Results 131 to 140 of about 96,389 (286)

A Lipid‐Conjugation Strategy for Intracellular Reactive Oxygen Species Control in Hepatic Cells

Angewandte Chemie, EarlyView.
A lipid conjugation strategy anchors a manganese Salen complex within phospholipid membranes, yielding stable, catalytically active liposomes. These lipid–metal assemblies efficiently degrade reactive oxygen species (ROS) and enable intracellular redox control in steatotic HepaRG cells, offering a precise route to biomimetic antioxidant design ...
Olav Vestrheim, Huichao Zhao, Anders Bodholt Nielsen, Nino Wili, Niels Chr. Nielsen, Joseph A. Lyons, Rajeshwar Prosad Mookerjee, Brigitte Städler   +7 more
wiley   +2 more sources

Sustainable aviation fuel: Impact of alkene concentration on jet fuel thermal oxidative test (JFTOT)

Energy Science & Engineering
Of the processes that are approved to produce synthetic kerosene for use in jet fuel, about half produce olefinic kerosene that is hydrotreated. The alkene concentration in synthetic kerosene is indirectly regulated through the thermal oxidative ...
Laine B. Pereira, Cibele M. Halmenschlager, Arno de Klerk   +2 more
doaj   +1 more source

Enantioselective Synthesis of a New Class of Stable and Functionalized Cyclopentadienes via CuH‐Catalysis

Angewandte Chemie, EarlyView.
Cyclopentadienes (CpHs) are fundamental building blocks with widespread applications in chemistry. However, their inherent acidity and isomeric instability have long limited access to chiral variants in an asymmetric fashion. Here, we introduce a CuH‐catalyzed asymmetric transformation that provides an unprecedented entry into a new class of ...
Piero Soppelsa, Riccardo Bellin, Besma Boulila, Francesco Vaghi, Manuel Orlandi   +4 more
wiley   +2 more sources

Heavier Alkyne‐Ni0 Complexes, [R2E2·Ni] (E = Sn, Pb), Exhibiting σ‐Complex Character

Angewandte Chemie, EarlyView.
Using a reductive group elimination strategy, heavier alkyne (LEEL; E = Sn, Pb) complexes of Ni0 are accessed. In contrast to classical alkyne coordination, these systems are best described as σ‐complexes, driven by ligand‐induced constraints and the established poor π‐bonding in heavier alkyne analogues.
Leopold Junge, Emeric Schubert, Israel Fernández, Terrance J. Hadlington   +3 more
wiley   +2 more sources

Geminale Difunktionalisierung von Ketonen durch C–S Bindungs‐insertion photogenerierter Donor–Donor Diazoverbindungen

Angewandte Chemie, EarlyView.
Die geminale Difunktionalisierung leicht verfügbarer Bausteine ermöglicht einen schnellen Zugang zu molekularer Komplexität. Diese Arbeit stellt eine Strategie vor, um zwei unterschiedliche funktionelle Gruppen an einem Carbonylkohlenstoff zu installieren, indem dieser in eine Donor–Donor‐Diazo‐Verbindung überführt wird. Die Methode ist sowohl im Batch‐
Vincent George, Aryaman Pattanaik, Daniel Maddox, Lukas M. Sigmund, Giovanna Mejia, Sara Pahlén, Simon O. Angerer, Maria Schmoll, Lisa Marie Schneider, Nidhal Selmi, Mikhail Kabeshov, Giulia Bergonzini, Julia Rehbein, Burkhard König   +13 more
wiley   +1 more source

Single‐Atom Iron‐Catalyzed Oxidative Esterification: From Methylarenes to the Upcycling of Polystyrene and Lignin‐Derived Feedstocks

Angewandte Chemie, EarlyView.
Heterogeneous iron‐catalyzed environmentally benign and sustainable CH‐oxidative esterification methodology has been developed for the synthesis of esters. This challenging reaction has been achieved by the rational design of specific single atom iron‐based catalyst with Fe‐N4 active centers, which empowered the oxidative esterification of methyl and ...
Zhuang Ma, Binyu Zhang, Hui Yang, Yue Hu, Junzheng Yu, Yanbin Cui, Jun Zhao, Matthias Beller, Rajenahally V. Jagadeesh   +8 more
wiley   +2 more sources

Polarity‐Directed Synthesis of an Exfoliable 2D Polyoxometalate‐Based Metal‐Organic Framework for Noble Metal‐Free Alkyne Transfer Semi‐Hydrogenation

Angewandte Chemie, EarlyView.
Exfoliation of 2D nanosheets based on polyoxometalate metal‐organic frameworks (POMOFs) gives access to nanostructures with selective catalytic reactivity for the alkyne transfer semi‐hydrogenation which outperform the bulk references and rival some classical noble metal‐based catalysts.
Xusheng Dai, Yalei Zhang, Yue Zhao, Shujun Li, Nana Ma, Qingchun Xia, Yiwei Liu, Rongji Liu, Shuxia Liu, Xuenian Chen, Carsten Streb   +10 more
wiley   +2 more sources

Seitliche π‐Koordination einer C≡C‐Dreifachbindung an Technetium forciert durch den As,CC,As Alkin‐Pinzetten‐Liganden 1,2‐Bis(2‐(Diisopropylarsaneyl)‐4‐(Trifluormethyl)phenyl)Ethin

Angewandte Chemie, EarlyView.
Technetium‐Alkin‐Komplexe konnten jahrzehntelang nicht isoliert werden, obwohl es zahlreiche Berichte über benachbarte Elemente gab. Der einzige Hinweis auf ihre Existenz war die Isolierung von Vinylidencarbenen oder deren Folgeprodukten. Stabile, kristalline Tc(III)‐ und Tc(V)‐Alkin‐Komplexe (sowie deren Re‐Analoga) eines auf Tolan basierenden As,CC ...
Maximilian Roca Jungfer, Moritz Johannes Ernst, Lukas Eberle, Marius Kesselring, Guilhem Claude, Joachim Ballmann   +5 more
wiley   +1 more source

Potassium‐Ligand Cooperation Facilitated Chemical Bond Activation and Catalytic Hydrogenation

Angewandte Chemie, EarlyView.
A new strategy for alkali metal‐mediated catalysis based on metal–ligand cooperation (MLC) is presented. Potassium pincer complexes exhibit remarkable reactivity toward a range of molecules via an unprecedented potassium–ligand cooperative mechanism. This reactivity enables potassium‐catalyzed hydrogenation, providing efficient reduction of ketones and
Yaoyu Liang, Irena Efremenko, Thiyagarajan Subramanian, Amit Kumar, Liat Avram, Yael Diskin‐Posner, David Milstein   +6 more
wiley   +2 more sources

Decarboxylative alkylation of alkenes. [PDF]

Nature
Roy TK, Tamborini FM, Petzold R, Fu J, Tang Y, Ritter T.   +5 more
europepmc   +1 more source