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 Найдено в других БД:Публикации Чарушина В.Н. (14)
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Общее количество найденных документов : 39
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 1-10    11-20   21-30   31-39 
1.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of ethyl 3-oxo-2-(3,4,5-trifluoro-2,6-dimethoxybenzoyl)butyrate [Electronic resource] / S. P. Kisil', M. I. Kodess, Ya. V. Burgart, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2000. - Vol. 49, № 6. - P1090-1092
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Ethyl acetoacetate was acylated with 3,4,5-trifluoro-2,6-dimethoxybenzoyl chloride to give, for the first time, ethyl 3-oxo-2-(3,4,5-trifluoro-2,6-dimethoxybenzoyl)butyrate and its copper chelate. The title compound was used for the synthesis of 6,7,8-trifluoro-5-hydroxy-2-methylchromone, 1-(3,4,5-trifluoro-2,6-dimethoxyphenyl)butane-1,3-dione, and its copper chelate

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2000, 49 (6), 1090.pdf
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2.
Инвентарный номер: нет.
   
   T 82


   
    Transformations of 1,2,4-triazines in reactions with nucleophiles: IV. Nucleophilic substitution of hydrogen in 1,2,4-triazine 4-oxides under acylation conditions [Text] / V. L. Rusinov, D. N. Kozhevnikov, I. S. Kovalev, O. N. Chupakhin, G. G. Aleksandrov // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2000. - Vol. 36, № 7. - P1050-1060. - Bibliogr. : p. 1060 (13 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
3-SUBSTITUTED 6-PHENYL-1,2,4-TRIAZINE 4-OXIDES -- AROMATIC NUCLEOPHILES -- AUTOAROMATIZATION -- KINETIC REGIOSELECTIVITY -- THERMODYNAMIC REGIOSELECTIVITY

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3.
Инвентарный номер: нет.
   
   F 70


   
    Fluoroaryl containing beta,beta-dioxoesters in the synthesis of fluorobenzopyran-4(2)-ones [Text] / S. P. Kisil', Ya. V. Burgart, V. I. Saloutin, O. N. Chupakhin // Journal of Fluorine Chemistry. - 2001. - Vol. 108, № 2. - P125-131
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Fluoroaryl containing ?,??-dioxoesters and their copper(II) chelates have been prepared by acylation of ethyl acetoacetate with 2,6-dimethoxy-3,4,5-trifluorobenzoyl, 2-methoxy-3,4,5,6-tetrafluorobenzoyl and pentafluorobenzoyl chlorides. Cyclization of these ?,??-dioxoesters leads to formation of substituted fluorochromones. Depending on conditions, 2-methyl-5-methoxy-6,7,8-trifluoro-3-ethoxycarbonylchromone hydrolyzed to 5-hydroxy-2-methyl-6,7,8-trifluorochromone or 5-hydroxy-2-methyl-6,7,8-trifluorochromone-3-carboxylic acid. The same chromone reacts with morpholine to form a seven-substituted product and ammonium hydroxide to give 3-iminoacetyl-4-hydroxy-5-methoxy-6,7,8-trifluorocoumarin. Hydrolysis of the latter affords 3-acetyl-4-hydroxy-5-methoxy-6,7,8-trifluorocoumarin. Ethyl-2-(2,6-dimethoxy-3,4,5-trifluorobenzoyl)-3-oxobutanoates undergoes ketone-splitting to 1-(2,6-dimethoxy-3,4,5-trifluorophenyl)-1,3-butandione????

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4.
Инвентарный номер: нет.
   
   A 10


   
    A route to ethyl alfa-pentafluorobenzoyl-beta-oxobutanoate via its copper(II) chelate [Text] / Ya. V. Burgart, S. P. Kisil', V. I. Saloutin, O. N. Chupakhin // Mendeleev Communications. - 2001. - Vol. 11, № 2. - P76
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Ethyl 2-pentafluorobenzoyl-3-oxobutanoate has been prepared by the acylation of ethyl acetoacetate with pentafluorobenzoyl chloride via a copper(II) chelate

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5.
Инвентарный номер: нет.
   
   D 62


   
    Direct modification of benzoannelated crown ethers with 1,2,4-triazin-5(2H)-one moieties [Text] / G. L. Rusinov, D. G. Beresnev, N. A. Itsikson, O. N. Chupakhin // Heterocycles. - 2001. - Т. 55, № 12. - P2349-2359
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient method for one-step coupling of benzoannelated crown ethers with 1,2,4-triazinones based on the reaction of nucleophilic addition to unsubstituted carbon atom of the triazine ring has been worked out. It has been shown that the reaction of 3-substituted 1,2,4-triazin-5(2H)-ones (1) with benzocrown ethers (benzo-12-crown-4, benzo-15-crown-5, benzo-18-crown-6) in the presence of acetic or trifluoroacetic anhydride is accompanied by acylation of triazine ring and results in formation of 3-(1-acyl-5-oxo-1,4,5,6-tetrahydro-1,2,4-triazin-6-yl)benzocrown ethers (7-12). The latters were converted to 3-(5-oxo-2,5-dihydro-1,2,4-triazin-6-yl)benzocrown ethers (18-20) using two alternative routes: the elimination of acetic or trifluoroacetaldehyde or the deacylation followed by the oxidation of the 1,4,5,6-tetrahydro derivatives (13-15).

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6.
Инвентарный номер: нет.
   
   K 49


    Kisil', S. P.
    New Fluoroaryl-containing beta,beta'-Dioxoesters in the Synthesis of Fluorobenzopyran-2(4)-ones [Electronic resource] / S. P. Kisil', Ya. V. Burgart, V. I. Saloutin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2001. - Vol. 37, № 10. - P1455-1462
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: For the first time were obtained ethyl 2-(2-methoxy-3,4,5,6-tetrafluorobenzoyl)-3-oxobutanoate and ethyl 2-pentafluorobenzoyl-3-oxobutanoate and their copper chelates. The compounds were prepared by acylation of ethyl acetoacetate with 2-methoxy-3,4,5,6-tetrafluoro- and pentafluorobenzoyl chlorides. Cyclization of these ,'-dioxoesters afforded substituted chromones. 2-Methyl-5-methoxy-6,7,8-trifluoro-3-ethoxycarbonylchromone hydrolyzes depending on reaction conditions either to 5-hydroxy-2-methyl-6,7,8-trifluorochromone or to 5-hydroxy-2-methyl-6,7,8-trifluorochromone-3-carboxylic acid. Reaction with morpholine provided 7-substituted product, and with aqueous ammonia as a result of rearrangement forms 3-acetimidoyl-4-hydroxy-5-methoxy-6,7,8-trifluorocoumarin. Hydrolysis of the latter yields 3-acetyl-4-hydroxy-5-methoxy-6,7,8-triflu

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2001, 37 (10), 1455.pdf
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7.
Инвентарный номер: нет.
   
   K 46


   
    Kinetic resolution of (±)-2-methyl-1,2,3,4-tetrahydroquinoline and (±)-2-methylindoline [Electronic resource] / V. P. Krasnov, G. L. Levit, I. N. Andreeva, A. N. Grishakov, V. N. Charushin, O. N. Chupakhin // Mendeleev Communications. - 2002. - Vol. 12, № 1. - P27-28
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The acylation of racemic 2-methyl-1,2,3,4-tetrahydroquinoline and 2-methylindoline by (S)-naproxen acyl chloride resulted in their kinetic resolution with the predominant formation of (S,S)-diastereoisomeric amides (de 78–76%), recrystallisation of which followed by acid hydrolysis gave individual (S)-isomers of heterocyclic amines????

\\\\expert2\\nbo\\Mendeleev Communications\\2002, v.12, N 1. p.27.pdf
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8.
Инвентарный номер: нет.
   
   E 54


   
    Enantiomers of 3-amino-1-methyl-1,2-dicarba-closo-dodecaborane [Text] / V. P. Krasnov, G. L. Levit, V. N. Charushin, M. I. Kodess, V. N. Kalinin, O. N. Chupakhin // Tetrahedron: Asymmetry . - 2002. - Vol. 13, № 16. - P1833-1835. - Bibliogr. : p. 1835 (6 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The enantiomers of 3-amino-1-methyl-1,2-dicarba-closo-dodecaborane were prepared by means of resolution of the racemic mixture via acylation by (S)-naproxen chloride followed by separation and subsequent acid hydrolysis of each of the diastereoisomeric amides. Partial racemization of enantiomeric 3-aminocarboranes was observed during acid hydrolysis

\\\\Expert2\\nbo\\Tetrahedron Asymmetry\\2002, v.13, p.1833.pdf
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9.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of 4-acyl(alkoxycarbonyl)-5-fluoroalkyl-3,5-dihydroxyfuran-2(5H)-ones [Electronic resource] / M. V. Pryadeina, Ya. V. Burgart, K. I. Suslova, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2002. - Vol. 51, № 9. - P1727-1730
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 4-Acyl(alkoxycarbonyl)-5-fluoroalkyl-3,5-dihydroxyfuran-2(5H)-ones were obtained for the first time by the reactions of fluoroalkyl-containing 1,3-diketones and 3-oxo esters with oxalyl chloride

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2002, 51 (9), 1727.pdf
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10.
Инвентарный номер: нет.
   
   K 46


   
    Kinetic resolution of (±)-2,3-dihydro-3-methyl-4H-1,4-benzoxazine, (±)-2-methyl-1,2,3,4-tetrahydroquinoline and (±)-2-methylindoline using N-tosyl-(S)-prolyl chloride [Text] / V. P. Krasnov, G. L. Levit, I. M. Bukrina, I. N. Andreeva, L. Sh. Sadretdinova, M. A. Koroleva, M. I. Kodess, V. N. Charushin, O. N. Chupakhin // Tetrahedron: Asymmetry . - 2003. - Vol. 14, № 14. - P1985-1988. - Bibliogr. : p. 1988 (6 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Acylation of racemic 2,3-dihydro-3-methyl-4H-1,4-benzoxazine, 2-methyl-1,2,3,4-tetrahydroquinoline and 2-methylindoline with N-tosyl-(S)-prolyl chloride resulted in their kinetic resolution with the predominant formation of (R,S)-diastereoisomeric amides, des being 80, 66 and 38%, respectively. Recrystallisation of the amides followed by acid hydrolysis gave individual (R)-enantiomers of heterocyclic amines

\\\\Expert2\\nbo\\Tetrahedron Asymmetry\\2003, v.14, p.1985.pdf
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