Results 71 to 80 of about 29,220 (210)

Efficient Synthesis of 3,7-Diaryl-1,4-dihydro[1,2,4]triazolo[5,1-c][1,2,4]triazines

, 2012
An efficient and versatile protocol for the synthesis of novel 3,7-diaryl-substituted 1,4-dihydro[1,2,4]triazolo[5,1-c][1,2,4]triazines is described, via alkylation/cyclization of 3,5-dibromo-1H-1,2,4-triazole, followed by Suzuki coupling with ...
S. Dallavalle, S. Aiwale
core   +1 more source

15N-Labelling and structure determination of adamantylated azolo-azines in solution

Beilstein Journal of Organic Chemistry, 2017
Determining the accurate chemical structures of synthesized compounds is essential for biomedical studies and computer-assisted drug design. The unequivocal determination of N-adamantylation or N-arylation site(s) in nitrogen-rich heterocycles ...
Sergey L. Deev, Alexander S. Paramonov, Tatyana S. Shestakova, Igor A. Khalymbadzha, Oleg N. Chupakhin, Julia O. Subbotina, Oleg S. Eltsov, Pavel A. Slepukhin, Vladimir L. Rusinov, Alexander S. Arseniev, Zakhar O. Shenkarev   +10 more
doaj   +1 more source

Enaminones as Building Blocks for the Synthesis of Substituted Pyrazoles with Antitumor and Antimicrobial Activities

Molecules, 2011
Novel N-arylpyrazole-containing enaminones 2a,b were synthesized as key intermediates. Reactions of 2a,b with active methylene compounds in acetic acid in the presence of ammonium acetate afforded substituted pyridine derivatives 5a-d.
Sayed M. Riyadh
doaj   +1 more source

Rhenium Complexes as Antimicrobial Agents

Helvetica Chimica Acta, Volume 109, Issue 5, May 2026.
Rhenium complexes are stepping into the fight against superbugs. Our new review explores how these metallic complexes could inspire the next generation of antimicrobial therapies. ABSTRACT The escalating crisis of antimicrobial resistance (AMR) necessitates the exploration of unconventional therapeutic scaffolds.
Fabio Zobi, Gozde Demirci, Marija Rasic
wiley   +1 more source

Metal‐Free Covalent Organic Frameworks for Photocatalytic CO2 Reduction

ChemistryEurope, Volume 4, Issue 4, April 2026.
This review presents an environmentally sustainable strategy to address the critical issue of escalating atmospheric CO2 levels. It explores the application of metal‐free covalent organic frameworks in a photocatalytic approach, offering a green and efficient strategy for carbon dioxide reduction and contributing to climate change mitigation.
Supriti Dutta, Akhtar Alam, Pekham Chakrabortty, Pradip Pachfule   +3 more
wiley   +1 more source

The separation of americium(III) from europium(III) by two new 6,6'-bistriazinyl-2,2'-bipyridines in different diluents

, 2011
The synthesis and extraction of americium(III) and europium(III) from aqueous nitric acid solutions by the new BTBP ligands 6,6’-bis(5,5,7,7- tetramethyl-5,7-dihydrofuro[3,4-e]-1,2,4-triazin-3-yl)-2,2’-bipyridine (Cy5-O-Me4-BTBP), and 6,6’-bis(5,5,7,7 ...
Petr Distler, Lewis, Frank, Lewis, Frank W., Harwood, Laurence, Distler, Petr, Hudson, Michael, Michael J. Hudson, Harwood, Laurence M., Jan John, Hudson, Michael J., John, Jan, Laurence M. Harwood, Frank W. Lewis   +12 more
core   +1 more source

Synthesis of 3,4-dihydro-1,8-naphthyridin-2(1H)-ones via microwave-activated inverse electron-demand Diels–Alder reactions

Beilstein Journal of Organic Chemistry, 2014
Substituted 3,4-dihydro-1,8-naphthyridin-2(1H)-ones have been synthesized with the inverse electron-demand Diels–Alder reaction from 1,2,4-triazines bearing an acylamino group with a terminal alkyne side chain.
Salah Fadel, Youssef Hajbi, Mostafa Khouili, Said Lazar, Franck Suzenet, Gérald Guillaumet   +5 more
doaj   +1 more source

Organic and Metallacages for Chemical Sensing: Progress in Water‐Compatible Systems

Advanced Sensor Research, Volume 5, Issue 3, March 2026.
Supramolecular cages function as three‐dimensional receptors for selective molecular recognition and sensing, and this review outlines design principles for water‐stable architectures, key analyte‐ and medium‐dependent challenges, recent water‐compatible examples (including polymer‐integrated systems), and future opportunities for cage‐based ...
Rabia Zahid, Martina Viola, Maria Vittoria Balli, Guillermo Moreno‐Alcántar, Pierre Picchetti   +4 more
wiley   +1 more source

Synthesis, Properties, Applications and Challenges of Multicomponent Doped Organic Room Temperature Phosphorescence Materials

Aggregate, Volume 7, Issue 3, March 2026.
The multi‐component doping strategy, involving self‐assembly, host‐guest systems, and crystal engineering, has gained attention for its simplicity, cost‐effectiveness, structural diversity, and adjustable room‐temperature phosphorescence (RTP). This review summarizes and evaluates the progress in creating RTP materials using this strategy, highlighting
Zhenjie Zhou, Huizhong Wang, Junxiong Yao, Tian Wang, Jianhua Liu, Xiaohua Cao, Qiang Feng, Bingbing Yue, Dianyuan Wang, Jianguo Wang, Huanan Huang   +10 more
wiley   +1 more source

One-Pot Acid-Catalyzed Ring-Opening/Cyclization/Oxidation of Aziridines with N-Tosylhydrazones: Access to 1,2,4-Triazines

, 2017
A new, three-step, telescoped reaction sequence for the regioselective conversion of N-tosyl hydrazones and aziridines to 3,6-disubstituted and 3,5,6-trisubstituted 1,2,4-triazines is described. The process involves an efficient nucleophilic ring opening
Lorène Crespin, Lorenzo Biancalana (2572165), David C. Blakemore, Crespin L., Tobias Morack, Ley S. V., Morack T., Biancalana L., Lorène Crespin (3748822), David C. Blakemore (465247), Steven V. Ley, Tobias Morack (3748825), Blakemore D. C., Lorenzo Biancalana, Steven V. Ley (532034)   +14 more
core   +1 more source