Results 111 to 120 of about 85,149 (295)

Dual Ligand‐Enabled Nondirected C─H Olefination of (Hetero)Arenes for the Synthesis of Clickable Derivatives

Chemistry – A European Journal, EarlyView.
We report an efficient method for late‐stage installation of “clickable” alkyne groups into diverse (hetero)arenes. Using a dual‐ligand palladium catalyst that combines an NASA ligand with an N‐heterocycle, an acrylate unit bearing a terminal alkyne can be introduced via nondirected C─H activation.
Tommaso Braga, Maria Hergert, Manuel van Gemmeren   +2 more
wiley   +1 more source

Alpine ungulates adjust diel activity to the natural return of wolves amid anthropogenic pressures

Ecography, EarlyView.
As wolves recolonise their historical range across Europe, ungulates face predation once more – but in landscapes profoundly altered by human activity. This shift raises crucial questions about their capacity to express adaptive antipredator behaviours.
Charlotte Vanderlocht, Valerio Donini, Andrea Corradini, Simone Dal Farra, Benjamin Robira, Andrea Gazzola, Giorgia Galeotti, Laura Limonciello, Noemi Squillaci, Maël Van Dam, Giada Zeni, Marta Gandolfi, Elisa Iacona, Lucrezia Lorenzetti, Matteo Nava, Federico Ossi, Heidi C. Hauffe, Francesco Ferretti, Luca Corlatti, Luca Pedrotti, Francesca Cagnacci   +20 more
wiley   +1 more source

Seasonal variability in ichthyoplankton abundance and assemblage composition in the northern Gulf of Mexico off Alabama [PDF]

, 2010
Multiyear ichthyoplankton surveys used to monitor larval fish seasonality, abundance, and assemblage structure can provide early indicators of regional ecosystem changes.
Graham, William M., Hernandez Jr., Frank J., Powers, Sean P.   +2 more
core   +1 more source

Dynamic Covalent Chemistry Enables Self‐Healing and Compatibilization in Polypropylene Composites

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A high‐performance polypropylene insulation material is created through dynamic covalent crosslinking. It achieves exceptional dielectric properties, autonomous self‐healing, and easy recycling, offering a sustainable solution for future HVDC transmission systems.
Hongzhe Zhang, Wenye Zhang, Wenjie Huang, Jun‐Wei Zha   +3 more
wiley   +1 more source

Light‐Induced Reactions of Small‐Membered Cyclic Carbonyl Compounds

European Journal of Organic Chemistry, EarlyView.
This review highlights recent advances in the synthesis and photochemical reactivity of cyclopropenone and cyclobutenedione. These compounds undergo photolysis upon direct excitation, and in some cases, through indirect excitation by photocatalysts. The resulting photogenerated species exhibit unique reactivity profiles that are strongly influenced by ...
Kenji Mishiro
wiley   +1 more source

Stream CO2 emissions are overestimated without consideration of diel water and atmospheric CO2 variability

Limnology and Oceanography Letters
Streams are significant emitters of carbon dioxide (CO2) to the atmosphere that are influenced by diel CO2 dynamics. However, we know little about diel CO2 variability within streams, the diel dynamics of CO2 in the air above streams, and the ...
Theresa Reichenpfader, Katrin Attermeyer
doaj   +1 more source

Machine learning classification and driver analysis of diel variability in dissolved oxygen in Taihu Lake

Ecological Indicators
Dissolved oxygen (DO) plays a crucial role in aquatic ecosystems, yet its diel variations are influenced by complex environmental interactions. This study analyzed high-frequency DO data from Sanshandao Island in Taihu Lake (2020–2022) to classify diel ...
Tingting Luo, Yehui Zhang
doaj   +1 more source

Synthesis of Sulfur Enriched Cyclohexenes via the Tungsten‐Promoted Dearomatization of a Phenyl Sulfone

European Journal of Organic Chemistry, EarlyView.
A method for synthesizing sulfur‐substituted cyclohexenes is reportedthat leverages the η2‐coordination of a phenyl sulfone to [WTp(NO)(PMe3)] (Tp = trispyrazolylborate). Three sequential protonation and nucleophilic additions to the bound arene, followed by oxidative decomplexation, affords functionalized cyclohexenes bearing sp3‐ and sulfur‐enriched ...
Daniel J. Siela, Matthew C. McGraw, Diane A. Dickie, W. Dean Harman   +3 more
wiley   +1 more source

Rhythms of lysis: Viral regulation of prokaryotic turnover across diel cycles

Limnology and Oceanography Letters
Diel rhythms structure microbial activity in the ocean, yet the role of viral lysis in driving short‐term community dynamics remains poorly understood. Here, we combined dilution experiments, high‐resolution microbiome sampling and extracellular ribosome
Lu Liu, Qiang Zheng
doaj   +1 more source

Streamlined Synthesis of Triamantane from Readily Available Starting Materials

Helvetica Chimica Acta, EarlyView.
A practical laboratory synthesis of triamantane based on the McKervey modification of the Schleyer stabilomeric synthesis is described. A high‐yielding rearrangement of Binor‐S and a significantly facilitated Diels–Alder step allowed an operationally simple sequence that reliably delivers triamantane on a tens‐of‐grams scale.
Xiao‐Yu Li, Christof Sparr
wiley   +1 more source