Results 191 to 200 of about 61,221 (238)

Design and Synthesis of Pyridinium-Based Zwitterionic Surfactants for Oilfield Applications: Structure-Performance Comparison of Fluoro- and Hydrocarbon Chains. [PDF]

ACS Omega
Israr M, Nazar M, Mahboob A, Hussain SMS.   +3 more
europepmc   +1 more source

Structure and Spectroscopic Characterisation of Phenanthroline‐Based Iodobismuthate(III) Complexes Utilised for Raw Acoustic Signal Classification

Advanced Intelligent Discovery, Volume 2, Issue 5, October 2026.
Memristors based on trimethylsulfonium (phenanthroline)tetraiodobismuthate have been utilised as a nonlinear node in a delayed feedback reservoir. This system allowed an efficient classification of acoustic signals, namely differentiation of vocalisation of the brushtail possum (Trichosurus vulpecula).
Ewelina Cechosz, Gisya Abdi, Andrzej Sławek, Marlena Gryl, Konrad Szaciłowski   +4 more
wiley   +1 more source

Phytochemistry, Pharmacological Potential, and Future Prospects of Abietane‐Type Diterpenoids From Salvia rosmarinus

Chemistry &Biodiversity, Volume 23, Issue 10, October 2026.
The review delves into the findings on abietane diterpenes from Salvia rosmarinus. It comprises the phytochemistry, biological activities, biosynthesis, degradation studies, semisynthesis, and pharmacokinetic studies of these compounds. The potential of these compounds for future development has also been highlighted.
Rida Siddiqui, Vipin Singh, Kapil Dev
wiley   +1 more source

Designing Pyridinium-Catalyzed Interfacial Polymerization for High-Performance Acid-Resistant Nanofiltration Membranes. [PDF]

Angew Chem Int Ed Engl
Peng H, Li J, Zhang Q, Zhao Q.
europepmc   +1 more source

Sulfur‐Bridged Cationic and Neutral [6]Helicenes: Chiral Trityls With Property and Stability Twists

ChemistryEurope, Volume 4, Issue 10, October 2026.
Replacing oxygen or nitrogen bridges with sulfur reshapes cationic [6]helicenes and simultaneously tunes their reactivity, photophysics, and configurational dynamics. Sulfur bridging increases helical curvature and electrophilicity, narrows electronic gaps to promote redshifted absorption and emission with larger Stokes shifts, yet unexpectedly lowers ...
Aurélien Chignac, Céline Besnard, Caterina Monti, Francesco Zinna, Gennaro Pescitelli, Jérôme Lacour   +5 more
wiley   +1 more source

Versatile Pyridinium Trifluoroborate Platform for Facile Preparation of ¹⁸F‑Labeled PET Tracers in Water. [PDF]

ACS Cent Sci
Li W, Li Y, Lyu T, Chen Y, Ma J, Fang Y, Zhang L.   +6 more
europepmc   +1 more source

Stereoretentive Nucleophilic Aromatic Substitution Accesses Atropisomeric 4‐Amino‐N‐Arylquinolinium Salts

Chemistry – A European Journal, Volume 32, Issue 37, 1 October 2026.
Quinolin‐4‐ones were converted to chloroquinolinium salts, allowing formation of axially chiral aminoquinolinium salts via an enantioretentive SNAr reaction with a variety of amine nucleophiles. The salts have a high rotational barrier, with a racemization half‐life of ∼1000s of years.
Darren Holmes, Nia Foster, Saima Ansari, Paul Kavanagh, Paul Dingwall, Peter C. Knipe   +5 more
wiley   +1 more source

Enantioselective synthesis of sulfondiimidoyl fluorides <i>via</i> pyridine-<i>N</i>-oxide-catalyzed sulfondiimidoyl transfer. [PDF]

Chem Sci
Li WJ, Zhang JH, Li N, Guo SJ, Tian Y, Xie MS, Guo HM.   +6 more
europepmc   +1 more source

Nitrooxylation in Organic Synthesis: From Classical Nitrate Ester Formation to Modern Catalytic Strategies

Chemistry – A European Journal, Volume 32, Issue 37, 1 October 2026.
Nitrooxylation—the installation of nitrate esters (–ONO2) has evolved from classical mixed‐acid protocols to catalytic and mechano‐, flow‐, photo‐, and electrochemical strategies. This review delineates ionic and radical manifolds for C–ONO2 bond formation, emphasizing mechanistic control, selected substrate scope, and selectivity.
Jayanta Dey, Dmitry Katayev
wiley   +1 more source