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Общее количество найденных документов : 10
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1.
Инвентарный номер: нет.
   
   T 82


   
    Transformations of 4-hydroxy-5,6,7,8-tetrafluorocoumarin derivatives with monoamines [Text] / K. V. Shcherbakov, Ya. V. Burgart, V. I. Saloutin, O. N. Chupakhin // Heterocycles. - 2006. - Vol. 69, № 1. - P319-331
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TETRAFLUOROCOUMARIN

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2.
Инвентарный номер: нет.
   
   П 99


   
    5,6,7,8-Tetrafluoro-4-hydroxycoumarin derivatives in reactions with o-phenylenediamine [Electronic resource] / Ya. V. Burgart, K. V. Shcherbakov, V. I. Saloutin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 6. - P1237-1239. - Библиогр. : с. 1239 (5 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TETRAFLUORO -- HYDROXYCOUMARINES
Аннотация: The reactions of 5,6,7,8-tetrafluoro-4-hydroxycoumarin derivatives with o-phenylenediamine occur with pyrone heterocycle cleavage and formation of substituted benzodiazepin-2-ones. 5,6,7,8-Tetrafluoro-4-hydroxycoumarin affords 4-(3,4,5,6-tetrafluoro-2-hydroxyphenyl)-2,3-dihydro-1H-1,5-benzodiazepin-2-one, 3-acetimidoyl-5,6,7,8-tetrafluoro-4-hydroxycoumarin produces 3-(3,4,5,6-tetrafluoro-2-hydroxybenzoyl)-4-methyl-1,2-dihydro-1H-1,5-benzodiazepin-2-one, and 3-acetyl-5,6,7,8-tetrafluoro-4-hydroxycoumarin yields both these heterocycles.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (6), 1237-1239.pdf
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3.
Инвентарный номер: нет.
   
   S 53


    Shcherbakov, K. V.
    Transformations of 3-(1-amidoethylidene)-5,6,7,8-tetrafluorobenzopyran-2,4-dione with hydrazines [Text] / K. V. Shcherbakov, Ya. V. Burgart, V. I. Saloutin // Heterocycles. - 2009. - Vol. 78, № 2. - P347-356. - Bibliogr. : p. 356 (16 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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4.
Инвентарный номер: нет.
   
   S 53


    Shcherbakov, K. V.
    Transformations of 5,6,7,8-tetrafluoro-2-ethoxycarbonylchromone under the action of primary amines [Electronic resource] / K. V. Shcherbakov, Ya. V. Burgart, V. I. Saloutin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2009. - Vol. 45, № 5. - P766-772
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
5,6,7,8-TETRAFLUORO -- CHROMONES
Аннотация: 5,6,7,8-Tetrafluoro-2-ethoxycarbonylchromone in aprotic polar solutions formed by nucleophilic aromatic ipso-substitution 7-alkyl(aryl)amino-5,6,8-trifluorochromones. This transformation in ethanol depended on the reactivity of the acting amine: with stronger nucleophiles, aliphatic amines, an opening of the ?-pyrone ring occurred, with aromatic amines 7-monosubstituted chromones were the main products, and the open-chain esters formed in lesser amount

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2009, 45 (5), 766.pdf
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5.
Инвентарный номер: нет.
   
   S 53


    Shcherbakov, K. V.
    Reactions of 5,6,7,8-tetrafluoro-4-hydroxycoumarin derivatives with benzylamine and aniline [Electronic resource] / K. V. Shcherbakov, Ya. V. Burgart, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2006. - Vol. 55, № 7. - P1215-1219
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 5,6,7,8-Tetrafluoro-4-hydroxycoumarin reacted with benzylamine under mild conditions to give a stable salt, while its refluxing with aniline or benzylamine in xylene afforded 5,6,7,8-tetrafluoro-4-phenyl(benzyl)aminocoumarins. Reactions of 3-acetyl(acetimidoyl)-5,6,7,8-tetrafluoro-4-hydroxycoumarins with benzylamine followed different pathways, depending on the solvent. Condensation at the acyl substituent can be accompanied by replacement of the F atom in position 7. 3-Acetylcoumarin formed a salt, while 3-acetimidoylcoumarin yielded a 7-monosubstituted product. 3-Acetyl(acetimidoyl)-5,6,7,8-tetrafluoro-4-hydroxycoumarins reacted with aniline to give only 5,6,7,8-tetrafluoro-4-hydroxy-3-(N-phenylacetimidoyl)coumarin

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2006, 55 (7), 1215-1219.pdf
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6.
Инвентарный номер: нет.
   
   S 53


    Shcherbakov, K. V.
    Reactions of 2(3)-ethoxycarbonyl-5,6,7,8-tetrafluorochromones with methylamine [Electronic resource] / K. V. Shcherbakov, Ya. V. Burgart, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2005. - Vol. 54, № 9. - P2157-2162. - Bibliogr. : p. 2162 (18 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHROMONE -- METHYLAMINE -- NUCLEOPHILIC SUBSTITUTION -- RING OPENING
Аннотация: 2-Ethoxycarbonyl-5,6,7,8-tetrafluorochromone reacts with methylamine differently, depending on the solvent nature and the amount of the amine: in DMSO and MeCN, the fluorine atom at the C(7) atom is initially replaced and then the C(2) and/or C(9) are attacked, while in ethanol, the reaction involves the C(2) atom with opening of the pyrone ring. The reaction of 3-ethoxycarbonyl-5,6, 7,8-tetrafluoro-2-methylchromone with methylamine results, regardless of the solvent, in opening of the chromone ring and the formation of intermediate ethyl 3-(3,4,5,6-tetrafluoro-2-hydroxyphenyl)-2-(1-methylamino)ethylidene-3- oxopropionate, which undergoes intramolecular cyclization to give 5,6,7,8-tetrafluoro-3-(1-methylamino)ethylidene-3,4-dihydro-2H-benzopyran-2, 4-dione.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2005, 54 (9), 2157-2162.pdf
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7.
Инвентарный номер: нет.
   
   S 53


    Shcherbakov, K. V.
    Interaction of fluorinated 4-hydrohycoumarins and 2-ethoxycarbonylchromone with aniline [Text] : доклад, тезисы доклада / K. V. Shcherbakov, Ya. V. Burgart, V. I. Saloutin // 17th International Symposium on Fluorine Chemistry, Shanghai, China, July 24-29 2005 : abstract book. - Shanghai, 2005. - P42 (A-O-09) : рис.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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8.
Инвентарный номер: нет.
   
   S 53


    Shcherbakov, K. V.
    Features of reactions of polyfluorinated ethyl 4-oxo-2-pnenyl-4H-chromene-3-carboxylates with N-nucleophiles [Electronic resource] / K. V. Shcherbakov, Ya. V. Burgart, V. I. Saloutin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2013. - Vol.49, №5. - С. 719-729. - Библиогр.: с. 729 (13 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BENZYLAMINE -- CHROMONE-COUMARIN REARRANGEMENT -- TETRAFLUOROFLAVONES
Аннотация: Ethyl 5,6,7,8-tetrafluoro-4-oxo-2-phenyl-4H-chromene-3-carboxylate in reactions with primary amines is characterized by a chromone-coumarin rearrangement affording 3-[amino(phenyl)methylene]-6,7,8-trifluoro-2H-chromene-2,4(3H)-diones, and ethyl 4-oxo-2-phenyl-5,6,7,8-tetrafluoro-4H-chromene-3-carboxylate characteristically adds the amine at the C2 site of the flavone furnishing 3-amino-3-phenyl-2-(2,3,4,5-tetrafluoro-6-hydroxybenzoyl)acrylates which depending on the substituent at the amino group are capable of intramolecular cyclization into 3-[(alkylamino)(phenyl)methylene]-5,6,7,8-tetrafluoro-2H-chromene-2,4(3H)-dione or in the case of benzylamine substituent, into ethyl 1-benzyl-5-hydroxy-4-oxo-2-phenyl-6,7,8-trifluoro-1,4-dihydroquinoline-3-carboxylate. The main process in the reaction of tri- and tetrafluoroflavones with secondary amine (1-methylpiperazine) is the nucleophilic substitution at the C7 of flavone. In the reaction with 1,2-phenylenediamine 3-[(2-aminophenyl)amino]-3-phenyl-2-(2,3,4,5-tetrafluoro-6-hydroxybenzoyl)acrylate was obtained from tetrafluoroflavone and 1H-benzimidazol-2-yl(3,4,5-trifluoro-2-hydroxyphenyl)methanone, from trifluoroflavone

\\\\expert2\\NBO\\Russian Journal of Organic Chemistry\\2013, 49, (5), 719-729.pdf
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9.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis and anticorrosive properties of alkylammonium polyfluoro-3-(ethoxycarbonyl)-2-oxo-2h-chromen-4-olates [Electronic resource] / K. V. Shcherbakov, T. I. Gorbunova, Ya. V. Burgart, V. I. Saloutin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2014. - Vol.50, №1. - С. 66-71. - Bibliogr. : p. 71 (14 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AMINES -- ALKYLAMMONIUM
Аннотация: Reactions of ethyl polyfluoro-4-hydroxy-2-oxo-2H-chromene-3-carboxylates with amines under mild conditions afforded alkylammonium polyfluoro-3- (ethoxycarbonyl)-2-oxo-2H-chromen-4-olates which efficiently inhibited hydrochloric acid corrosion of mild steel at low concentrations (10 -4-10-5 M).

\\\\expert2\\nbo\\Russian Journal of Organic Chemistry\\2014, 50, (1), 66-71.pdf
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10.
Инвентарный номер: нет.
   
   N 89


   
    Novel 3-acetyl-2-methyl-polyfluorochromones in reactions with amines and esters of amino acids [Electronic resource] / K. V. Shcherbakov, D. N. Bazhin, Ya. V. Burgart, V. I. Saloutin // Chemistry of Heterocyclic Compounds. - 2015. - Vol. 51, № 11/12. - С. 961-968. - Bibliogr. : p. 967-968 (21 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AMINE -- ACYLATION -- CHROMONE
Аннотация: Novel 3-acetyl-2-methyl-polyfluoro-4Н-chromen-4-ones were obtained via one-pot acylation of acetylacetone with polyfluorobenzoyl chlorides. These chromones were shown to form N-substituted 3-amino-1-[2-hydroxy(polyfluoro)phenyl]but-2-en-1-ones in reaction with aliphatic primary amines, esters of amino acids, and aqueous ammonia via opening of the pyrone ring and deacylation

\\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\2015, v.51, N 11-12, p. 961-968.pdf
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