Results 11 to 20 of about 2,636 (208)
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 +6 more
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Expedient synthesis of 1,2,4-triazinyl substituted benzo[c]coumarins via double oxidation strategy
Chimica Techno Acta, 2023 Herein, we report a convenient one-pot synthesis of 1,2,4-triazinyl derivatives of benzocoumarins. The proposed approach consists in the nucleophilic addition of tetrahydrobenzo annulated dimethoxycoumarin to 1,2,4-triazines followed by double oxidation ...
Ramil F. Fatykhov +6 more
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Beilstein Journal of Organic Chemistry, 2021 Two series of functionalized imidazothiazolotriazine derivatives were synthesized via the condensation of imidazo[4,5-e]-1,2,4-triazine-3-thiones with acetylenedicarboxylic acid dimethyl and diethyl esters (DMAD and DEAD) and subsequent base-catalyzed ...
Alexei N. Izmest’ev +4 more
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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 +2 more
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Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2022 The combination of pyrazole and 1,2,4-triazole fragments in one structure makes it possible to achieve some success in creating potential biologically active compounds. Various factors contribute to this process.
S. O. Fedotov, A. S. Hotsulia
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Eco-friendly plant growth and development regulators on the basis of derivatives 1,2,4-triazines [PDF]
BIO Web of Conferences, 2021 The article considers the application of plant growth and development regulators, in particular, derivatives of asymmetric triazines. A method for obtaining hexahydro-1,2,4-triazinone-3 is given.
Builova E.A. +4 more
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Copper- and Silver-Catalyzed Reactions of Active Methylene Isocyanides: Facile Access to Highly Substituted Five- and Six-Membered Heterocycles. [PDF]
ChemistryThis review summarizes recent advances in copper‐ and silver‐catalyzed reactions of active methylene isocyanides for the synthesis of highly substituted five‐ and six‐membered heterocycles. Emphasis is placed on [3+n] cycloadditions, annulations, and asymmetric strategies, highlighting current limitations and future opportunities in heterocycle ...
George J, Oh K.
europepmc +2 more sources
Predicting Solid-State Heats of Formation of Newly Synthesized Polynitrogen Materials by Using Quantum Mechanical Calculations [PDF]
, 2008 We present density functional theory level predictions and analysis of the basic properties of newly synthesized high-nitrogen compounds together with 3,6-bis(2H-tetrazol-5-yl)-1,2,4,5-tetrazine (BTT) and 3,3′-azobis(6-amino-1,2,4,5-tetrazine) (DAAT ...
Abou-Rachid, H. +5 more
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3-Methylsulfanyl-5-phenyl-1,2,4-triazine [PDF]
Acta Crystallographica Section E Structure Reports Online, 2014 In the molecule of the title compound, C10H9N3S, the dihedral angle between the triazine and phenyl rings is 11.77 (7)°. In the crystal, molecules are linked by π–π stacking interactions [centroid–centroid distances = 3.7359 (3) and 3.7944 (4) Å], forming layers parallel to thebcplane.
Salha Hamri +4 more
openaire +3 more sources
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 ...
Deary, Michael +4 more
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