Results 91 to 100 of about 51,319 (173)

Iridium(iii) complexes of 1,2,4-triazines as potential bioorthogonal reagents: metal coordination facilitates luminogenic reaction with strained cyclooctynes [PDF]

, 2019
In this paper we describe unprecedented Ir(III) complexes of 5-(2-pyridyl)-1,2,4-triazine and their reactivity towards the strained cyclooctyne BCN. The coordination of a 1,2,4-triazine ring to an iridium(III) ion drastically increases the speed of the ...
Mantso, Theodora, Sims, Mark T., Kozhevnikov, Valery N., Panayiotidis, Mihalis I., Deary, Michael   +4 more
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Structures and Chemical Equilibria of Some N-Heterocycles Containing Amide Linkages

Molecules, 2003
Structures and chemical equilibria of 5-carboxy-2-thiouracil (1), 5,6-diphenyl-3-hydroxy-1,2,4-triazine (2), 1-phenyl-3-methyl-5-pyrazolone (3) and 2-mercapto-4,6-dimethylpyrimidine hydrochloride (4) are reported.
N. H. Abd El Moneim, R. H. Ahmed, M. Abd El Zaher Mostafa, M. S. Masoud   +3 more
doaj   +1 more source

Synthesis of 5-(2-aminoethoxy)-3-methyl-1-phenyl-1H-pyrazolo[4,3-E][1,2,4]triazine

, 2005
A variety of naturally occurring O- and N-derivatives of 1H-pyrazolo[4,3-e][1,2,4]triazine exhibit an interesting combination of biological activity [1,2].[...
Mariusz Mojzych
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Reactions of 3-phenyl-1,2,4-triazine with some C-nucleophiles [PDF]

, 2013
Dimedone is added at C(5) of 3-phenyl-1,2,4-triazine to give stable dihydro derivative. Its reaction with 1-aryl-3-methylpyrazol-5- ones proceeds with fragmentation affording 1,1,2,2-tetrakispyrazolylethane and amidrazone derivatives.
Ermakova, O. S., Yurii A. Azev, Igor S. Kovalev, Bakulev, V. A., Marina A. Ezhikova, Kovalev, I. S., Mikhail I. Kodess, Vasiliy A. Bakulev, Kodess, M. I., Ol'ga S. Ermakova, Ezhikova, M. A., Azev, Y. A.   +11 more
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Synthesis of 6-(2-Methoxynaphthyl)-2,3-dihydro-1,2,4-triazine-3-thione as a New Reagent for Spectrophotometric Determination of Copper

International Journal of Analytical Chemistry, 2014
A simple, sensitive, accurate, and green spectrophotometric method for the determination of Cu(II) using newly synthesized reagent, 6-(2-methoxynaphthyl)-2,3-dihydro-1,2,4-triazine-3-thione (MNDTT), has been developed.
Maliheh Barazandeh Tehrani, Hutan Ghanbari, Effat Souri, Fazel Shamsa, Mohsen Amini   +4 more
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Synthesis of 6-(Phenanthrene-3-yl)-2,3-dihydro-1,2,4,-triazine-3-thione as a New Reagent for the Non-Extractive Spectrophotometric Determination of Cu(II) [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2018
A simple, sensitive, and non-extractive spectrophotometric method was developed for the determination of copper (II) using a newly synthesized chromogenic reagent, 6-(phenanthrene-3-yl)-1,2,4,-triazine-3-thione(PhDTT), in Tween 80 neutral surfactant.
Marzieh Maskoot, Maliheh Barazandeh Tehrani, Mahdyeh Asaee, Effat Souri   +3 more
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7-Dimethylamino-2-phenyl-1,2,4-triazolo[1,5-a][1,3,5]triazin-5-amine methanol solvatePart 11 in the series `Fused heterocyclic systems with an s-triazine ring'. For Part 10, see Dolzhenko et al. (2008).

Acta Crystallographica Section E, 2008
7-Dimethylamino-2-phenyl-1,2,4-triazolo[1,5-a][1,3,5]triazin-5-amine crystallized with one molecule of methanol to give the title compound, C12H13N7·CH3OH.
Wai Keung Chui, Su Fen Woo, Lip Lin Koh, Geok Kheng Tan, Anton V. Dolzhenko   +4 more
doaj   +1 more source

Biological activity of 1,2,4-triazineand 1,2,4-triazole derivatives [PDF]

, 2005
Triazine and triazole are used in medicine, agriculture and industry and they are also used as effective herbicides and fungicides. In continuation of our studies on condensed heterocycles 1,2,4-triazine and 1,2,4-triazole derivatives were ...
Kowalski, Cezary, Banachiewicz, Jacek, Modzelewska-Banachiewicz, Bożena, Ziółkowska, Grażyna   +3 more
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An overview on the recent developments of 1,2,4-triazine derivatives as anticancer compounds

, 2017
The synthesis, the antitumor activity, the SAR and, whenever described, the possible mode of action of 1,2,4-triazine derivatives, their N-oxides, N,. N'-dioxides as well as the benzo- and hetero-fused systems are reported. Herein are treated derivatives
Barraja, Paola, Barbara Parrino, Carbone, Anna, Anna Carbone, Stella Cascioferro, Montalbano, Alessandra, Patrizia Diana, Diana, Patrizia, Cirrincione, Girolamo, Girolamo Cirrincione, Spanò, Virginia, Virginia Spanò, Parrino, Barbara, Paola Barraja, Cascioferro, Stella, Alessandra Montalbano   +15 more
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Dimethyl 7-Methyl-2-(Pyrrolidine-1-Yl)-4-Phenylpyrrolo[2,1-Ƒ][1,2,4]Triazine-5,6-Dicarboxylate And Dimethyl 7-Methyl-2-(4-R1-Phenyl)-4-(4-R2-Phenyl)Pyrrolo[2,1-Ƒ][1,2,4]Triazine-5,6-Dicarboxylates Exhibiting Antiviral Activity

, 2023
Изобретение относится к области биологически активных соединений, обладающих противовирусным действием в отношении штамма вируса гриппа A/Puerto Rico/8/34 (H1N1) и представляющих собой диметил 7-метил-2-(пирролидин-1-ил)-4-фенилпирроло[2,1-ƒ][1,2,4 ...
Mochulskaya, N. N., Rusinov, V. L., Volobueva, A. S., Волобуева, А. С., Котовская, С. К., Чарушин, В. Н., Русинов, В. Л., Charushin, V. N., Zarubaev, V. V., Мочульская, Н. Н., Зарубаев, В. В., Kotovskaya, S. K.   +11 more
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