Results 151 to 160 of about 60,159 (283)

Gold(I)‐Catalyzed Annulation of Pyridines Containing Alkyne: Synthesis of N‐Alkenyl Pyridonyl Azides via Rearrangement

Journal of Heterocyclic Chemistry, EarlyView.
One‐pot gold(I)‐catalysts synthesis was developed in order to prepare N‐alkenyl 2‐pyridonyl azides. This method provides a series of N‐alkenyl 2‐pyridonyl azides in moderate to excellent yields (up to 94%). ABSTRACT A novel strategy, involving the preparation of gold‐catalyzed cyclization salts and the rearrangement of these salts in the presence of ...
Ali Osman Karatavuk
wiley   +1 more source

Pyridinium cationic lipids as gene transfer agents

, 2004
Pyridinium cationic lipids useful as non-viral gene delivery agents are disclosed. The agents are prepared by reaction of pyrylium salts with primary amines.
Seitz, William A., Wentz, Melissa J., Johnson, Betty H., Ilies, Marc A. C., Thompson, Edward Bradbridge, Garfield, Robert E., Balaban, Alexandru T., Miller, Aaron L.   +7 more
core   +1 more source

Covalent Organic Framework Electrolytes for Solid‐State Lithium Batteries: Designing Ion Highways for Next‐Generation Energy Storage

Small, EarlyView.
Covalent organic frameworks provide a structurally programmable platform for solid‐state lithium batteries. This review outlines a design framework linking structural descriptors to ion‐transport metrics. It examines mechanisms of confinement, channel architecture, and hybrid designs, addressing the reasons for the occasional failure of high intrinsic ...
Rajesh Dhanushkotti, Ningaraju G. N., Karthik C. S., Karthik V, Anil Kumar M R, Jitendrasingh Rajpurohit, Jeremy I. G. Dawkins, Karim Zaghib   +7 more
wiley   +1 more source

Spectral studies on pyridinium hexafluorophosphate

, 1985
Pure samples of pyridinium hexafluorophosphate ($C_5H_5$$^+_NHPF^-_6$) were prepared by the reaction of pyridinium poly(hydrogen fluoride) and phosphorus(V) halides. The i.r.
Mohamed, Syed K, Padma, DK
core  

Super‐Electron‐Donor Polymers: From Monomer Design to Redox Functionality

Small, EarlyView.
2,2'‐Bipyridinylidenes are known for their “super‐electron‐donor” properties and have therefore been used beyond the field of organic synthesis. Their two‐electron redox process at a low potential of 1.8 V vs. Li/Li+ makes them attractive negative p‐type electrode‐active materials.
Luisa Rzesny, Aswadh Shyma Sajeevan, Caroline Schmidt, Johannes Lahr, Christoph Lorenz, Mathias Hermann, Nicolas Dupré, Stéven Renault, Philippe Poizot, Birgit Esser   +9 more
wiley   +1 more source

Molecularly Regulated Dynamic Interfaces in 3D/2D Perovskites Enabled by Functional Pyridinium Ionic Liquids

Small, EarlyView.
1‐butyl‐4‐methylpyridinium tetrafluoroborate (BMPyBF4) interacts with excess PbI2 during film formation, driving the formation of a low‐dimensional perovskite phase and enabling the self‐organization of a 3D/2D interfacial structure. This molecularly regulated interface suppresses defect‐mediated recombination and facilitates interfacial charge ...
Bulent Alkan, Faranak Sadegh, Ji‐Youn Seo, Thanh‐Danh Nguyen, Muhittin Unal, Daniel Prochowicz, Pankaj Yadav, Mucahit Yilmaz, Servet Turan, Seckin Akin   +9 more
wiley   +1 more source

Pyridinium and related azinium salts in organic synthesis and medicinal chemistry. [PDF]

RSC Adv
Mohammadi Mehr E, Alavi SM, Akbari M, Yazzaf R, Davaran S, Sepehri S, Mahdavi M.   +6 more
europepmc   +1 more source

Pyridine and pyridinium-based anion receptors

, 2010
Pyridine and pyridinium heterocycles play an important role in anion receptor chemistry. Hydrogen bond arrays are frequently preorganized by the presence of the pyridine nitrogen lone pair of electrons, whilst the positively charged pyridinium group is ...
Nathan Kilah (14741152), Beer, PD (15571769)   +1 more
core  

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

The Chemical Record, EarlyView.
Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra, Subba Rao Cheekatla, Keshaba Nanda Parida   +2 more
wiley   +1 more source

Catching Wyckoff’s Phantom: The Peculiar Crystal Structure of Orthorhombic Cs[ICl2]

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
Over 100 years after the first crystallographic elucidation, the still elusive orthorhombic modification of Cs[ICl2] could be isolated and structurally elucidated from the reaction of aqueous H[ICl4] with Cs2CO3. The [ICl2]− anion shows an unusually large bond length asymmetry, which shows characteristics of a Cl−∙∙∙I–Cl complex with an extremely ...
Jan Langwald, Antonio Frontera, Mathias S. Wickleder   +2 more
wiley   +1 more source