Results 111 to 120 of about 23,632 (231)

Enhanced CO2 Electroreduction Through Electrostatic Functionalization of Iron Porphyrin

ChemCatChem, Volume 18, Issue 3, 12 February 2026.
This study introduces an iron porphyrin catalyst for CO2 reduction, featuring an ortho‐positioned imidazolium group designed to probe electrostatic effects. The catalyst exhibits a 100‐fold increase in activity over its unsubstituted counterpart at similar potentials.
Adrien Smith, Zakaria Halime, Christian Herrero, Ally Aukauloo   +3 more
wiley   +1 more source

Synthesis and characterization data of monocationic and dicationic ionic liquids or molten salts

Data in Brief, 2018
Data presented in this article are related with the research paper entitled “Ecotoxicity assessment of dicationic versus monocationic ionic liquids as a more environmentally friendly alternative” [1]. The present article describes the synthesis steps and
M.G. Montalbán, G. Víllora, P. Licence
doaj   +1 more source

Suzuki reaction on pyridinium N-haloheteroarylaminides: regioselective synthesis of 3,5-disubstituted 2-aminopyrazines [PDF]

, 2008
An extensive study of Suzuki–Miyaura cross-coupling processes on N-pyridinium bromoazinyl aminides has been performed. Mono- and disubstitution on 5- and 3,5-bromo derivatives produced the corresponding aryl derivatives.
Castillo Romero, Rafael, Izquierdo Ceinos, Ma Luisa, Reyes Prados, María Jose, Álvarez-Builla Gómez, Julio   +3 more
core   +2 more sources

High Potential Isoindoline‐Based Nitroxides Posolytes for Aqueous Organic Redox Flow Batteries

ChemSusChem, Volume 19, Issue 3, February 2026.
A convenient metal‐catalyzed [2 + 2 + 2] cycloaddition enables the synthesis of isoindoline‐based nitroxides as new posolytes for aqueous organic redox flow batteries. The cationic PPO exhibits a 220 mV higher oxidation potential than 4‐TMA‐TEMPO, 3 M solubility in 1 M NaCl, and a cell voltage of 1.56 V.
Karim Boutamine, Gilles Casano, Patricia Bassil, Sébastien Gauden, Cecilia Poderi, Emilie Pepe, Frédéric Favier, Steven Le Vot, Olivier Ouari   +8 more
wiley   +1 more source

Hexaaquazinc(II) dinitrate bis[5-(pyridinium-3-yl)tetrazol-1-ide] [PDF]

, 2018
Indexación: Scopus.Funding for this research was provided by: Fondecyt Regular (award No. 1151527); Proyecto REDES ETAPA INICIAL, Convocatoria 2017 (award No. REDI170423); Millennium Institute for Research in Optics (MIRO); Basal USA (award No.
Chi-Duran, I., Enriquez, J., Herrera, F., Singh, D.P., Vega, A.   +4 more
core   +1 more source

Investigating operational stability and causes of cofactor release in fold type I amine transaminase

Protein Science, Volume 35, Issue 2, February 2026.
Abstract Amine transaminases (ATAs) are pyridoxal phosphate (PLP) dependent biocatalysts frequently employed in chiral amine synthesis. Yields of ATA‐catalyzed reactions often suffer from low enzyme operational stability due to weak interactions between the ATA and the aminated cofactor pyridoxamine phosphate (PMP), which can leak from the active site ...
Xuebin Feng, William Chau, Emma R. Master   +2 more
wiley   +1 more source

Alkaloid inspired spirocyclic oxindoles from 1,3-dipolar cycloaddition of pyridinium ylides [PDF]

, 2013
Cycloaddition reactions between pyridinium ylides and 3-alkenyl oxindoles that proceed in high yield and with very good regio- and diastereoselectivity are reported. The resulting cycloadducts have the same stereochemistry of biologically active oxindole
Castledine, Richard A., Day, Jonathan, Dowden, James, Lewis, William, McKeever-Abbas, Ben, Uroos, Maliha   +5 more
core   +3 more sources

On‐Resin Pictet–Spengler Cyclization for 1,2,3,4‐Tetrahydro‐β‐carboline‐3‐carboxylate (Tcc) Peptide Synthesis With Acid‐Labile Functional Tolerance

Journal of Peptide Science, Volume 32, Issue 2, February 2026.
The constrained tryptophan (Trp) analog 1,2,3,4‐tetrahydro‐β‐carboline‐3‐carboxylic acid (Tcc) is used to restrict peptide conformation in structure–activity relationship studies. Although Pictet–Spengler cyclization of Trp and aldehydes with mineral acid gives Tcc analogs, such harsh conditions do not tolerate acid‐labile functionality.
Omer S. L. N'dri, Charity D. Yongo‐Luwawa, Xiaozheng Wei, Kajumee Bora Bhowal, Chitra P. Sadanandhan, Darince Truong, Ida Boccino, Will Maclean, Lylia Dif‐Yaiche, Zoé Villeneuve, William D. Lubell   +10 more
wiley   +1 more source

A Synthetic Route to Quaternary Pyridinium Salt-Functionalized Silsesquioxanes

International Journal of Polymer Science, 2012
A synthetic route to potentially biocidal silsesquioxanes functionalized by quaternary pyridinium functionalities has been developed. N-Alkylation reactions of the precursor compounds 4-(2-(trimethoxysilyl)ethyl)-pyridine (5) and 4-(2-trichloro ...
Nataliya Kostenko, Jochen Gottfriedsen, Liane Hilfert, Frank T. Edelmann   +3 more
doaj   +1 more source

Ab Initio Molecular Dynamics Study of Quadrupolar Spin Relaxation in an Ionic Liquid

Journal of Computational Chemistry, Volume 47, Issue 3, 30 January 2026.
This study presents a methodology for describing the relaxation of nuclear spins (with I > 1/2), applicable to ionic liquids of a general nature. Based on ab initio molecular dynamics, we demonstrate the importance of explicit solvation in calculating the relaxation times of the quadrupolar mechanism.
Luciano N. Vidal, Lucas C. Ducati, Jochen Autschbach   +2 more
wiley   +1 more source