Results 101 to 110 of about 45,356 (184)

Sequential Michael Addition and Enamine-Promoted Inverse Electron Demanding Diels–Alder Reaction upon 3‑Vinyl-1,2,4-triazine Platforms

open access: yes, 2016
An original one-pot Michael addition-ihDA/rDA sequence was achieved from 3-vinyl-1,2,4-triazine platforms used as unprecedented Michael acceptors. This sequence provides a novel access to functionalized [2,3]-fused pyridine derivatives via a unique ...
Franck Suzenet (1503118)   +3 more
core   +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

Synthesis and structure elucidation of novel fused 1,2,4-triazine derivatives as potent inhibitors targeting CYP1A1 activity

open access: yes, 2012
Synthesis and structure elucidation of new series of novel fused 1,2,4-triazine derivatives 3a-3f, 4a-4i and 6a-6b and their inhibitory activities are presented.
Asal, A. M.,   +18 more
core   +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  

The triazine herbicides : 50 years revolutionizing agriculture /

open access: yes, 2008
Over the past 50 years, triazines have made a great impact on agriculture and world hunger by assisting in the development of new farming methods, providing greater farming and land use capabilities, and increasing crop yields.
McFarland, Janis E.   +2 more
core  

1,3,5-Triazine-based analogues of purine: From isosteres to privileged scaffolds in medicinal chemistry

open access: yes, 2014
Purines can be considered as the most ubiquitous and functional N-heterocyclic compounds in nature. Structural modifications of natural purines, particularly using isosteric ring systems, have been in the focus of many drug discovery programs.
Felicia Phei Lin Lim (6818477)   +1 more
core  

SYNTHESIS OF SELENAZOL0[3,2-b] [ 1,2,4] TRIAZINE AND SELENAZOLO [2,3-C] [I ,2,4] TRIAZINE [PDF]

open access: yes, 1995
6-Methyl- 1,2,4-triazine-3-(2H)-selenone-5(4H)-one(l) reacts in the presence of base with phenacyl bromide to give a mixture of compounds (2) and (3). This mixture is dehydrated in the presence of H,SO, to give 3-phenyl-6 methyl-7H-selenazolo[3,2-b] [I ...

core  

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

open access: yes, 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.   +11 more
core  

Annelation of the 1,2,4-Triazine Core to 2,3-Benzodiazepine

open access: yesЖурнал органічної та фармацевтичної хімії
A one-pot, stepwise method for the annelation of the 1,2,4-triazine core to the seven-membered 2,3-benzodiazepine ring via the interaction of the corresponding 2,3-benzodiazepin-1-yl- or 2,3-benzodiazepin-4-ylhydrazines with α-ketoesters has been ...
Natalia M. Bohdan   +4 more
doaj   +1 more source

Estimating Soil Erosion and Fuel Use Changes and Their Monetary Values with AGSIM: A Case Study for Triazine Herbicides [PDF]

open access: yes
This technical report describes a method to use the AGSIM policy model to estimate changes in soil erosion and diesel fuel consumption for tillage that result from agricultural policy changes.
Mitchell, Paul D.
core  

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