Results 51 to 60 of about 41,386 (303)

Photocatalytic Cycloaddition Reaction of Triarylphosphines with Alkynes Forming Cyclic Phosphonium Salts

, 2021
Herein reported is a photocatalytic cycloaddition reaction of triarylphosphines with alkynes. Phosphonium salts of unique bicyclic structures are synthesized through a radical pathway under mild reaction conditions. The phosphonium salts are subjected to
Yusuke, Masuda, Daichi, Ikeshita, Masahiro, Murakami   +2 more
core   +1 more source

Decarboxylative Hydroalkylation of Alkynes [PDF]

Journal of the American Chemical Society, 2018
The merger of open- and closed-shell elementary organometallic steps has enabled the selective intermolecular addition of nucleophilic radicals to unactivated alkynes. A range of carboxylic acids can be subjected to a CO2 extrusion, nickel capture, migratory insertion sequence with terminal and internal alkynes to generate stereodefined functionalized ...
Nicholas A. Till, Russell T. Smith, David W. C. MacMillan   +2 more
openaire   +2 more sources

Aptamer‐Based Delivery Systems for VEGF and NGF Modulation in Ocular Therapies

Advanced Healthcare Materials, EarlyView.
Aptamer‐based delivery systems targeting NGF and VEGF hold significant potential for precise and sustained treatment of complex diseases affecting both the anterior and posterior segments of the eye. This review critically summarizes current strategies for NGF and VEGF delivery as well as VEGF sequestration, providing a clinical perspective on how ...
Nadine Best, Gizem Karabiyik, Gerd Geerling, Sarah Barbara Zwingelberg, Gregor Lang, Martin Humenik   +5 more
wiley   +1 more source

Gold- and Iodine-Mediated Internal Oxygen Transfer of Nitrone- and Sulfoxide-Functionalized Alkynes

, 2011
Gold- and Iodine-Mediated Internal Oxygen Transfer of Nitrone- and Sulfoxide-Functionalized AlkynesIntramolecular oxygen transfer of nitrone- and sulfoxide-alkynes was achieved using a catalytic amount of Au(I) and a stoichiometric amount of iodine.
AiqunJia, 李兴伟, Song, Guoyong, Chen, Dan, Jia, Aiqun, Li, Xingwei   +5 more
core   +1 more source

Tracking Spatiotemporal Extracellular Matrix Evolution and Tissue Fusion in 3D Microtissues via Click Chemistry‐Based Metabolic Labelling

Advanced Healthcare Materials, EarlyView.
Metabolic labeling of nascent proteins in 3D microtissue spheroids provides a powerful analytical approach for large‐scale tissue engineering. Incorporation of non‐canonical amino acids with fluorescent tagging enables spatiotemporal investigation of extracellular matrix deposition and its evolution during multicellular tissue development and fusion ...
Theresa Koenig, F. Max Yavitt, Laura Veenendaal, Tim B. F. Woodfield   +3 more
wiley   +1 more source

Recent advances in transition-metal-catalyzed intermolecular carbomagnesiation and carbozincation

Beilstein Journal of Organic Chemistry, 2013
Carbomagnesiation and carbozincation reactions are efficient and direct routes to prepare complex and stereodefined organomagnesium and organozinc reagents.
Kei Murakami, Hideki Yorimitsu
doaj   +1 more source

Transformation of Dialkyl-Substituted Alkynes under the Action of the TaCl₅-Mg and NbCl₅-Mg Reagent System

Chemistry Proceedings, 2021
A regioselective method for the preparation of p-tolyl-substituted alkanes is presented based on the reaction of dialkyl-substituted alkynes with four equivalents of TaCl5 or NbCl5 in the presence of stoichiometric amounts of metallic magnesium in ...
Azat M. Gabdullin, Oleg S. Mozgovoj, Rita N. Kadikova, Ilfir R. Ramazanov, Usein M. Dzhemilev   +4 more
doaj   +1 more source

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

Single-Atom Alloy Pd₁Ag₁₀/CeO₂–ZrO₂ as a Promising Catalyst for Selective Alkyne Hydrogenation

Inorganics, 2023
The effect of support on the performance of Pd1Ag10/Al2O3 and Pd1Ag10/CeO2–ZrO2 catalysts in the selective hydrogenation of diphenylacetylene (DPA) was studied.
Pavel V. Markov, Galina O. Bragina, Nadezhda S. Smirnova, Galina N. Baeva, Igor S. Mashkovsky, Evgeny Y. Gerasimov, Andrey V. Bukhtiyarov, Yan. V. Zubavichus, Alexander Y. Stakheev   +8 more
doaj   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source