Results 21 to 30 of about 52,626 (269)

Synthesis, Characterization, Biological Evaluation, and In Silico Studies of Imidazolium-, Pyridinium-, and Ammonium-Based Ionic Liquids Containing n-Butyl Side Chains

Molecules, 2022
Ionic liquids (ILs) have emerged as active pharmaceutical ingredients because of their excellent antibacterial and biological activities. Herein, we used the green-chemistry-synthesis procedure, also known as the metathesis method, to develop three ...
Rabia Hassan, Farzana Nazir, Mah Roosh, Arshemah Qaisar, Uzma Habib, Abdulrahim A. Sajini, Mudassir Iqbal   +6 more
doaj   +1 more source

Stille Reaction on Pyridinium Cations. [PDF]

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
García Cuadrado, Domingo, Cuadro Palacios, Ana María, Álvarez-Builla Gómez, Julio, Vaquero López, Juan José   +3 more
openaire   +2 more sources

1,1′-{[3,5-Bis((dodecyloxycarbonyl)-4-phenyl-1,4-dihydropyridine-2,6-diyl]bis(methylene)}bis[4-(anthracen-9-yl)pyridin-1-ium] Dibromide

Molbank, 2022
A synthesis of a cationic moiety and fluorescent moieties containing amphiphilic 1,4-dihydropyridine (1,4-DHP) derivatives was performed starting with the Hantzsch-type cyclization of dodecyl acetoacetate, phenylaldehyde and ammonium acetate. Bromination
Reinis Ozolins, Mara Plotniece, Karlis Pajuste, Reinis Putralis, Nadiia Pikun, Arkadij Sobolev, Aiva Plotniece, Martins Rucins   +7 more
doaj   +1 more source

Catalytic reactions of pyridinium and iminium ions

, 2022
Watson, Mary P.The dissertation focuses on transition metal catalysis of cationic species to make C-C bonds. ☐ Chapter 1 describes a nickel-catalyzed Suzuki-Miyaura cross-coupling of benzylic pyridinium salts. The pyridinium salts act as electrophiles in
Guan, Weiye
core   +1 more source

Pyridinium-Inspired Organocatalysts for Carbon Dioxide Fixation: A Density Functional Theory Inspection

, 2023
The current project aims to apply the virtues of minimalism to examine the catalytic ability of commercially organic compounds of small chemical structures to catalyze the coupling reaction between carbon dioxide and propylene oxide (PO) under mild ...
Ibtesam M. Desoky, Ibtesam M. Desoky (14321870), Henry J. Curran, Morad M. El-Hendawy, Henry J. Curran (1267797), Mahmoud M. A. Mohamed (3704503), Morad M. El-Hendawy (14321867), Mahmoud M. A. Mohamed   +7 more
core   +1 more source

4-{(1E,3E)-4-[4-(Dimethylamino)phenyl]buta-1,3-dien-1-yl}-1-methylpyridin-1-ium iodide

IUCrData, 2016
The title molecular salt, C18H21N2+·I−, consists of a pyridinium cation and an I− anion. The cation exists in an E,E conformation with respect to the two C=C double bonds, and is roughly planar with the pyridinium ring being inclined to the benzene ring ...
S. John Sundaram, P. Sagayaraj, A. Antony Raj, E. R. A. Dravida Thendral, G. Usha   +4 more
doaj   +1 more source

Tetraaqua[3-oxo-1,3-bis(pyridinium-2-yl)propan-1-olato]nickel(II) tribromide dihydrate

Acta Crystallographica Section E: Crystallographic Communications, 2020
The crystal structure of the title compound, [Ni(C13H11N2O2)(H2O)4]Br3·2H2O, contains an octahedral NiII atom coordinated to the enol form of 1,3-dipyridylpropane-1,3-dione (dppo) and four water molecules. Both pyridyl rings on the ligand are protonated,
Barry L. Westcott, Guy Crundwell, Nilda L. Alicea-Velázquez   +2 more
doaj   +1 more source

Successive Crystallization of Organically Templated Uranyl Sulfates: Synthesis and Crystal Structures of [pyH](H₃O)[(UO₂)₃(SO₄)₄(H₂O)₂], [pyH]₂[(UO₂)₆(SO₄)₇(H₂O)], and [pyH]₂[(UO₂)₂(SO₄)₃]

ChemEngineering, 2021
Three new uranyl sulfates, [pyH](H3O)[(UO2)3(SO4)4(H2O)2] (1), [pyH]2[(UO2)6(SO4)7(H2O)] (2), and [pyH]2[(UO2)2(SO4)3] (3), were produced upon hydrothermal treatment and successive isothermal evaporation.
Evgeny V. Nazarchuk, Dmitri O. Charkin, Oleg I. Siidra   +2 more
doaj   +1 more source

Pyridinium-2-carboxyl­ate–benzene-1,2-diol (1/1) [PDF]

, 2009
The title compound, C6H5NO2·C6H6O2, crystallizes with one pyridinium-2-carboxyl­ate zwitterion and one mol­ecule of benzene-1,2-diol in the asymmetric unit.
Bolte, Michael, Michael Bolte, Cuong, Ton Quoc, Cuong Quoc Ton   +3 more
core   +1 more source

Crystal structure of 1-[(1-methyl-5-nitro-1H-imidazol-2-yl)methyl]pyridinium iodide

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title salt, C10H11N4O2+·I−, the asymmetric unit consists of a pyridinium cation bearning a (1-methyl-5-nitro-1H-imidazol-2-yl)methyl group at the N position and an iodide anion.
Roumaissa Belguedj, Abdelmalek Bouraiou, Hocine Merazig, Ali Belfaitah, Sofiane Bouacida   +4 more
doaj   +1 more source