Results 211 to 220 of about 41,751 (271)

London Dispersion versus Intramolecular Hydrogen Bond in Bis-Pyridines: How Accurate Is DFT for Competing Noncovalent Interactions in the Condensed Phase? [PDF]

Chemistry
Savoy A, Gorbachev V, Stindt CN, Chen P.
europepmc   +1 more source

SuperBola Cationic Biocides with an Extended Bolaamphiphilic Structure: How Much Is Too Much? [PDF]

ACS Infect Dis
Muldagaliyeva AY, Talbot DE, Bezold EL, Wuest WM, Minbiole KPC.   +4 more
europepmc   +1 more source

Picosecond time-resolved infra-red spectroscopic study of a water-soluble cationic copper-porphyrin with nucleic acids.

Phys Chem Chem Phys
Keane PM, Graczyk D, Sazanovich IV, Towrie M, Quinn SJ, Kelly JM.   +5 more
europepmc   +1 more source

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Inhibition of Acetylcholinesterase by three New Pyridinium Compounds and their Effect on Phosphonylation of the Enzyme

Journal of Enzyme Inhibition and Medicinal Chemistry, 1999
Three new mono-pyridinium compounds were prepared: 1-phenacyl-2-methylpyridinium chloride (1), 1-benzoylethylpyridinium chloride (2) and 1-benzoylethylpyridinium-4-aldoxime chloride (3) and assayed in vitro for their inhibitory effect on human blood acetylcholinesterase (EC 3.1.1.7, AChE).
Nicoletta Bürger, Jasna Lovric
exaly   +6 more sources

Antithrombotic Effects of Pyridinium Compounds Formed from Trigonelline upon Coffee Roasting

Journal of Agricultural and Food Chemistry, 2014
Coffee may exert a preventive effect on arterial thrombosis. Trigonelline is one of the most abundant compounds in coffee that undergoes pyrolysis upon roasting of coffee beans. The aim of the present study was to identify pyridinium compounds formed upon trigonelline pyrolysis and coffee roasting and to investigate the effect of three of them, i.e., 1-
Bartlomiej Kalaska, Agnieszka Leszczynska, Bartosz Michalowski   +2 more
exaly   +3 more sources

Quasielastic neutron scattering study of pyridinium cation reorientation in thiourea pyridinium nitrate inclusion compound

The Journal of Chemical Physics, 2008
The dynamics of the pyridinium cation in thiourea pyridinium nitrate inclusion compound has been studied using quasielastic neutron scattering in a wide temperature range (10–350K). The elastic incoherent structure factor was determined from neutron backscattering and time-of-flight measurements and its analysis allows to describe in detail the ...
A, Pajzderska, M A, Gonzalez, J, Wasicki
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Oxidation of Active Methylene Compounds by Pyridinium Chlorochromate

Synthetic Communications, 1988
Abstract 1-Aryl-1,2-diketones 6 have been obtained by pyridinium chlorochromate oxidation of benzylketones 5. In the same way 2-buten-1, 4-olide 2 and 3H-benzofuran-2-one 4 have been obtained.
Francesco Bonadies, Carlo Bonini
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Excited-state dynamics of thiophene substituted betaine pyridinium compounds

Phys. Chem. Chem. Phys., 2014
This work deals with the photophysics of novel pyridinium betaine based on 2-pyridin-1-yl-1H-benzimidazole (SBPa) substituted symmetrically by mono- (Th2SBPa) and bi-thiophene fragments (Th4SBPa). The study is based on a combination of steady-state, femtosecond transient absorption spectroscopic measurements supported by PCM-(TD)DFT calculations. It is
Aloïse, S., Pawlowska, Z., Poizat, O., Buntinx, G., Perrier, A., Maurel, F., Ohkawa, K., Kimoto, A., Abe, J.   +8 more
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1,1′-Alkylene bis-pyridinium compounds as pickling inhibitors

Corrosion Science, 1990
The inhibition efficiencies of 1,1′-alkylene bis-pyridinium compounds have been studied for corrosion of mild steel in 0.5 M H2SO4. Substitution in the pyridine ring (R = CH3, COOH etc.) has a pronounced effect on the inhibition efficiency, though the length of the alkyl chain bound to the quaternary nitrogen atom is markedly reduced.
G. Subramaniam, K. Balasubramanian, P. Sridhar   +2 more
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