Results 91 to 100 of about 30,087 (242)

Efficient One‐Pot Synthesis of Benzothiazole Compounds From Vinamidinium Salts

ChemistryOpen, EarlyView.
A catalyst‐free one‐pot reaction of vinamidinium salts with benzothiazole hydrazines efficiently produces 1,3‐bis((3‐methylbenzo[d]thiazol‐2(3H)‐ylidene)hydrazineylidene)propan‐2‐ol (BBTA) and 1‐((1Z,3E)‐1‐(dimethylamino)‐3‐(((Z)‐3‐methylbenzo[d]thiazol‐2(3H)‐ylidene)hydrazineylidene)prop‐1‐en‐2‐yl)pyridin‐1‐ium (DMBT) derivatives.This simple method ...
Zeinab khosravi, Abdolmohammad Mehranpour, Mohammad Reza Mohammadizadeh, Genta Kojya, Satoru Arimitsuc   +4 more
wiley   +1 more source

Preparation of the Pyridinium Salts Differing in the Length of the N-Alkyl Substituent

Molecules, 2010
Quaternary pyridinium salts with chains ranging from C8 to C20 belong in the large group of cationic surfactants. In this paper, the preparation of such cationic surface active agents based on the pyridinium moiety and differing in the length of the N ...
Kamil Musilek, Jan Korabecny, Miroslav Pohanka, Ondrej Soukup, Jiri Cabal, Petr Stodulka, Jan Marek, Kamil Kuca   +7 more
doaj   +1 more source

Alkaloid inspired spirocyclic oxindoles from 1,3-dipolar cycloaddition of pyridinium ylides [PDF]

, 2013
Cycloaddition reactions between pyridinium ylides and 3-alkenyl oxindoles that proceed in high yield and with very good regio- and diastereoselectivity are reported. The resulting cycloadducts have the same stereochemistry of biologically active oxindole
Castledine, Richard A., Day, Jonathan, Dowden, James, Lewis, William, McKeever-Abbas, Ben, Uroos, Maliha   +5 more
core   +3 more sources

Water Co‐Adsorption in Ultrathin Films of Ionic Liquids on Pt(111)

ChemistryOpen, EarlyView.
At 100 K, IL adsorption on D2O precovered Pt(111) partially displaces interfacial water resulting in a water‐IL co‐adsorbed layer. Upon heating to 130 K, IL ions migrate to the metal interface, thereby destabilizing adsorbed water as shown by the ≈10 K reduction in its desorption temperature.
Timo Talwar, Hans‐Peter Steinrück, Florian Maier   +2 more
wiley   +1 more source

Synthesis and Characterization of a Cerium(IV) Coordination Polymer Containing Isonicotinic Acid Zwitterions

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
The new coordination polymer [Ce4O2(OH)2(NO3)2(C6H5NO2)8](NO3)8 is reported. It was discovered during a ligand screening experiment. Its crystallization was studied in situ via powder X‐ray diffraction and X‐ray absorption near‐edge structure spectroscopy.
Niklas Ruser, Folke Weidemann, Jonas Gosch, Felix Steinke, Anastasia Yu. Molokova, Kirill A. Lomachenko, Diletta Morelli Venturi, Christoph Meier, Bastian Achenbach, Norbert Stock   +9 more
wiley   +1 more source

B‐N Fused Anthracene as Functional Linker for π‐Extended Viologens: Near‐IR Emission and Electrochromism

Angewandte Chemie, Volume 138, Issue 5, 28 January 2026.
We introduce π–extended viologens with B‐N fused dipyridylanthracene (BDPA) as conduit for delocalization. Quaternization of pyridyl‐substituted BDPA by methylation or Lewis pair formation with B(C6F5)3 produces strongly colored compounds that are emissive in the near‐IR.
Rajendra Prasad Nandi, Jingyao Zuo, Abhishek Shibu, Frieder Jäkle   +3 more
wiley   +2 more sources

Bis[2-(2,4-dinitrobenzyl)pyridinium] biphenyl-4,4′-disulfonate trihydrate

Acta Crystallographica Section E, 2010
In the structure of the title salt, 2C12H10N3O4+·C12H8O6S22−·3H2O, determined at 173 K, the biphenyl-4,4′-disulfonate dianions lie across crystallographic inversion centres with the sulfonate groups ...
Graham Smith, Urs D. Wermuth, David J. Young   +2 more
doaj   +1 more source

Pyridinium N-heteroarylaminides: synthesis of N-heteroaryltetramines based on 1,6-bis(phenoxy)hexane and 1,3-bis(phenoxymethyl)benzene [PDF]

, 2007
The synthesis of a set of new N-heteroaryltetramines is reported. A regioselective alkylation on the N-exo nitrogen of pyridinium N-(heteroaryl)aminide with the corresponding tetrabromo compounds, followed by a clean N–N bond reduction of the ...
Castillo Romero, Rafael, Izquierdo Ceinos, Ma Luisa, Álvarez-Builla Gómez, Julio   +2 more
core   +2 more sources

Electrochemical Carbon Dioxide Reduction to Methanol on Copper‐Based Catalysts: Mechanistic Insights and Industrial Prospects

Advanced Materials, Volume 38, Issue 9, 12 February 2026.
This review presents a focused and integrated perspective on copper‐based catalysts for the selective electrochemical reduction of CO2 to methanol. It elucidates active site dynamics, mechanistic pathways, and structure–activity relationships, while connecting fundamental insights with catalyst design, reactor engineering, and techno‐economic ...
Debabrata Bagchi, Carsten Walter, Venkata S. R. K. Tandava, Yasmin Lucero Cobos‐Becerra, Jack C. Q. Fletcher, Nico Fischer, Tobias Sontheimer, Prashanth W. Menezes   +7 more
wiley   +1 more source

N-azinylpyridinium N-aminides: tandem reactions with alpha-halocarbonyl derivatives and analogs [PDF]

, 2000
Pyridinium-N-(2´-pyridyl)aminide was reacted with different α-halocarbonyl derivatives and related compounds. The method allows an easy preparation of several heterocyclic building blocks, all including the 2-aminopyridine moietyAuthor wish to thank C.I ...
Burgos García, Carolina, Martínez Barrasa, Valentín, Rosa, Rebeca de la, Álvarez-Builla Gómez, Julio   +3 more
core   +2 more sources