Results 91 to 100 of about 9,595 (203)
Catalytic photochemical enantioselective α-alkylation with pyridinium salts. [PDF]
Chem Sci, 2023 Yetra SR, Schmitt N, Tambar UK.
europepmc +1 more source
Photochemistry and Photobiology, EarlyView.Visible light photolysis of a N‐(N,N‐diarylaminopyridinium) salt allows for covalent modification of a peptide. Mass spectrometry demonstrates that this procedure selectively labels tryptophan residues. Laser flash photolysis experiments show that bond formation occurs via a diarylnitrenium ion intermediate.
Edward S. Chinn +3 more
wiley +1 more source
Poly(vinylbenzyl Pyridinium Salts) as Novel Sorbents for Hazardous Metals Ions Removal. [PDF]
Molecules, 2022 Wieszczycka K +4 more
europepmc +1 more source
Structural and Spectroscopic Evidence of Hydrogen Bonded Anionic Wires in Protic Ionic Liquids
ChemPhysChem, Volume 27, Issue 19, 14 October 2026.Anionic wires of deprotonated carboxylic acids challenge the general wisdom that like charges repel. The hydrogen bond motif observed in the X‐ray structure is even preserved in the liquid state of the material as shown by δ1H NMR spectroscopy. The experimental and theoretical findings provide deep insight into the nature of hydrogen bonding.
Maham Azhar +5 more
wiley +1 more source
Photosensitizing Au(I) Catalysis With Coumarins
Chemistry – A European Journal, Volume 32, Issue 38, 13 October 2026.A Au(I) complex with a tethered coumarin fragment was synthesized and characterized by UV‐vis and emission spectroscopy. Its ability to facilitate photo‐driven cross‐coupling reactions through single‐electron and energy transfer events was evaluated. ABSTRACT Gold catalysis shows versatility in a wide range of challenging transformations, wherein light‐
Liliana Capulín Flores +2 more
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The Expanding Role of Diazirines in Synthetic Methodology
European Journal of Organic Chemistry, Volume 29, Issue 38, 13 October 2026.Beyond their established role in photoaffinity labeling, diazirines have emerged as versatile reagents in synthetic chemistry. This review highlights their dual reactivity as carbene and nitrogen‐transfer precursors, showcasing mechanistic insights and diverse applications in cyclopropanations, cycloadditions, skeletal editing, amination, heterocycle ...
Viktor Savic +3 more
wiley +1 more source
Synthesis of 3-substituted pyridinium salts
ARKIVOC, 2000 Juliusz Pernak, Jaroslaw Rogoza
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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 +11 more
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Advanced Engineering Materials, Volume 28, Issue 19, 7 October 2026.Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees +6 more
wiley +1 more source
Angewandte Chemie, Volume 138, Issue 40, 28 September 2026.A helical polymer whose chain ends are connected through pillar[5]arene‐based host–guest interactions translates molecular helicity into supramolecular morphology. Solvent‐triggered helicity inversion accompanied by changes in chain rigidity switches the supramolecular architecture between cyclic and rigid‐rod nanostructures.
Tatsuya Nishimura +4 more
wiley +2 more sources