Results 61 to 70 of about 2,785 (181)

SYNTHETIC STUDIES IN THE 6H-[1,2,4] TRIAZINO [3,4-b] [ 1,3,4] THIADIAZINES [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1996
4-Amino-6-methyl- 1,2,4-triazine-3(2H)-thione-5-0ne (1) was condensed with propargyl bromidein the presence of sodium rnethoxide to afford 3-propargylmercapto- 4-arnino-6-rnethyl-1,2,4-triazin-5-one(2) .
doaj  

Synthesis of 6-(2-Methoxynaphthyl)-2,3-dihydro-1,2,4-triazine-3-thione as a New Reagent for Spectrophotometric Determination of Copper

open access: yesInternational 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   +4 more
doaj   +1 more source

Structures and Chemical Equilibria of Some N-Heterocycles Containing Amide Linkages

open access: yesMolecules, 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   +3 more
doaj   +1 more source

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).

open access: yesActa 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   +4 more
doaj   +1 more source

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]

open access: yesIranian 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   +3 more
doaj  

Synthesis and Structure-Activity Relationship of Some New Thiophene-Based Heterocycles as Potential Antimicrobial Agents

open access: yesMolecules, 2016
Several new pyrazole, pyridine, [1,2,4]triazolo[1,5-α]pyrimidine, benzimidazo[1,2-a]pyrimidine and 1,2,4-triazolo[3,4-c][1,2,4]triazine derivatives incorporating a thiophene moiety were synthesized from (E)-ethyl 5-(3-(dimethylamino)acryloyl)-4-phenyl-2-(
Yahia Nasser Mabkhot   +4 more
doaj   +1 more source

Determination of pKa of triazolo[5,1-c][1,2,4]triazines in non-aqueous media by potentiometric titration

open access: yesChimica Techno Acta
In this work, for the first time, an approach was suggested for determining the pKa of triazolo[5,1-c][1,2,4]triazine compounds in N,N-dimethylformamide using potentiometric titration.
Alexandra V. Ivoilova   +9 more
doaj   +1 more source

Discovery of pyrrolo[2,1-f][1,2,4]triazine-based inhibitors of adaptor protein 2-associated kinase 1 for the treatment of pain. [PDF]

open access: yesMed Chem Res, 2023
Dzierba CD   +30 more
europepmc   +1 more source

SYNTHESIS OF OXAZOLO [3, 2-b] 1, 2, 4- TRIAZINES A NOVEL HETEROCYCLIC SYSTEM [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1990
The synthesis of 6- methyl- 2- phenyl- 7H- oxazolo [3,2-b] 1,2,4-Triazine- 7-one (6, R=Ph) and its 2-P- bromophenyl analogue to the two members of a new heterocyclic system is ...
doaj  

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