Results 81 to 90 of about 16,017 (235)
Chemistry – A European Journal, EarlyView.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 +5 more
wiley +1 more source
2-Thioorotic Acid (Pyridinium Salt) as a New Spectrophotometric Reagent for Copper(II) Determination
, 1993 School of Studies m Chemistry, Ravishankar University, Raipur-492 010 Central Pollution Control Board, Motinagar, Shillong-793 014 Manuscript received 19 May 1992, revised 23 February 1993, accepted 9 March 1993 2-Thioorotic Acid (Pyridinium Salt) as ...
NANDITA SHUKLA +2 more
core +1 more source
Crystal structure of 2-amino-5-nitropyridinium sulfamate
Acta Crystallographica Section E: Crystallographic Communications, 2015 The title molecular salt, C5H6N3O2+ ·H2NO3S−, was obtained from the reaction of sulfamic acid with 2-amino-5-nitropyridine. A proton transfer from sulfamic acid to the pyridine N atom occurred, resulting in the formation of a salt.
M. Ambrose Rajkumar +4 more
doaj +1 more source
Chemistry – A European Journal, EarlyView.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
Lipid Matrices Destabilization Induced by Some Newly Synthesized Pyridinium Salts
, 2017 The influence of some newly synthesized pyridinium salts on the structural behavior of two lipid matrices formed with POPC or POPE was investigated by using SAXD.
Yamaoka, Patrícia +9 more
core +1 more source
Crystal structure and thermal behaviour of pyridinium styphnate
Acta Crystallographica Section E: Crystallographic Communications, 2015 In the crystal structure of the title molecular salt, C5H6N+·C6H2N3O8− (systematic name: pyridinium 3-hydroxy-2,4,6-trinitrophenolate), the pyridinium cation and the 3-hydroxy-2,4,6-trinitrophenolate anion are linked through bifurcated N—H...(O,O ...
Selvarasu Muthulakshmi +1 more
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.As a metalloid with broad prospects in advanced applications, Te has not been fully clarified in terms of its intricate electrochemical behaviors across varied systems. This review systematically integrates fundamental electrochemical mechanisms, reaction kinetics identifications, and device application insights, establishing a comprehensive framework ...
Meng Zhang +6 more
wiley +1 more source
4-(4-Nitrobenzyl)pyridinium 3-carboxy-4-hydroxybenzenesulfonate
, 2013 In the title salt, C12H11N2O2+·C7H5O6S−, the dihedral angle between the benzene and pyridine rings in the 4-(4-nitrobenzyl)pyridinium cation is 82.7 (2)°.
Urs D. Wermuth +3 more
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Catalytic Functionalization of Unactivated π‐Bonds Enabled by Bidentate Directing Auxiliaries
Angewandte Chemie, Volume 138, Issue 28, 6 July 2026.This review explores how bidentate directing auxiliaries have advanced transition‐metal catalysis for unactivated alkene/alkyne functionalization. By leveraging chelated intermediates, bidentate directing auxiliaries enable precise hydrofunctionalization, difunctionalization, and C─H activation of π‐bonds with unique selectivity and reactivity.
Seunghyeon Cho +4 more
wiley +2 more sources
, 2016 A novel pyridinium salt photoelectrocyclization−nucleophilic bicyclic aziridine ring opening reaction sequence has been investigated in order to determine its preparative potential.
Rong Ling (3037014) +2 more
core +2 more sources