Results 101 to 110 of about 5,850 (197)

Deep Eutectic Solvent‐Type Mixture as a Green Catalyst in the Solvent‐Free Cycloaddition of CO2 and Epoxides

open access: yesChemSusChem, Volume 19, Issue 14, 29 July 2026.
A green, metal‐free catalytic system based on a deep eutectic solvent‐type mixture of tetrabutylammonium iodide and levulinic acid enables the solvent‐free cycloaddition of carbon dioxide (CO2) to epoxides. Cooperative acid–nucleophile activation affords cyclic carbonates in up to 95% yield at atmospheric pressure using only 1.4 mol% of catalyst.
Tatiana Martí   +5 more
wiley   +1 more source

A Borane Sandwich Analogue of Ferrocene

open access: yesAngewandte Chemie, Volume 138, Issue 29, 13 July 2026.
The first ferrocene analogue with two boron‐based ligands is identified through a global exploration of the FeB10H20 potential energy surface. The η5,η5‐Fe(B5H10)2 complex emerges as the global minimum, showing that metal coordination inverts borane stability and enables aromatic boron rings inaccessible in isolation.
Viviana Roman‐Ventura   +8 more
wiley   +2 more sources

Mitochondria‐Targeting Moieties Based on N‐Tethered Pyridinium Cations

open access: yesAngewandte Chemie, Volume 138, Issue 29, 13 July 2026.
Pyridinium cations were benchmarked as mitochondria‐targeting moieties in a panel of N‐tethered fluorescent‐, bioactive‐, and inert‐cargo conjugates. 3,5‐Diphenylpyridinium (DPPy+) is a competent triphenylphosphonium (TPP+) surrogate, combining high mitochondria‐targeting efficiency with lower intrinsic effects on mitochondrial function.
Ivan Džajić   +27 more
wiley   +2 more sources

On Oxalyl Halide Isothiocyanates Part II: Decarbonylation and Reactivity Studies

open access: yesEuropean Journal of Inorganic Chemistry, Volume 29, Issue 21, 25 July 2026.
Thermal decarbonylation of oxalyl halide isothiocyanates affords the respective carbonyl halide isothiocyanates as liquids. Crystals grown from melt allowed the elucidation of their crystal structures. Spectroscopic signatures (IR, Raman, NMR) are presented alongside reactivity studies. The reaction of oxalyl halide isothiocyanate, X(CO)2NCS (X = Cl (1)
Sven Ringelband, Frank Tambornino
wiley   +1 more source

Crystal structure and Hirshfeld-surface analysis of an etoxazole metabolite designated R13

open access: yesActa Crystallographica Section E Crystallographic Communications
The etoxazole metabolite R13, systematic name 4-(4-tert-butyl-2-ethoxyphenyl)-2-(2,6-difluorophenyl)oxazole (C21H21F2NO2), results from the oxidation of etoxazole, a chitin synthesis inhibitor belonging to the oxazoline class, widely used as an insecticide/acaricide since 1998.
Thaluru M. Mohan Kumar   +5 more
openaire   +3 more sources

On Oxalyl Halide Isothiocyanates Part I: Syntheses and Isomerism

open access: yesEuropean Journal of Inorganic Chemistry, Volume 29, Issue 21, 25 July 2026.
Oxalyl halide isothiocyanates can be prepared from oxalyl halide with one equivalent of NH4SCN in liquid SO2. While oxalyl bromide isothiocyanate can be isolated as a liquid, the respective chloride compound readily undergoes isomerization under formation of a thiazole ring, which is obtained as a solid.
Sven Ringelband   +2 more
wiley   +1 more source

Actinide 4,4′‐Bipyridine‐N,N′‐Dioxide Coordination Polymers: Cationic Framework Structures Templated by Dicyanoaurate and Tetracyanoaurate Counterions

open access: yesEuropean Journal of Inorganic Chemistry, Volume 29, Issue 21, 25 July 2026.
Th4+ or UO22+ actinides, neutral bipyridine‐N,N’‐dioxide ligands, and anionic cyanoaurate linkers are combined to generate a family of four coordination polymers. ‘Truss bridge’ and square grid cationic frameworks are yielded when using [Au(CN)2]− or [Au(CN)4]−, respectively, indicating a templating effect guided by either aurophilic interactions ...
Sylvain St. Louis   +2 more
wiley   +1 more source

Impact of Electronic Substitution and Planarization on the Photophysical Properties of 2‐(2′‐Hydroxyphenyl)benzoxazole or 2‐(2′‐Hydroxyphenyl)‐Dimethylindole

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 28, 25 July 2026.
We report the synthesis, structural characterization, and photophysical investigation of a series of Excited‐State Intramolecular Proton Transfer‐active HBO and HDMI derivatives. By varying heterocyclic cores, substituents, and ethynyl planarization, we establish structure–property relationships governing fluorescence behavior.
Mathieu Gervais   +7 more
wiley   +1 more source

Stabilizing the Hexacyanotrimethylenecyclopropane Electron Acceptor—Structural and Photophysical Characterization

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 30, 20 July 2026.
An improved low‐temperature synthesis enables the first comprehensive structural and spectroscopic characterisation of neutral hexacyanotrimethylenecyclopropane (CN6CP). Combined IR/Raman, UV–Vis and ssNMR analyses reveal a deeper understanding of its oxidation‐state‐dependent charge redistribution, σ‐aromaticity of the cyclopropane core, and redox ...
Jan P. Soyka   +8 more
wiley   +1 more source

“Innocent” Electrolytes Can Influence Organic Electrosynthetic Selectivity

open access: yesChemElectroChem, Volume 13, Issue 14, 17 July 2026.
Organic electrosynthesis has emerged as a powerful strategy for leveraging inexpensive and abundant electricity in organic synthesis, but understanding the role of inert supporting electrolyte is largely unexplored. This article investigates cobalt‐based metal–carbon bond homolysis and elucidates how supporting electrolytes influence reaction rates ...
Zachary A. Nguyen   +7 more
wiley   +1 more source

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