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 1-10    11-20   21-25 
1.
Инвентарный номер: нет.
   


   
    Self-condensation of 2-(ethoxalylmethyl)chromones into new derivatives of isotetronic acid / V. Y. Sosnovskikh, D. A. Vetyugova, A. V. Safrygin, O. S. Eltsov, P. A. Slepukhin // Mendeleev Communications. - 2018. - Vol. 28, № 4. - P434-436
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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2.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of a new class of carbinol linked bis-heterocycles via the reaction of 2-(trifluoroacetyl)chromones with indoles and pyrroles / A. V. Safrygin, R. A. Irgashev, M. A. Barabanov, V. Ya. Sosnovskikh // Tetrahedron. - 2016. - Vol. 72. - С. 227-233. - Bibliogr. : p. 233 (25 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SYNTHESIS -- CARBINOL LINKED BIS-HETEROCYCLES -- INDOLES

\\\\expert2\\nbo\\Tetrahedron\\2016, v. 72 , p. 227-233.pdf
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3.
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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4.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of 2-(trifluoroacetyl)chromones and their reactions with 1,2-diamines / A. V. Safrygin, R. A. Irgashev, M. A. Ezhikova, M. I. Kodess, G. -V. Roeschenthaler, V. Ya. Sosnovskikh // Tetrahedron. - 2015. - Vol. 71. - С. 1822-1830
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SYNTHESIS -- 2-(TRIFLUOROACETYL)CHROMONES -- 1,2-DIAMINES

\\\\expert2\\NBO\\Tetrahedron\\2015, v. 71 , p. 1822.pdf
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5.
Инвентарный номер: нет.
   
   R 30


   
    Reaction of 2-(trifluoromethyl)chromones with pyridoxal: Formation of 1-benzopyranooxepino- and 1-benzopyranopyranopyridines / V. Ya. Sosnovskikh, V. Yu. Korotaev, A. Yu. Barkov, A. A. Sokovnina, M. I. Kodess // Journal of Fluorine Chemistry. - 2012. - Vol.141. - С. 58-63
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ALCOHOLIC HYDROXY GROUP -- PHENYL HYDROXY GROUP -- PYRIDOXAL
Аннотация: Pyridoxal undergoes oxa-Michael initiated ring closure with 2-(trifluoromethyl)chromones giving 11a,13-dihydro-6H-1-benzopyrano[3′,2′:6,7]oxepino[3,4-c]pyridin-6-ones and 6H,11aH-1-benzopyrano[3′,2′:5,6]pyrano[2,3-c]pyridin-6-ones. Participation of alcoholic hydroxy group of pyridoxal in the initial oxa-Michael addition leads to the former product and that of the phenyl hydroxy group to the later one

\\\\Expert2\\nbo\\Journal of Fluorine Chemistry\\2012, v. 141, p.58.pdf
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6.
Инвентарный номер: нет.
   
   S 73


    Sosnovskikh, V. Ya.
    Reactions of 3-cyanochromones with primary amines: structures of the products [Electronic resource] / V. Ya. Sosnovskikh, V. S. Moshkin, M. I. Kodess // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 3. - P615-625
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
3-CYANOCHROMONES -- PRIMARY AMINES -- RECYCLIZATION
Аннотация: Reactions of 3-cyanochromones with primary aromatic amines in boiling benzene gave mixtures of Z- and E-3-arylamino-2-(2-hydroxyaroyl)acrylonitriles and 2-amino-3-(aryl-iminomethyl)chromones. The latter can easily be obtained in the individual state when the reaction is carried out in the presence of triethylamine. In the case of primary aliphatic amines, the open-chain reaction product immediately undergoes cyclization into 3-alkyliminomethyl-2-aminochromones. The structures of the products were examined by 1D and 2D 1H, 13C, and 15N NMR spectroscopy in DMSO-d6 and CDCl3

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2009, 59 (3), 615-625.pdf
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7.
Инвентарный номер: нет.
   
   S 73


    Sosnovskikh, V. Ya.
    Structural revision in the reactions of 3-cyanochromones with primary aromatic amines. Improved synthesis of 2-amino-3-(aryliminomethyl)chromones [Text] / V. Ya. Sosnovskikh, V. S. Moshkin, M. I. Kodess // Tetrahedron Letters. - 2009. - Vol. 50, № 47. - P6515-6518
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 3-Cyanochromones react with primary aromatic amines to give 2-amino-3-(aryliminomethyl)chromones as the sole products or as their mixtures with Z- and E-3-anilino-2-salicyloylacrylonitriles, depending on the reaction conditions. With aliphatic amines, 2-amino-3-(alkyliminomethyl)chromones are obtained in good yields. The reaction of 3-cyanochromone with o-phenylenediamine is reinvestigated and proof for the product structure and a possible reaction pathway are presented

\\\\Expert2\\nbo\\Tetrahedron Letters\\2009, v. 50, p.6515.pdf
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8.
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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9.
Инвентарный номер: нет.
   
   S 73


    Sosnovskikh, V. Ya.
    A reinvestigation of the reactions of 3-substituted chromones with hydroxylamine. Unexpected synthesis of 3-amino-4H-chromeno[3,4-d]isoxazol-4-one and 3-(diaminomethylene)chroman-2,4-dione [Text] / V. Ya. Sosnovskikh, V. S. Moshkin, M. I. Kodess // Tetrahedron Letters. - 2008. - Vol. 49, № 48. - P6856-6859
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Reactions of 3-substituted chromones (3-formylchromone, 3-formylchromone-3-oxime, and 3-cyanochromone) with hydroxylamine in alkaline medium were reinvestigated, and a proof of structures and a probable reaction pathway are presented. Syntheses of 2-aminochromone-3-carboxamide, 3-amino-4H-chromeno[3,4-d]isoxazol-4-one, and 3-(diaminomethylene)chroman-2,4-dione were developed

\\\\Expert2\\nbo\\Tetrahedron Letters\\2008, v. 49, p.6856.pdf
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10.
Инвентарный номер: нет.
   
   R 30


   
    Reaction of 3-(polyfluoroacyl)chromones with hydrazines: new regioselective synthesis of RF-containing pyrazoles [Electronic resource] / V. Ya. Sosnovskikh, R. A. Irgashev, V. S. Moshkin, M. I. Kodess // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2008. - Vol. 57, № 10. - P2146-2155
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Reactions of 3-(polyfluoroacyl)chromones with hydrazine, methyl-and phenylhydrazines proceed by the mechanism of nucleophilic 1,4-addition with subsequent pyrone ring opening and heterocyclization at the polyfluoroacyl group to 4-(2-hydroxyaroyl)-3-polyfluoro-alkylpyrazoles or at the aroyl group to 4-polyfluoroalkyl-2,4-dihydrochromeno[4,3-c]pyrazol-4-ols. Regiochemistry of the products was established based on the data of 2D-experiments HSQC, HMBC, and NOESY and X-ray diffraction study

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2008, 57 (10), 2146.pdf
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