Results 11 to 20 of about 2,785 (181)

Synthesis of imidazo[4,5-e][1,3]thiazino[2,3-c][1,2,4]triazines via a base-induced rearrangement of functionalized imidazo[4,5-e]thiazolo[2,3-c][1,2,4]triazines

Beilstein Journal of Organic Chemistry, 2023
A series of imidazo[4,5-e][1,3]thiazino[2,3-c][1,2,4]triazines was synthesized via a cascade sequence of hydrolysis and skeletal rearrangement of imidazo[4,5-e]thiazolo[2,3-c][1,2,4]triazin-7(8H)-ylidene)acetic acid esters in methanol upon treatment with
Dmitry B. Vinogradov, Alexei N. Izmest’ev, Angelina N. Kravchenko, Yuri A. Strelenko, Galina A. Gazieva   +4 more
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Bioactive Pyrrolo[2,1-f][1,2,4]triazines: Synthesis, Molecular Docking, In Vitro Cytotoxicity Assay and Antiviral Studies

Chemistry, 2023
A series of 2,4-disubstituted pyrrolo[2,1-f][1,2,4]triazines containing both aryl and thienyl substituents were synthesized by exploiting the 1,3-cycloaddition reaction of N(1)-ethyl-1,2,4-triazinium tetrafluoroborates with dimethyl ...
Nataliya N. Mochulskaya, Svetlana K. Kotovskaya, Ilya I. Butorin, Mikhail V. Varaksin, Valery N. Charushin, Vladimir L. Rusinov, Yana L. Esaulkova, Alexander V. Slita, Polina A. Ilyina, Vladimir V. Zarubaev   +9 more
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A convenient synthetic approach to 5-(het)arylhydrazine substituted 1,2,4-triazines

Chimica Techno Acta, 2020
A convenient synthesis of 1,2,4-triazines bearing the moieties of (hetero)arylhydrazines at the position of C5 of the 1,2,4-triazine core is reported.
A. P. Krinochkin, M. R. Guda, A. Rammohan, D. S. Kopchuk, G. V. Zyryanov, V. L. Rusinov, O. N. Chupakhin   +6 more
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SYNTHESIS, AND BIOLOGICAL EVALUATION OF NEWLY SUNTHESIZED TRIAZOLOTRIAZINES AND TRIAZOLOTRAIZINES DERIVATIVES [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2018
Novel 8-(4-fluorophenyl)-6,6-diphenyl-3-(pyrimidin-4-yl) -5,6,7,8-tetrahydro-6l5-[1,2,4]triazolo [4,3-a][1,3,5]diazaphosphinin-6-ol(5),8-(4-fluorophenyl)-6-phenyl-3-(pyrimidin-4-yl)-7,8-dihydro [1,2,4]triazolo [4,3-b][1,2,4]triazine (6), 8-(4 ...
Hameed M. Mohammed
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2-(5,6-Diphenyl-1,2,4-Triazin-3-yl)pyridinium Dichloroiodate (I)

Molbank, 2023
2-(5,6-diphenyl-1,2,4-triazin-3-yl)pyridinium dichloroiodate (I) (1) was synthesized by reacting 3-(2-pyridyl)-5,6-diphenyl-1,2,4-triazine with ICl in dichloromethane solution.
M. Carla Aragoni, Vito Lippolis, Annalisa Mancini, Anna Pintus, Enrico Podda, James B. Orton, Simon J. Coles, Massimiliano Arca   +7 more
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2-(3-Chloro-5,6-diphenyl-2,5-dihydro-1,2,4-triazin-5-yl)-2-methylpropanenitrile

Acta Crystallographica Section E, 2012
The title compound, C19H17ClN4, was obtained from the reaction of 3-chloro-5,6-diphenyl-1,2,4-triazine with isobutyronitrile in the presence of lithium diisopropylamide as an unexpected product of covalent addition of isobutyronitrile carbanion to the C ...
Ewa Wolińska, Zbigniew Karczmarzyk, Andrzej Rykowski, Zofia Urbańczyk-Lipkowska, Przemysław Kalicki   +4 more
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An effective one-pot access to polynuclear dispiroheterocyclic structures comprising pyrrolidinyloxindole and imidazothiazolotriazine moieties via a 1,3-dipolar cycloaddition strategy

Beilstein Journal of Organic Chemistry, 2016
An effective and highly regio- and diastereoselective one-pot method for the synthesis of new polynuclear dispiroheterocyclic systems with five stereogenic centers (dispiro[imidazo[4,5-e]thiazolo[3,2-b]-1,2,4-triazine-6,3′-pyrrolidine-2′,3′′-indoles ...
Alexei N. Izmest’ev, Galina A. Gazieva, Natalya V. Sigay, Sergei A. Serkov, Valentina A. Karnoukhova, Vadim V. Kachala, Alexander S. Shashkov, Igor E. Zanin, Angelina N. Kravchenko, Nina N. Makhova   +9 more
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Reactions of 3-amino-1,2,4-triazine with coupling reagents and electrophiles

Heterocyclic Communications, 2022
Analogs of a new heterocyclic system were obtained from the reactions of 3-amino-1,2,4-triazine with coupling reagents such as boronic acids, and terminal alkynes in the presence of a palladium catalyst.
Bvumbi Mpelegeng Victoria, Nemudzivhadi Anza Imanuel, Sengane Musiiwa Victoria, Moleele Simon Mnyakeni   +3 more
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The Reaction of 1,6-Diamino-4-aryl-2-oxo-1,2-dihydropyridine- 3,5-Dicarbonitriles with Certain Electrophilic Agents

Chemistry Proceedings, 2023
The reaction of 1,6-diamino-2-oxo-1,2-dihydropyridine-3,5-dicarbonitriles, which are easily available through the reaction of cyanoacetohydrazide with arylmethylene malononitriles, with ninhydrin leads to the formation of novel dihydroindeno[1,2-e]pyrido[
Alexei A. Dolganov, Alexandra R. Chikava, Victor V. Dotsenko   +2 more
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Ring Transformation of Oxazolo [3,2-b][1,2,4] Triazines [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1995
6-Methyl-2-phenyl-7H-Oxazolo [3,2-b] [1,2,4] triazine (1) undersent ting transformation on treatment with ammonia and primary amines to afford the corresponding imidazol [1,2-b][1,2,4] triazine (2).
Majid M. Heravi, Mehdi Bakavoli, Zohreh Sadjadi Hashemi   +2 more
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