Results 41 to 50 of about 1,395 (183)

Gold‐Catalyzed Cyclization of Indole‐Tethered Alkynes Enabling Synthesis of Exocyclic Alkenyl Tetrahydrocarbazoles

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
An efficient gold‐catalyzed intramolecular cyclization of indole‐tethered alkynes using AgNTf2 as an additive has been developed, which provides bioactive exocyclic alkenyl tetrahydrocarbazoles with up to 85% yield. Control experiments and DFT studies indicate that the reaction proceeds via a 6‐exo‐dig cyclization pathway, with gold acetylide complexes
Haibo Mei   +4 more
wiley   +1 more source

Bromonitroalkanes in Organic Synthesis

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
α,α‐Bromonitroalkanes (BNAs) exhibit chameleon‐like reactivity, serving as carbene, radical, carbanion, and carbocation synthons. This mini‐review summarizes the different reaction modes and highlights recent developments in thermal and photochemical processes. α,α‐Bromonitroalkanes (BNAs) exhibit chameleon‐like reactivity, serving as carbene, radical,
Magdalena Koch, Oliver Reiser
wiley   +1 more source

Design and Synthesis of Polyheterocyclic Compounds Containing Pyrazolopyridopyrimidine Nucleus with Antimicrobial Activities

open access: yesChemistryOpen
This study reports the design, synthesis, and antibacterial evaluation of a library of novel polyheterocyclic derivatives featuring a unique fused pyrimidopyridopyrazole moiety.
Farag A. El‐Essawy   +1 more
doaj   +1 more source

Carbon‐Supported Catalytic Systems Assembled by π–π Interactions

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
This review explores the noncovalent immobilization of organic and organometallic catalysts on carbonaceous supports through π–π interactions, highlighting its potential to enhance catalyst recovery, recyclability, and the sustainability of organic synthesis.
Chloé Jamalkhan   +8 more
wiley   +1 more source

Forage chemical composition drives early metabolic shifts in ponies fed different haylages

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background Rapid changes between feeds can cause dysbiosis and colic in horses. The metabolic consequences of transitioning between haylages (HY) are currently unknown. Objectives To characterise urinary and faecal metabonomics in ponies transitioned between HY varying in botanical composition and physiological age and to evaluate the speed of
M. J. S. Moore‐Colyer   +2 more
wiley   +1 more source

Uncovering the Mechanisms of Long-Range Magnetic Order in [Mn(mal)(H2O)]n: Insights from Microscopic and Macroscopic Magnetic Analysis

open access: yesMagnetochemistry
In this study, we investigate the magnetic properties of the molecular compound [Mn(mal)(H2O)]ₙ (mal = dianion of malonic acid) by integrating microscopic and macroscopic characterization, combining unpolarized neutron diffraction and magnetometry ...
Fernando S. Delgado   +4 more
doaj   +1 more source

Band Engineering of Benzothiadiazole‐Derived Metal‐Organic Frameworks for Photocatalytic Organic Transformations

open access: yesNational Materials, EarlyView.
BTID‐functionalized metal‐organic frameworks provide a modular platform for tailoring photocatalytic electronic structures through acceptor‐linker engineering. By correlating band alignment, charge‐transfer characteristics, and reactive oxygen species generation, this review highlights design principles that enable efficient visible‐light‐driven ...
Xin Li   +3 more
wiley   +1 more source

Main‐chain polyfullerenes: Taking fullerene to the next dimension

open access: yesPolymer International, EarlyView.
This short review appraises main‐chain polyfullerenes. Their slow development over 30 years has suddenly boomed with a rapid growth due to exciting developments in solar energy. Abstract This mini‐review gives an overview of the development, chemistry, properties and applications of main‐chain polyfullerenes.
Marco Antônio GB Gomes   +4 more
wiley   +1 more source

Advances in Unconventional and Sustainable Synthetic Approaches to Benzopyran Scaffolds

open access: yesThe Chemical Record, EarlyView.
This review provides a comprehensive and critical analysis of low‐impact synthetic methodologies reported in the last 8 years (2018–2026) for the construction of benzopyran‐derived scaffolds, such as coumarins, flavones, chromones, chromenes, and chromanes. The benzopyran scaffold is a versatile family of heterocycles found in a wide range of bioactive
Nathalia B. Sá   +4 more
wiley   +1 more source

Understanding the Dynamics of Mechanically Interlocked Molecular Systems via Metadynamics Simulations

open access: yesThe Chemical Record, EarlyView.
This Personal Account discusses how molecular simulations help uncover motion, shuttling mechanisms, and kinetics in mechanically interlocked molecules such as rotaxanes and catenanes. Mechanically interlocked molecules, such as rotaxanes and catenanes, display complex internal dynamics and reciprocal motions that are central to their use as artificial
Clara Sabrià   +6 more
wiley   +1 more source

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