Results 21 to 30 of about 636 (93)

Bifunctional Photocatalysts: Exploiting Proximity for Enhanced Reaction Performance

Chemistry – A European Journal, EarlyView.
This review covers the application of the bifunctional approach to photocatalysis as a means to attain (enhanced) enantioselectivity, and, more in general, as a strategy to enhance the catalytic performance through an effective use of short‐lived reaction intermediates.
Luigi Dolcini, Daniele Lavelli, Alberto Dal Corso, Luca Pignataro   +3 more
wiley   +1 more source

Photochemical Allylation of Aldehydes or Alkanes with Vinyl Cyclopropanes

ChemistryEurope
Vinyl cyclopropanes are useful linchpins for the synthesis of more complex scaffolds. In this work, we present an acylation or alkylation protocol of donor–acceptor vinyl cyclopropanes, employing tetra‐n‐butylammonium decatungstate as the photocatalyst ...
Naya A. Stini, Christoforos G. Kokotos
doaj   +1 more source

Charge State Influence on Stability and Isomerism in Dehydrogenated PAHs: Insights from Anthracene, Acridine, and Phenazine

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida, Farouk Hamza Reguig, Manuel Alcamí, Al Mokhtar Lamsabhi   +3 more
wiley   +1 more source

Light‐Induced Reactions of Small‐Membered Cyclic Carbonyl Compounds

European Journal of Organic Chemistry, Volume 29, Issue 10, 9 March 2026.
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

The TaCl₅-Mediated Reaction of Dimethyl 2-Phenylcyclopropane-1,1-dicarboxylate with Aromatic Aldehydes as a Route to Substituted Tetrahydronaphthalenes

Molecules
It is found that the reaction of dimethyl 2-phenylcyclopropane-1,1-dicarboxylate with 2 equivalents each of aromatic aldehydes and TaCl5 in 1,2-dichloroethane at 23 °C for 24 h after hydrolysis gives substituted 4-phenyl-3,4-dihydronaphtalene-2,2(1H ...
Tat’yana P. Zosim, Rita N. Kadikova, Roman A. Novikov, Alexander A. Korlyukov, Oleg S. Mozgovoj, Ilfir R. Ramazanov   +5 more
doaj   +1 more source

Alpha‐Ester Aryl Diazirines: Low‐Temperature Carbene Progenitors for Materials Applications

Advanced Synthesis &Catalysis, Volume 368, Issue 5, 3 March 2026.
A synthetic route to α‐ester aryl diazirines is established. The products are shown to have low activation temperatures, and to form stabilized singlet carbenes, resulting in high‐yielding C–H insertion to unactivated aliphatic bonds. Applications in materials science and tissue adhesion are proposed.
Kate Andersen, Nora Struchtrup, Adam Sylvain‐Stewart, Liliia Pestereva, Benjamin Godwin, Gino A. DiLabio, Jeremy E. Wulff   +6 more
wiley   +1 more source

Catalytic Asymmetric Synthesis of gem‐Dicyano‐Spirocyclopropyl Oxindoles by N‐9‐Anth‐PyBidine‐Co(OAc)2: Advantage of Three‐Component Coupling Approach

ChemistryEurope, Volume 4, Issue 3, March 2026.
Chiral gem‐dicyano‐spirocyclopropyl oxindoles are obtained by a chiral N‐9‐Anth‐PyBidine‐Co(OAc)2‐catalyzed asymmetric Michael/alkylation reaction of 3‐chlorooxindoles with alkylidenemalononitriles. The three‐component coupling reaction of 3‐chlorooxindoles, aldehydes, and malononitrile shows the advantage of not requiring the preparation of ...
Takaaki Saito, Ren Miyasaka, Kazumasa Kon, Yuri Takagi, Takayoshi Arai   +4 more
wiley   +1 more source

Neurophysiological Responses to Extra Virgin and Refined Olive Oils: A Pilot Study Combining Flavor Profiling, Electroencephalogram, and Standardized Low‐Resolution Brain Electromagnetic Tomography

Food Science &Nutrition, Volume 14, Issue 3, March 2026.
This study presents an integrated chemosensory approach combining electronic nose and electronic tongue systems with chemometric analysis to characterize the sensory properties of refined olive oils. Multivariate modeling revealed clear discrimination among samples based on aroma and taste profiles. The results demonstrate the potential of sensor‐based
Hee Sung Moon, Se Young Yu, Hyeonjin Park, Younglan Ban, Ji Sun Kim, Eui‐Cheol Shin   +5 more
wiley   +1 more source

The Electronically Confined Space Analogy Elucidates How Second‐Row Triatomic 18‐Valence‐Electron Molecules Shape Life and Light

ChemistryOpen, Volume 15, Issue 3, March 2026.
The Electronically Confined Space Analogy explains ozone's unique UV absorption by linking bent 18‐valence‐electron structures to enhanced stability and photochemical activity, offering a molecular‐level rationale for its dominance as Earth's stratospheric UV filter.
Jordi Poater, Clara Viñas, Francesc Teixidor   +2 more
wiley   +1 more source

Understanding the dynamic nature of plant lipid anabolic and catabolic metabolism is key to sustainable oilseed engineering

New Phytologist, Volume 249, Issue 5, Page 2196-2214, March 2026.
Summary Plant‐derived oils are essential sources of reduced carbon and various fatty acid (FA) structures for food, biofuels, and the oleochemical industry. Despite extensive efforts, engineering mainstream oilseed crops to produce high levels of industrially valuable unusual FAs (UFAs) remains challenging.
Prasad Parchuri, Sean T. McGuire, Matthew G. Garneau, Niña Alyssa M. Barroga, Philip D. Bates   +4 more
wiley   +1 more source