Results 151 to 160 of about 358,569 (255)

Poly(vinylbenzyl Pyridinium Salts) as Novel Sorbents for Hazardous Metals Ions Removal. [PDF]

Molecules, 2022
Wieszczycka K, Filipowiak K, Lewandowska A, Marcinkowska A, Nowicki M.   +4 more
europepmc   +1 more source

Redox‐Active Guanidines

ChemElectroChem, Volume 13, Issue 12, 17 June 2026.
Redox‐active guanidines, comprising guanidino‐functionalized aromatics (GFAs) and redox‐active urea azines (RAAs), are electron donors and strong Lewis and Brønsted bases that are used in several applications. They act as redox‐active ligands in bistable coordination compounds and as reagents in dehydrogenative coupling reactions and proton‐coupled ...
Hans‐Jörg Himmel
wiley   +1 more source

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, Volume 29, Issue 23, 16 June 2026.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source

Synthesis of 3-substituted pyridinium salts

ARKIVOC, 2000
Juliusz Pernak, Jaroslaw Rogoza
doaj   +1 more source

Emerging Trends in Organic Photoreactions Utilizing Disulfides

European Journal of Organic Chemistry, Volume 29, Issue 21, 4 June 2026.
Disulfides are versatile, nontoxic alternatives to metal photocatalysts. This review explores their role as photoactivated thiyl‐radical precursors and bifunctional catalysts (HAT/electron shuttling) in diverse transformations. Strategies for electronic tuning and development into recyclable heterogeneous materials are highlighted for sustainable ...
Sunil Kumar, Bolormaa Bayarkhuu, Hong Y. Cho, Jeehye Byun   +3 more
wiley   +1 more source

Donor-Acceptor Pyridinium Salts for Photo-Induced Electron-Transfer-Driven Modification of Tryptophan in Peptides, Proteins, and Proteomes Using Visible Light. [PDF]

J Am Chem Soc, 2022
Hoopes CR, Garcia FJ, Sarkar AM, Kuehl NJ, Barkan DT, Collins NL, Meister GE, Bramhall TR, Hsu CH, Jones MD, Schirle M, Taylor MT.   +11 more
europepmc   +1 more source

Chemical Syntheses of 3′ and 5′ Phosphorylated Oligonucleotides: An Overview

European Journal of Organic Chemistry, Volume 29, Issue 21, 4 June 2026.
This review provides an overview of the various chemical methods employed in the synthesis of oligonucleotides bearing a phosphate group at their 3′ or 5′ end. Notably, it presents modified phosphoramidites and supports developed for this purpose. Oligonucleotides (ON) with a phosphate monoester group at their 3′ or 5′ end have applications in many ...
Rémy Lartia
wiley   +1 more source

Quadratic optical nonlinearities of N-methyl and N-aryl pyridinium salts

, 2003
Four series of dyes with dimethylamino electron donor groups and N-R-pyridinium (R = methyl Me, phenyl Ph, 2,4-dinitrophenyl 2,4-DNPh, or 2-pyrimidyl 2-Pym) electron acceptors are studied as their hexafluorophosphate salts.
Gelbrich, T., Brunschwig, Bruce S., Light, M.E., Persoons, André, Harris, James A., Harris, J.A., Clays, Koen, Coe, B.J., Coles, Simon J., Clays, K., Wostyn, Kurt, Asselberghs, I., Coles, S.J., Coe, Benjamin J., Hursthouse, Michael B., Brunschwig, B.S., Gelbrich, Thomas, Nakatani, K., Hursthouse, M.B., Light, Mark E., Persoons, A., Asselberghs, Inge, Wostyn, K., Nakatani, Keitaro   +23 more
core   +1 more source

A universal O-glycosylation platform enabled by pyridinium catalysis using gas-releasing oxazolidinone-based carbamates donors

Nature Communications
Chemical glycosylation facilitates the scalable synthesis of structurally well-defined carbohydrates for functional studies and therapeutic development, with progress being driven by donors and strategies.
Xiaoting Qin, Lin Ke, Qinbo Jiao, Wenxu Zhen, Wentao Lin, Jiaxin Luo, Wenyang Chen, Tingbo Liu, Shiping Wang, Chunfa Xu   +9 more
doaj   +1 more source

Regioselective Nucleophilic Addition to Pyridinium Salts: A New Route to Substituted Dihydropyridones

, 2016
The regioselective addition of nucleophiles to pyridinium salts generates an intermediate enol-ether, which can be hydrolyzed in situ to provide a range of dihydropyridones.
Matthew J. Connolly (2209222), Timothy J. Donohoe (1301979), Lesley Walton (2126167)   +2 more
core   +1 more source