Results 111 to 120 of about 13,617,516 (263)

Photosensitizing Au(I) Catalysis With Coumarins

Chemistry – A European Journal, EarlyView.
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, Jacob J. van der Wal, Johannes E. M. N. Klein   +2 more
wiley   +1 more source

Chiral Pyrazolinylidene Complexes for Asymmetric Catalysis

Chemistry – A European Journal, EarlyView.
The synthesis and application of pyrazolin‐5‐ylidene NHC chiral‐at‐ruthenium catalysts is reported. The strong donating pyrazolin‐5‐ylidene ligands led to highly electron rich ruthenium complexes, which showed excellent catalytic activity and enantioselectivity in the intramolecular aziridination of an alkene.
Felix Möller, Nemrud Demirel, Thomas Krüger, Linus Plohnke, Jennifer Schröder, Sergei I. Ivlev, Eric Meggers   +6 more
wiley   +1 more source

Covalent Capture of Nitrous Oxide by N-Heterocyclic Carbenes [PDF]

A good catch: N-heterocyclic carbenes (NHCs) form stable adducts with nitrous oxide (N2O) under mild reaction conditions. The adducts display unique reactivity as evidenced by an alkylation reaction which leads to a rupture of the NN bond ...
Tskhovrebov, Alexander G., Solari, Euro, Wodrich, Matthew D., Scopelliti, Rosario, Severin, Kay   +4 more
core   +1 more source

Well‐Defined Nickel Precatalysts: Form, Function, and Application

Chemistry – A European Journal, EarlyView.
This review provides guidance on which nickel precatalysts to choose for a given application or which properties to prioritize in reaction development. A summary of the ease of synthesis, stability, diversity, accessibility, modularity, and general applicability is provided along with a related infographic.
Morgan E. John, George A. Koutsantonis, Reto Dorta, Scott G. Stewart   +3 more
wiley   +1 more source

Isolable ArInH2: Double Hydroindation Agent

Chemistry – A European Journal, EarlyView.
Stable crystalline monomeric indium dihydride ArInH2 was isolated and completely characterized using effective support of the P,C,P‐pincer ligand (Ar = 2,6‐(tBu2PO)2C6H3). It serves as unparalleled hydroindation agent, thereby extending the family of known hydrometallation process relying on heavy p‐block metals.
Adam Hochmal, Zdeňka Růžičková, Aleš Růžička, Roman Jambor, Milan Erben, Libor Dostál   +5 more
wiley   +1 more source

Non‐Covalent Fluorine–Silica Anchoring of a Molecular Platinum(II) bis(NHC) Catalyst: Structure, Interface Control, and Hydrosilylation Activity

Chemistry – A European Journal, EarlyView.
A Pt(II) bis(NHC) complex is immobilized on mesoporous silica through directional F–Si interactions encoded in the ligand framework. Quantitative 19F{29Si} REDOR experiments and molecular dynamics simulations establish Å‐scale catalyst–support contacts and define the interfacial organization.
Alexander Bergen, Cindy‐Ly Tavera‐Méndez, Valentina Eichhorn, Philip Maier, Elias Harrer, Andreas Scheurer, Frank W. Heinemann, Dirk Zahn, Martin Hartmann, Dorothea Wisser, Karsten Meyer   +10 more
wiley   +1 more source

2-(2,6-Diisopropylphenyl)-1-methylimidazo[1,5-a]quinolin-2-ium Tetrafluoroborate

Molbank
A new heterocyclic compound, 2-(2,6-diisopropylphenyl)-1-methylimidazo[1,5-a]quinolin-2-ium tetrafluoroborate 1 was obtained from its precursor, N-(2,6-diisopropylphenyl)-N-(quinolin-2-ylmethyl)acetamide 2, by POCl3-mediated cyclization.
Lyuben Borislavov, Iskra Z. Koleva, Vesela Lozanova, Maria Ivanova, Rumen Lyapchev   +4 more
doaj   +1 more source

N‐Heterocyclic Carbenes and N‐Heterocycles as Synthetic Reagents and Building Blocks

Chemistry – A European Journal
AbstractN‐Heterocyclic carbenes (NHCs) have become important tools in modern synthetic chemistry due to their versatility as organocatalysts and ligands in organometallic complexes. Since their first isolation and characterization, NHCs have demonstrated significant utility in various catalytic processes, offering advantages such as strong σ‐electron ...
Emily Jacobs, Thanh Vinh Nguyen
openaire   +2 more sources

N‐Boron‐Functionalized Anionic N‐Heterocyclic Carbenes (NBA‐NHCs)—A Case Study

Chemistry – A European Journal, EarlyView.
The synthesis and characterization of a new family of N‐boron‐functionalized anionic N‐heterocyclic carbenes (NBA‐NHCs), IiPrB(CN)3−, IiPr(C2F5)BF2−, IMesB(CN)3−, and IMes(C2F5)BF2−, is reported. ABSTRACT The synthesis and characterization of a new family of N‐boron‐functionalized anionic NHCs (NBA‐NHCs), IiPrB(CN)3− (5), IiPr(C2F5)BF2− (6), IMesB(CN)3−
Sophie Mann, Günther Horrer, Maik Finze, Udo Radius   +3 more
wiley   +1 more source

Exploring the Boundaries of Aromaticity in Complex Structures and Excited States Through Computational Analysis

Chemistry – A European Journal, EarlyView.
Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola, Miquel Solà, Albert Poater   +2 more
wiley   +1 more source