Results 41 to 50 of about 976 (164)

Solubility Challenges and Strategies for Organic Sodium‐Ion Batteries: Status and Perspectives

Small, Volume 22, Issue 12, 25 February 2026.
Organic sodium‐ion batteries (OSIBs) have garnered interest due to their low cost, abundant resources, and sustainability. However, the solubility of organic materials in aprotic electrolytes results in electrode deterioration, active material loss, and poor cycling stability.
Ying Qi, Huaping Zhao, Lizhuang Chen, Yong Lei   +3 more
wiley   +1 more source

An intramolecular inverse electron demand Diels–Alder approach to annulated α-carbolines

Beilstein Journal of Organic Chemistry, 2012
Intramolecular inverse electron demand cycloadditions of isatin-derived 1,2,4-triazines with acetylenic dienophiles tethered by amidations or transesterifications proceed in excellent yields to produce lactam- or lactone-fused α-carbolines.
Zhiyuan Ma, Feng Ni, Grace H. C. Woo, Sie-Mun Lo, Philip M. Roveto, Scott E. Schaus, John K. Snyder   +6 more
doaj   +1 more source

Conjugates of 8-[2,2’-bipyridinyl]coumarins as potential chemosensors for Al3+, Cu2+, Cd2+, Zn2+ ions: synthesis and photophysical properties

Chimica Techno Acta, 2023
In this work, we report the synthesis of novel coumarin-bipyridine conjugates using a sequence of C–C coupling reaction between 5,7-dimethoxycoumarins and 3-pyridyl-6-aryl-1,2,4-triazines followed by the Boger reaction with norbornandiene to obtain 8-[2 ...
Ainur D. Sharapov, Ramil F. Fatykhov, Igor A. Khalymbadzha, Dmitry S. Kopchuk, Igor L. Nikonov, Anastasiya P. Potapova, Yaroslav K. Shtaitz, Pavel A. Slepukhin   +7 more
doaj   +1 more source

Recent Advances in Bioconjugation of Aromatic Amino Acid Residues by a Reactivity‐Guided Approach

The Chemical Record, Volume 26, Issue 2, February 2026.
This review highlights recent advances in the bioconjugation of aromatic amino acids residues, focusing on strategies that leverage their inherent chemical reactivity to enable precise and versatile modifications of biomacromolecules, illustrating relevant applications.
Bruno M. da S. Santos, Lívia C. R. M. da Frota, Thais G. Silva, Fernanda G. Finelli   +3 more
wiley   +1 more source

(Hetero)Arene Ring-Fused [1,2,4]Triazines

Molbank
Synthetic access to a five (hetero)arene ring-fused 3-phenyl[1,2,4]triazines is described. The resulting compounds were characterized via 1H and 13C NMR, IR, UV–vis spectroscopy and HRMS.
Mahshid Teymouri, Anna Pietrzak, Paulina Bartos   +2 more
doaj   +1 more source

Unsymmetrical β‐Fused Blatter Radical Zinc Phthalocyanines

Chemistry – A European Journal, Volume 32, Issue 4, 23 January 2026.
Herein, we report the first synthesis of a new class of β‐fused Blatter–Zn phthalocyanines featuring a persistent radical π‐system, π–π‐driven crystal packing, and SOMO‐centered redox behavior. Single‐crystal X‐ray diffraction shows packing motifs dominated by centrosymmetric π‐π dimers.
Adrián Hernández, Georgia A. Zissimou, Javier Ortiz, Andreas Kourtellaris, Christos P. Constantinides, Daniel B. Lawson, Ziqi Hu, Eugenio Coronado, Panayiotis A. Koutentis, Ángela Sastre‐Santos   +9 more
wiley   +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

Solvated Electron‐Driven Stepwise ORR on Na‐Metalated N‐Rich Carbon Nitride for Efficient Photocatalytic H2O2 Production

Advanced Science, Volume 13, Issue 1, 5 January 2026.
A sodium‐metalated, nitrogen‐rich carbon nitride (PH‐C3N5‐Na) is developed to generate solvated electrons (SEs) under visible‐light irradiation via a eutectic NaCl/LiCl molten salt‐assisted method. The in situ generated SEs drive a stepwise oxygen reduction via •O2−. Thus, an exceptional quantum efficiency of 54.4% (420 nm) is achieved.
Jianan Feng, Weilin Qin, Li Shangguan, Hui Zhang, Jianhua Sun, Shunping Sun, Yu Guo, Weiwei Lei   +7 more
wiley   +1 more source

Decoding Urease Inhibition: A Comprehensive Review of Inhibitor Scaffolds

ChemMedChem, Volume 21, Issue 2, January 2026.
Representative functional groups known for urease inhibition are reviewed within diverse scaffolds using structure–activity analyses to identify features associated with high inhibitory activity. Urease is a metalloenzyme produced by a wide range of organisms and plays a critical role in nitrogen microbial metabolism by catalyzing the hydrolysis of ...
Nuno Martinho, Natália Aniceto
wiley   +1 more source