Results 51 to 60 of about 20,186 (218)

Efficient Regioselective Iodination of Pyrazole Derivatives Mediated by Cadmium(II) Acetate

ChemistryOpen
The present study focuses on the iodination of pyrazoles mediated by cadmium (II) acetate. The objects of research were compounds with pyrazole rings substituted by N‐propargyl, C, N‐alkyl groups.
Dr. Nina G. Hobosyan, Dr. Kristine V. Balyan, Lusine A. Movsisyan, Dr. Varduhi S. Hovsepyan, Armen G. Ayvazyan, Dr. Henrik A. Panosyan, Prof. Dr. Hovhannes S. Attaryan, Dr. Hmayak B. Sargsyan, Haykanush R. Pogosyan   +8 more
doaj   +1 more source

The Jekyll and Hyde Nature of Tetrazoles in Polymer Science: From Intrinsic Electronic Duality to Programmable Macromolecular Function

Angewandte Chemie International Edition, EarlyView.
Tetrazoles are reframed as substitution‐programmable heterocycles rather than static functional groups in polymer chemistry. By linking electronic identity to synthetic strategy and polymer architecture, this mini‐review establishes a design framework for translating tetrazole duality into predictable macromolecular function.
Meryem S. Akdemir, Hatice Mutlu
wiley   +1 more source

(E)-1-(3,4-Dimethoxyphenyl)-3-(1,3-diphenyl-1H-pyrazol-4-yl)prop-2-en-1-one

IUCrData
In the title compound, C26H22N2O3, the dihedral angle between the benzene and pyrazole rings of the chalcone unit is 88.3 (1)°. The pyrazole ring has two attached phenyl rings that form dihedral angles with the pyrazole ring of 22.6 (2) and 40.0 (1)°. In
Jiha Sung
doaj   +1 more source

BODIPY‐based J‐aggregates: From supramolecular chemistry to NIR bioimaging and phototherapies

Bulletin of the Korean Chemical Society, EarlyView.
BODIPY dyes form ordered J‐aggregates through controlled supramolecular self‐assembly, producing narrow, red‐shifted absorption bands with small Stokes shifts. This review highlights design strategies governing J‐aggregation, structure–property relationships, and applications in sensing, bioimaging, and phototherapy, guiding functional BODIPY‐based ...
Pooja Sharma, Yeonkyeong Lee, Youngmi Kim   +2 more
wiley   +1 more source

Microwave versus ultrasound assisted synthesis of some new heterocycles based on pyrazolone moiety

Journal of Saudi Chemical Society, 2010
Different pyrazolone derivatives were prepared by microwave irradiation and ultrasound assisted methods besides the traditional ones. They were used for synthesis of some derivatives of spiropiperidine-4,4′-pyrano[2,3-c]pyrazole, dihydropyrano[2,3-c ...
Aamal A. Al-Mutairi, Fatma E. M. El-Baih, Hassan M. Al-Hazimi   +2 more
doaj   +1 more source

2-{5-[2-(4-Nitrophenoxy)phenyl]-1-phenyl-1H-pyrazol-3-yl}phenol

Acta Crystallographica Section E, 2010
In the title compound, C27H19N3O4, the phenol and pyrazole rings are almost coplanar [dihedral angle = 0.95 (12)°] due to an intramolecular O—H...N hydrogen bond, whereas the phenyl ring is tilted by 40.81 (7)& ...
Ali Haider, Zareen Akhter, Michael Bolte, Muhammad Zia-ul Haq, Humaira M. Siddiqi   +4 more
doaj   +1 more source

The Stabilization of High‐Nitrogen Systems: 10 Catenated Nitrogen Chain

Chemistry – A European Journal, EarlyView.
Improving the understanding of high‐nitrogen materials. ABSTRACT High‐nitrogen materials have attracted intense interest in recent decades due to their unique chemical, physical, and biological properties. Stabilizing high‐nitrogen materials is often challenging as they become more unstable with increasing nitrogen catenation and nitrogen mass ...
Nicholas F. Scherschel, Thomas R. Talbot IV, Matthias Zeller, Davin G. Piercey   +3 more
wiley   +1 more source

Synthetic Strategies for Activity‐Based Probes to Decode Ubiquitin‐Like Modifiers

Chemistry – A European Journal, EarlyView.
ABSTRACT Ubiquitin‐like proteins (Ubls) such as SUMO, NEDD8, ISG15, URM1, UFM1, FAT10, ATG8/ATG12, and FUBI are essential regulators of cellular homeostasis, controlling processes from protein stability and trafficking to immune signaling and autophagy.
Saibal Chanda, Alan Pham, SreeNidhi Karnati, Natalia Soto Rodriguez, Alyssa Toner, Wenshe Ray Liu   +5 more
wiley   +1 more source

Recent Advances in Pyrazole-Based Cholinesterase Inhibitors: Medicinal Chemistry Perspectives from 2020 to 2025

Pharmaceuticals
Pyrazole derivatives have attracted considerable interest in medicinal chemistry as adaptable frameworks for developing cholinesterase inhibitors, owing to their advantageous physicochemical properties and structural flexibility.
Lalsu Yeysin, Deniz Akın, Süleyman Çalışkan, Elvan Hasanoğlu Özkan, Hamada Hashem, Suleyman Akocak, Stefan Bräse, Servet Çete   +7 more
doaj   +1 more source

1,1′-Bis(1-acetyl-5-methyl-1H-pyrazol-3-yl)ferrocene

Acta Crystallographica Section E, 2011
The title compound, [Fe(C11H11N2O)2], crystallizes with two independent molecules in the asymmetric unit which have have different conformations. In one molecule, the two ferrocene cyclopentadienyl rings are fully eclipsed and the two pyrazole rings are ...
Bei-Bei Zhu, Yao-Cheng Shi, Wen-Bin Shen, Qian-Kun Li   +3 more
doaj   +1 more source