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 Найдено в других БД:Публикации Чарушина В.Н. (6)
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 1-10    11-20   21-27 
1.
Инвентарный номер: нет.
   
   T 82


   
    Transformations of 5-diazo derivatives of 1,3-dimethyl-6-hydrazinouracil - new synthetic approaches to novel pyrimidine-derivatives [Electronic resource] / Y. A. Azev, O. L. Guselnikova, O. N. Chupakhin // Mendeleev Communications. - 1994. - N 6. - P208-209
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 1,3-Dimethyl-6-hydrazinouracil 1 gives hydrazones 2 with the corresponding aldehydes. Heating of 6-hydrazinouracil 1 in ethanol in the presence of hyrochloric acid results in the formation of N1, N2-bis(1,3-dimethyl-2,6-dioxopyrimid-4-yl)hydrazine 3, which gives the diazo derivative 4 on treatment with 2,4-diazido-6-cyanomethoxy-s-triazine in DMSO in the presence of triethylamine et room temperature

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2.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis, Structure, and Keto-Enol Tautomerism of 3-R1-5,5-R2,R2-6-R3-2,3,5,6-Tetrahydropyran-2,4-diones [Electronic resource] / V. V. Shchepin, M. I. Kodess, Yu. Kh. Sazhneva, N. Yu. Russkikh // Russian Journal of General Chemistry. - 2005. - Vol. 75, № 10. - P1622-1627
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Ethyl esters of 2,4-dibromo-2-R1-4-R2-3-oxopentanoic and -hexanoic acids react with zinc and aliphatic or aromatic aldehydes under the conditions of the Reformatskii reaction to give 3-R1-5,5-R2, R2-6-R3-2,3,5,6-tetrahydropyran-2,4-diones, which are obtained in three forms: keto, enol with enolization of the keto group, and enol with enolization of the ester group. The keto form is isolated by crystallization from a mixture of CCl4 and petroleum ether; the first enol form, from MeOH, EtOH, and polar aprotic solvents; and the second enol form, from CHCl3. The second enol form is oxidized in DMSO to form a keto compound containing a hydroxy group at the 3-position of the heteroring

\\\\Expert2\\nbo\\Russian Journal of General Chemistry\\2005, V. 75, N 10, p.1622.pdf
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3.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of N-substituted 7-aryl-5-methyl-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxamides / V. L. Gein, T. M. Zamaraeva, N. V. Nosova, M. I. Vakhrin, P. A. Slepukhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2012. - Vol.48, №3. - С. 419-422
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SYNTHESIS -- 6-CARBOXAMIDES -- PYRIMIDINE
Аннотация: Three-component reaction of N-methyl- or N,N-diethyl-3-oxobutanamide with aromatic aldehydes and tetrazol-5-amine monohydrate gave the corresponding N-substituted 7-aryl-5-methyl-4,7-dihydrotetrazolo-[1,5-a]pyrimidine-6-carboxamides

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2012, 48 (3), 419-422.pdf
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4.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of alkyl 4-aryl-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3- carboxylates [Electronic resource] / V. L. Gein, M. I. Kazantseva, L. F. Gein, P. A. Slepukhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2014. - Vol.50, №2. - С. 240-243. - Bibliogr. : p. 214 (4 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ALKYL ACETOACETATES -- AROMATIC ALDEHYDES -- AMMONIUM ACETATE
Аннотация: Reactions of alkyl acetoacetates, aromatic aldehydes, ammonium acetate, and 1,3-cyclohexanedione afford alkyl 4-aryl-2-methyl-5-oxo-1,4,5,6,7,8- hexahydroquinoline-3-carboxylates. The structure of compounds obtained was established with the help of IR, 1H NMR, and mass spectra and by X-ray diffraction analysis

\\\\expert2\\nbo\\Russian Journal of Organic Chemistry\\2014, 50, (2), 240-243.pdf
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5.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of 7-alkyl(aryl)-6-alkoxycarbonyl-5-fluoroalkyl-1,2,4-tri(tetr)azolo[1,5-a]pyrimidines [Electronic resource] / M. V. Pryadeina, Ya. V. Burgart, V. I. Saloutin, M. I. Kodess, E. N. Ulomskii, V. L. Rusinov // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2004. - Vol. 40, № 6. - P902-907. - Библиогр. : с. 906 (14 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Fluorinated 3-oxo esters react with aldehydes and 3-amino-1,2,4-triazoles and 5-aminotetrazoles to give, respectively, 7-alkyl(aryl)-6-alkoxycarbonyl-5-fluoroalkyl-1,2,4-triazolo[1,5-a]pyrimidines and -tetra-zolo[1,5-a]pyrimidines. The same heterocyclic products can be obtained by reaction of 2-benzylidene-2-fluoroacyl esters with the corresponding aminoazoles

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2004, 40 (6), 902-907.pdf
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6.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of 5-and 7-fluoroquinazolin-4(1H)-ones [Electronic resource] / A. A. Layeva, E. V. Nosova, G. N. Lipunova, T. V. Trashakhova, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2007. - Vol. 56, № 9. - P1821-1827
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 5-Fluoroquinazoline-2,4-diones and their 2-thio analogs were obtained from 6-fluoroanthranilic acid. Two convenient routes to 5-fluoroquinazolin-4-ones involved cyclocondensation of 6-fluoroanthranilamide with acid chlorides (anhydrides) or with aromatic (heterocyclic) aldehydes. A method for the synthesis of 7-fluoroquinazolin-4-one from 2,4-difluorobenzoic acid was proposed

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2007, 56 (9), 1821.pdf
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7.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of 2,6-bis(fluoroalkyl)-2,6-dihydroxytetrahydro-2H-pyran-3,5-dicarboxylates from aldehydes and fluorinated beta-oxo esters in the presence of ionic liquid-K2CO3 as catalytic system [Electronic resource] / S. G. Zlotin, G. V. Kryshtal’, G. M. Zhdankina, A. V. Ignatenko, Ya. V. Burgart, V. I. Saloutin, O. N. Chupakhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2010. - Vol. 46, № 4. - P468-473 : рис., табл. - Bibliogr. : p. 472-473 (35 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
DICARBOXYLATES -- ALDEHYDES -- ESTERS -- CATALYTIC SYSTEM
Аннотация: An efficient procedure has been developed for the synthesis of 4-substituted 2,6-bis(fluoroalkyl)-2,6-dihydroxytetrahydro-2H-pyran-3,5-dicarboxylates by reactions of aldehydes with fluorine-containing ?-oxo esters in heterogeneous catalytic system 1-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4]-K2CO3 activated by ultrasound. The system retains its catalytic activity for three reaction cycles.

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2010, 46 (4), 468-473.pdf
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8.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis and photophysical properties of 2-styrylquinazolin-4-ones [Electronic resource] / T. V. Trashakhova, E. V. Nosova, M. S. Valova, P. A. Slepukhin, G. N. Lipunova, V. N. Charushin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2011. - Vol. 47, № 5. - P753-761. - Bibliogr. : p. 761 (16 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: trans-2-Styryl-substituted 3H-, 3-phenyl-, and 3-naphthylquinazolin-4-ones and their 6,7-difluoro derivatives were synthesized by condensation of appropriate 2-methylquinazolin-4-ones with aromatic aldehydes or by the transformation of the heterocycle of 2-methyl-3,1-benzoxazin-4-one under the action of benzylidenephenylamines

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2011, 47 (5), 753-761.pdf
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9.
Инвентарный номер: нет.
   
   S 98


   
    Syntheses of novel 4-polyfluoroalkyl-substituted 5,6-oligomethylene pyrimidines [Text] / D. V. Sevenard, O. G. Khomutov, O. V. Koryakova, V. V. Sattarova, M. I. Kodess, J. Stelten, I. Loop, E. Lork, K. I. Pashkevich, G. -V. Roeschenthaler // Synthesis. - 2000. - № 12. - P1738-1748
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 2-Acylcycloalkanones having polyfluoroalkyl groups react with guanidine, urea, thiourea, methylisothiourea, benzamidine, guanylthiourea, dicyanodiamide, and trifluoroacetylurea by Lewis-acid catalysis to form the corresponding 5,6-oligomethylene pyrimidines. A decrease in the yields along with increase of polyflyoroalkyl substituent length in the molecule of the starting 1,3-diketone was observed in the case of reagents with lower nucleophilicity (urea, thiourea, dicyanodiamide). The pyrimidines obtained from aromatic aldehydes showed E-configuration with respect to the arylidene double bond. Tautomeric structures as a function of the substituent in 2 position in the pyrimidine ring both in liquid and solid state were investigated by X-ray diffraction, IR and NMR spectroscopy.

\\\\expert2\\nbo\\Synthesis\\2000, № 12. p.1738.pdf
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10.
Инвентарный номер: нет.
   
   R 30


   
    Reactions of fluorine-containing 3-oxo esters with aldehydes [Text] / M. V. Pryadeina, O. G. Kuzueva, Ya. V. Burgart, V. I. Saloutin, K. A. Lyssenko, M. Yu. Antipin // Journal of Fluorine Chemistry. - 2002. - Vol. 17, № 1. - P1-7
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Fluoroalkylcontaining 3-oxo esters react with aldehydes to form 2-benzylidene-3-fluoroacyl-esters or 4-aryl(alkyl)-3,5-dialkoxycarbonyl-2,6-dihydroxy-2,6-di(fluoroalkyl)tetrahydropyranes depending on the conditions. Ethyl pentafluorobenzoylacetoacetate with benzaldehyde affords 3,5-diethoxy-carbonyl-4-phenyl-2-pentafluorophenyl-7,8,9,10-tetrafluoro-4,5-dihydrobenzo[b]oxacin-6-one

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