Zobrazeno 1 - 10 of 18 pro vyhledávání: '"Nikolai Beliaev"'
1
Akademický článek
Suzuki–Miyaura coupling of aryl fluorosulfates in water: a modified approach for the synthesis of novel coumarin derivatives under mild conditions
Autor: Muthipeedika Nibin Joy, Ayyiliath Meleveetil Sajith, Sougata Santra, Dhananjay Bhattacherjee, Nikolai Beliaev, Grigory V. Zyryanov, Oleg S. Eltsov, Karickal Raman Haridas, Mohammed B. Alshammari
Publikováno v: Journal of Taibah University for Science, Vol 18, Iss 1 (2024)
We herein report a modified, eco-friendly and atom-economical approach for the synthesis of a series of novel coumarin analogues via Suzuki–Miyaura cross-coupling methodology under mild conditions. The utilization of coumarin fluorosulfate as an at
Externí odkaz: https://doaj.org/article/f5024df60d98487b83553557ca8c91e5
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3
Akademický článek
Crystal structure of dimethyl[(E)-2-(1-methyl-5-nitro-1H-imidazol-4-yl)ethenyl]amine
Autor: Nikolai Beliaev, Pavel Slepukhin
Publikováno v: IUCrData, Vol 1, Iss 1, p x152488 (2016)
The title compound, C8H12N4O2, crystallized with two independent molecules in the asymmetric unit. The bonds lengths of the enamine moiety show strong conjugation in the N—C=C system. In the crystal, the two independent molecules are linked by C—
Externí odkaz: https://doaj.org/article/58a667e741244757bbe397f6d2f29be2
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4
Akademický článek
(E)-N-[Cyclopentyl(morpholin-4-yl)methylidene]-4-fluorobenzenesulfonamide
Autor: Ilya Efimov, Pavel Slepukhin, Nikolai Beliaev, Vasiliy Bakulev
Publikováno v: IUCrData, Vol 1, Iss 1, p x160013 (2016)
The title compound, C16H21FN2O3S, was obtained from the reaction between sulfonyl azide, cyclohexanone and morpholine. The bond lengths at the amidine N—C—N grouping are similar [1.326 (3) and 1.338 (3) Å], indicating significant conjugation. Th
Externí odkaz: https://doaj.org/article/82aad84ebe134c2a80930217696976a9
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6
A facile access for the synthesis of 1-hetero(aryl)-1,2,3-triazoles linked to equol under mild conditions
Autor: Tetyana Beryozkina, Vasiliy A. Bakulev, Nikolai Beliaev, Muthipeedika Nibin Joy
We herein report a convenient methodology for the synthesis of 1-hetero(aryl)-1,2,3-triazoles linked with equol by utilizing copper-catalyzed azide-alkyne cycloaddition reaction under exceptionally mild conditions. The salient features of this develo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e896d47c15b81f420aa4e3a07f7969be
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7
Synthesis of 1,2,3-triazoles linked into chains with other carbo- and heterocycles by a reaction between β-azolyl enamines and azides
Autor: Ilya V. Efimov, Vasiliy A. Bakulev, Tetyana Beryozkina, Nikolai Beliaev
Publikováno v: Chemistry of Heterocyclic Compounds. 54:167-172
The reactions of β-azolyl enamines with azides proceeded under solvent-free conditions in the absence of base at 110°С by one of the possible routes, selectively forming 1,4-disubstituted 1,2,3-triazoles. The proposed reaction mechanism includes c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::160a41060f6ff6126f7f51b2af3bff53
https://doi.org/10.1007/s10593-018-2249-3
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8
Design and synthesis of imidazoles linearly connected to carbocyclic and heterocyclic ringsviaa 1,2,3-triazole linker. Reactivity of β-azolyl enamines towards heteroaromatic azides
Autor: Ilya V. Efimov, Nikolai Beliaev, Tetyana Beryozkina, Wim Dehaen, Gert Lubec, Marsel Z. Shafikov, Vasiliy A. Bakulev
Publikováno v: New Journal of Chemistry. 42:7049-7059
Herein we report an investigation on the 1,3-dipolar cycloaddition of 5-azido-4-nitroimidazoles to β-azolylenamines and the subsequent transformations of the intermediate 1,2,3-triazolines. 5-Azido-1-methyl-4-nitroimidazoles were combined with β-az
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef99e8be6c0fa8f99ed0c43f8df625bc
https://doi.org/10.1039/c7nj04243d
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9
A catalyst-free one-step synthesis of N-pyrimidinyl amidines from endocyclic enamines and 4-azidopyrimidines
Autor: Tetyana Beryozkina, Vasiliy A. Bakulev, Gert Lubec, Nikolai Beliaev
Publikováno v: Mendeleev Communications. 29:50-52
Novel N-pyrimidyl amidines of alycyclic acids were obtained in one step from of 4-azidopyrimidines and endocyclic enamines. The reaction mechanism involves [3 + 2]-addition of azide at the double bond followed by cleavage of thus formed 1,2,3-triazol
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::657b0679583a2767b0a1a0b685b30600
https://doi.org/10.1016/j.mencom.2019.01.015
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