vol. 48, № 8. - P1553-1557
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A method was proposed for estimating the possibility of cyclization of adducts of resorcinol with pyrimidines to form oxadiazocines based on the conformational criterion and analysis of charges on the C(5) atom of the pyrimidine ring and on the H atom of the hydroxy group of the resulting adducts. A series of new derivatives of 4,5-dihydro-11H-5,11-methanobenzo[g]azolo[1,3,5]oxadiazocines were synthesized.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1999, 48 (8), 1553.pdf
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6.
Инвентарный номер: нет.
   
   S 98


    Rusinov, G. L.
    Synthesis of 2-substituted 6,8-dinitro[1,2,4]triazolo[1,5-a]pyridines and the formation of the related zwitterionic sigma-adducts [Electronic resource] / G. L. Rusinov, V. L. Mikhailov, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1999. - Vol. 48, № 7. - P1391-1393
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A method for the synthesis of 2-substituted 6,8-dinitro[1,2,4]triazolo[1,5-a]pyridines is proposed. The method includes the reaction of 2-chloro-3,5-dinitropyridine with the corresponding 5-substituted tetrazoles. The resulting compounds react with anhydro bases of ?- and ?-methylazinium salts to give zwitterionic ?-adducts.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1999, 48 (7), 1391.pdf
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7.
Инвентарный номер: нет.
   
   K 81


    Krasnov, V. P.
    Nucleophilic substitution of halogen in 4-halo derivatives of glutamic acid 3. High pressure effect on the stereochemical result of the reaction [Electronic resource] / V. P. Krasnov, M. A. Koroleva, G. L. Rusinov // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1996. - Vol. 45, № 3. - P543-544
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Reactions of diastereomeric dialkyl N-phthaloyl-4-haloglutamates withpara-anisidine were studied at high pressure, and an additional confirmation of the exactS N2 mechanism of the reactions was obtained. Quantitative parameters of the relative reactivity of the diastereomers were found in various solvents, which made it possible to perform the desired synthesis of products of diastereomeric substitution. kg]Key words kw]glutamic acid kw]diastereoselectivity kw]nucleophilic substitution kw]reaction rate constant kw]high pressure.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1996, 45 (3), 543.pdf
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8.
Инвентарный номер: нет.
   
   S 83


   
    Stereoselective cyclization of alkyl N-phthaloyl-4-bromoglutamates to cyclopropane derivatives [Electronic resource] / V. P. Krasnov, M. A. Koroleva, T. V. Matveeva, E. A. Zhdanova, A. N. Grishakov, N. A. Klyuev // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2001. - Vol. 50, № 4. - P644-648. - Bibliogr. : p. 648 (17 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CYCLIZATION -- CYCLOPROPANE-1,2-DICARBOXYLIC ACID -- GLUTAMIC ACID -- TRANSESTERIFICATION
Аннотация: The kinetics of the reactions of alkyl N-phthaloyl-4-bromoglutamates with Et3N and KOH was investigated. The reactions proceed stercospecifically to form alkyl 1-phthalimido-cyclopropane-r-1-2-dicarboxylates. In alcohols, the reactions are accompanied by transesterification. The concerted mechanism accounting for the stereospecificity of these reactions is proposed.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2001, 50 (4), 644.pdf
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9.
Инвентарный номер: нет.
   
   S 69


   
    S-N(H)-Reactions of triazolo[4,3-b]- and tetrazolo[1,5-b]-1,2,4-triazines with methylene-active carbonyl compounds [Electronic resource] / G. L. Rusinov, N. A. Itsikson, D. G. Beresnev, M. I. Kodess, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2001. - Vol. 50, № 11. - P2183-2187
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Unsubstituted triazolo[4,3-b]- and tetrazolo[1,5-b]-1,2,4-triazines react with carbanions generated from dimedone and barbituric acid to give adducts of a C-nucleophile with the heterocyclic system through the C=N double bond. The adducts can be oxidized under mild conditions into products of nucleophilic hydrogen substitution. Analogous adducts with carbanions produced in the reactions of ethyl cyanoacetate and ethyl malonate with ButOK proved to be unstable; in this case, the title azolotriazines immediately yield products of nucleophilic hydrogen substitution in position 7. Tautomerism of the S N H products obtained is discussed.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2001, 50 (11), 2183.pdf
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10.
Инвентарный номер: нет.
   
   S 90


   
    Study of the inf luence of the alkyl ester group in (S)-valinates on diastereoselectivity of their condensation with N-acetylphenylalanine by the mixed anhydride method [Electronic resource] / E. A. Zhdanova, N. Z. Solieva, L. Sh. Sadretdinova, M. A. Ezhikova, M. I. Kodess, V. P. Krasnov // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2006. - Vol. 55, № 5. - P925-927. - Bibliogr. : p. 927 (15 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
5(4H)-OXAZOLONES -- AMINO ACIDS -- DIASTEREOSELECTIVITY -- DIPEPTIDES -- DYNAMIC KINETIC RESOLUTION -- RACEMIZATION
Аннотация: The dynamic kinetic resolution in the synthesis of alkyl N-acetylphenylalanyl (S)-valinates was studied by the mixed anhydride method. The structure of the ester group of the amino component appeared to exert no substantial effect on the diastereoselectivity of the reaction.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2006, 55 (5), 925.pdf
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