Results 41 to 50 of about 2,396 (173)

Synthesis, Electronic, and Antibacterial Properties of 3,7-Di(hetero)aryl-substituted Phenothiazinyl N-Propyl Trimethylammonium Salts

Molecules
In this study, a library of 3,7-di(hetero)aryl-substituted 10-(3-trimethylammoniumpropyl)10H-phenothiazine salts is prepared. These title compounds and their precursors are reversible redox systems with tunable potentials. The Hammett correlation gives a
Hilla Khelwati, Lasse van Geelen, Rainer Kalscheuer, Thomas J. J. Müller   +3 more
doaj   +1 more source

Transannular Interaction in N-Aryl-5-Azocanones, A Semiempirical Quantum Mechanics and UV Spectroscopy Studies [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2001
The ability of the present semiempirical quantum mechanics methods are surveyed for reproducing the transannular interaction in the bifunctional N-phenyl-5-azocanones.
Parviz Rashidi Ranjbar, Ali Mohajeri, Mehran Ghiaci   +2 more
doaj  

Photolytic Hydrophosphination: Insights Into Catalyzed and Uncatalyzed Processes

Chemistry – A European Journal, EarlyView.
Catalyst‐free photolytic hydrophosphination is demonstrated for vinyl arenes and activated alkenes in polar protic (alcohol) solvents. These reactions appear to be closed‐shell, affirming that even ambient light can impact a reaction—a potentially broad influence on even mundane reactions.
Emma J. Finfer, Evelyn M. Kempf, Rory Waterman   +2 more
wiley   +1 more source

Sonochemical Synthesis of Cobalt‐Oxo‐Cubanes as Redox‐Active Platform for Proton‐Coupled Electron Transfer

Chemistry – A European Journal, EarlyView.
A facile sonochemical method for rapid and gram‐scale synthesis of ligand‐tunable cobalt‐oxo‐cubanes is reported. Electrochemical studies reveal a Co4O4‐centered one‐electron oxidation and PCET pathway, while identifying Co2+ impurities as key disruptors of true cubane redox chemistry.
Satyapriya Nath, Amjath Nihal Thiruthimmal, Tapan Ping, Sankalpa N. Panda, Loknath Patro, Jeebanjyoti Mohapatra, B. L. Bhargava, Bikash Kumar Jena, Bishnu P. Biswal   +8 more
wiley   +1 more source

Titanium‐Catalyzed Diastereoselective Keto‐ and Iminonitrile Cyclizations

Chemistry – A European Journal, EarlyView.
The titanium(III)‐catalyzed diastereoselective cyclization of readily‐available substituted ketonitriles gives cyclopentanones in good yield and stereoselectivity. Subsequent 1,2‐addition allows the preparation of cyclopentyls with three consecutive stereocenters.
Christoph Kern, Ritu Singh, Michael A. Unkrig‐Bau, Lukas Jakob, Jan Streuff   +4 more
wiley   +1 more source

Cross‐Dehydrogenative Coupling Reactions With Redox‐Active Guanidine Reagents

Chemistry – A European Journal, EarlyView.
ABSTRACT Cross‐dehydrogenative coupling (CDC) reactions are attractive and environmentally friendly ways to form new C‐C and other element‐element bonds. Here, we report the first CDC reactions triggered by a redox‐active guanidine reagent. N‐phenyltetrahydroisoquinoline and derivatives with electron‐donating and withdrawing substituents at the N ...
Petra Walter, Olaf Hübner, Hans‐Jörg Himmel   +2 more
wiley   +1 more source

Modular One‐Pot Access to π‐Expanded Tetrakis(Phenothiazinyl)‐Silanes With Broadly Tunable Redox and Emission Properties

Chemistry – A European Journal, EarlyView.
A library of 21 tetrakis(phenothiazinyl)‐substituted silanes with broadly variable substituent decoration, which are fully reversible multistage redox systems with intense tunable emission from deep blue to yellow–green (441–533 nm), was rapidly synthesized by bromine–lithium exchange/borylation–Suzuki coupling of tetrakis(4‐bromophenyl)silane or by ...
Thomas P. M. Merke, Lysander Presser, Leonard Karl, Christian Ganter, Thomas J. J. Müller   +4 more
wiley   +1 more source

A New Metal‐Ester Bonding Motif for the Synthesis of Hybrid Molecular Catalysts on Metal Oxide Supports Leads to Tunable Reactivity

Angewandte Chemie, Volume 138, Issue 29, 13 July 2026.
This work reports a new metal–ester bonding strategy for anchoring molecular catalysts to metal oxide supports, achieving exceptionally high surface loadings. Catalyst reactivity is predictably tuned by the support's properties, enabling control over electronic behavior and reaction pathways, thus opening new possibilities for designing highly ...
Joseph J. Kuchta III, Sarah M. Moody, Alexia M. Bradbury, D. M. S. C. Dissanayake, Laura C. Maybach, Santosh K. Balijepalli, John R. Regalbuto, Aaron K. Vannucci   +7 more
wiley   +2 more sources

Micro‐Environment Programmable Quinoline COFs for High‐Performance Photocatalytic H2O2 Generation and Benzylamine Coupling

Advanced Science
Photocatalytic H2O2 synthesis from water and oxygen by covalent organic frameworks (COFs) has attracted much attention currently. However, conventional COFs often suffer from insufficient stability and activity due to the unclear structure‐activity ...
Mengchao Guo, Chao He, Zihe Wu, Yu Tian, Jiani Yang, Yujie Wang, Hao Wu, Jin Yang, Min Xu, Weichao Xue, Chong Cheng, Shuang Li, Changsheng Zhao   +12 more
doaj   +1 more source

Linear and Two‐Dimensional Infrared Spectroscopy of the Multifunctional Vibrational Probe, 3‐(4‐Azidophenyl) Propiolonitrile. Deperturbing a Fermi Triad by Isotopic Substitution

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Linear infrared spectroscopy combined with isotope labeling and density functional theory unravels the origin of a Fermi triad in a multifunctional vibrational chromophore. Ultrafast 2DIR‐spectroscopy reports directly on the dynamics and the intramolecular vibrational energy flow pathways in the isotopically deperturbed system. Abstract Infrared probes
Claudia Gräve, Jörg Lindner, Stefan Flesch, Luis I. Domenianni, Peter Vöhringer   +4 more
wiley   +1 more source