Results 21 to 30 of about 64,953 (273)

4-[3-(Isonicotino-yloxy)propoxycarbon-yl]pyridinium diiodidoargentate(I) [PDF]

, 2011
The structure of the title compound, (C15H15N2O4)[AgI2], consists of an organic 4-[3-(isonicotino­yloxy)propoxycarbon­yl]pyridinium cation which has a gauche–gauche (O/C/C/C—O/C/C/C or GG’) conformation and lies on a twofold rotation axis, which passes ...
Bolte, Michael, Iván Brito, López-Rodríguez, Matías, Brito, Iván, Alejandro Cárdenas, Michael Bolte, Vallejos, Javier, Cárdenas, Alejandro, Matías López-Rodríguez, Alejandro Cárdenas, Iván Brito, Javier Vallejos, Matías López-Rodríguez   +12 more
core   +1 more source

Crystal structure of 1-[(1-methyl-5-nitro-1H-imidazol-2-yl)methyl]pyridinium iodide

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title salt, C10H11N4O2+·I−, the asymmetric unit consists of a pyridinium cation bearning a (1-methyl-5-nitro-1H-imidazol-2-yl)methyl group at the N position and an iodide anion.
Roumaissa Belguedj, Abdelmalek Bouraiou, Hocine Merazig, Ali Belfaitah, Sofiane Bouacida   +4 more
doaj   +1 more source

Catalytic reactions of pyridinium and iminium ions

, 2022
Watson, Mary P.The dissertation focuses on transition metal catalysis of cationic species to make C-C bonds. ☐ Chapter 1 describes a nickel-catalyzed Suzuki-Miyaura cross-coupling of benzylic pyridinium salts. The pyridinium salts act as electrophiles in
Guan, Weiye
core   +1 more source

1,4-Dimethylpyridinium iodide

IUCrData, 2017
The title organic salt, C7H10N+·I−, was synthesized from a mixture of 4-methylpyridine and iodomethane in 2-propanol. It crystallized with three independent 1,4-dimethylpyridinium cations and three independent iodide anions in the asymmetric unit. In the
Joshua Deschner, Jack M. Choczynski, Calvin Y. Wong, Kathleen L. Hayes, Ralph R. Crisci, Emily M. Lasher, Joseph Dragonette, Allan Jay P. Cardenas   +7 more
doaj   +1 more source

Recent Progress in Heterocycle Synthesis: Cyclization Reaction with Pyridinium and Quinolinium 1,4-Zwitterions

Molecules, 2023
Heteroarene 1, n-zwitterions are powerful and versatile building blocks in the construction of heterocycles and have received increasing attention in recent years.
Zhen-Hua Wang, Yong You, Jian-Qiang Zhao, Yan-Ping Zhang, Jun-Qing Yin, Wei-Cheng Yuan   +5 more
doaj   +1 more source

Aggregation induced emission by pyridinium–pyridinium interactions

RSC Advances, 2019
Non-covalent intermolecular pyridinium–pyridinium and pyridinium–arene-π system interactions result in aggregation induced emission (AIE).
Kaspars Leduskrasts, Edgars Suna
openaire   +3 more sources

Highly Electron-Deficient Pyridinium-Nitrones for Rapid and Tunable Inverse-Electron-Demand Strain-Promoted Alkyne-Nitrone Cycloaddition to Bicyclo[6.1.0]nonyne [PDF]

, 2019
Highly accelerated inverse-electron-demand strain-promoted alkyne-nitrone cycloaddition (IED SPANC) between a sta- ble cyclooctyne (bicyclo[6.1.0]nonyne (BCN)) and nitrones delocalized into a Cα-pyridinium functionality is reported, with the ...
Alexander M., Polgar, Praveen, Gunawardene, Wilson, Luo, Mark, Workentin, John F., Corrigan   +4 more
core   +1 more source

Crystal structure of (E)-3-{[2-(2,4-dichlorobenzylidene)hydrazin-1-yl]carbonyl}pyridinium chloride trihydrate

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title hydrated salt, C13H10Cl2N3O+·Cl−·3H2O, the organic cation exhibits a dihedral angle of 8.26 (14)° between the mean planes of the pyridinium and benzene rings, and dihedral angles of 8.70 (15) and 15.93 (5)° between the mean planes of the ...
J. Josephine Novina, G. Vasuki, M. Suresh, M. Syed Ali Padusha   +3 more
doaj   +1 more source

Theoretical Analysis of the Heterocyclic [4+2] Cycloaddition Between Pyridinium Ion and Enol Ether

ChemistryOpen, 2021
Dearomative heterocyclic [4+2] cycloaddition between the N‐(2,4‐dinitrophenyl)pyridinium ion of nicotinamide and an enol ether was analyzed by Density Functional Theory (DFT) calculations.
Masataka Nakahara, Prof. Kengo Hanaya, Prof. Takeshi Sugai, Prof. Shuhei Higashibayashi   +3 more
doaj   +1 more source

Synthesis, biological evaluation, and computational studies of N-benzyl pyridinium–curcumin derivatives as potent AChE inhibitors with antioxidant activity

Journal of Enzyme Inhibition and Medicinal Chemistry, 2023
A library of N-benzylpyridinium-based compounds, 7a-j and 8a-j, was designed and synthesised as potential acetylcholinesterase) AChE (inhibitors. An in vitro assay for the synthesised compounds showed that most compounds had significant AChE inhibitory ...
Nafisah M. Al-Rifai, Nemeh M. Al-Khalileh, Jalal A. Zahra, Musa I. El-Barghouthi, Fouad H. Darras   +4 more
doaj   +1 more source