Results 21 to 30 of about 21,061 (224)
A method for the nucleophilic fluorination of 4-dimethylaminopyridine (DMAP) pyridinium salts
Results in Chemistry, 2023 Fluorinated organic compounds have proven to be beneficial in various industries. Recent research has utilized quaternary ammonium salts as precursors for fluorinations using the radioactive isotope 18F.
Derek Cressy +4 more
doaj +1 more source
Reaction of Pyridinium Salts with Active Methylene Compounds
YAKUGAKU ZASSHI, 2006 The carbon-carbon bond-forming reactions of 1-methyl-2-methylthiophenylpyridinium iodides with active methylene compounds (such as dimethyl malonate, malononitrile) using NaH as a base gave the 2-substituted methylene-1,2-dihydropyridine derivatives.
Reiko, Fujita +3 more
openaire +3 more sources
Molecules, 2022 Multidrug resistance (MDR), having a multifactorial nature, is one of the major clinical problems causing the failure of anticancer therapy. The aim of this study was to examine the antitumour effects of selected pyridinium salts, 1-methyl-3 ...
Jolanta Tarasiuk +2 more
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Oxidation of Some Aliphatic Alcohols by Pyridinium Chlorochromate -Kinetics and Mechanism
E-Journal of Chemistry, 2009 Kinetics of oxidation of some aliphatic primary and secondary alcohols viz., ethanol, propan-1-ol, propan-2-ol, butan-1-ol, butan-2-ol and 2-methyl butanol by pyridinium chlorochromate (PCC) have been studied in water- perchloric acid medium.
Sapana Jain, B. L. Hiran, C. V. Bhatt
doaj +1 more source
Nanomaterials and Nanotechnology, 2015 In this paper, crystalline iron-nickel alloy nanostructures were successfully prepared from two cationic pyridinium derivatives as soft templates in solution.
Jingxin Zhou +8 more
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Disiloxanes and Functionalized Silica Gels: One Route, Two Complementary Outcomes-Guanidinium and Pyridinium Ion-Exchangers. [PDF]
PLoS ONE, 2015 Five novel disiloxane compounds comprising guanidinium and pyridinium moieties were obtained with high yields and purity. The verified synthetic pathways were then applied for modification of pre-functionalized silica gel, producing materials with the ...
Łukasz Tabisz +4 more
doaj +1 more source
A Synthesis of Thiopyran Pyridinium Perchlorate Compounds
Journal of Al-Nahrain University Science, 2013 Asynthesis of four pyridinium perchlorate compounds have been prepared from reaction one mole pyrylium salt (product already) with one mole cysteine in room temp. and diagnosed spectrally (FT-IR., 1H-NMR) in addition to the accurate quantitative elemental analysis.Asynthesis of sixteen Thiopyranpyridinium perchlorate compounds from reaction one mole ...
Marwan F. All-Heety +3 more
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Antioxidants, 2022 In this work, we report the synthesis of curcuminoids with ionic liquid characteristics, obtained by incorporating alkyl-substituted pyridinium moiety rather than one phenyl group through a two-step process.
Oscar Forero-Doria +7 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy +5 more
wiley +1 more source
Advanced Healthcare Materials, EarlyView.TOC represents the synthesis of theory‐guided novel near‐infrared (NIR) light‐absorbing organic photosensitizers (OPS) enabling redox‐induced tumor phototherapy and single‐cell organelle tracking. ABSTRACT The design of organic photosensitizers that operate efficiently in the near‐infrared (NIR) region remains challenging due to the need to balance ...
Pragti +3 more
wiley +1 more source