Results 11 to 20 of about 104,064 (339)
Electrochemical meta-C–H sulfonylation of pyridines with nucleophilic sulfinates [PDF]
Nature CommunicationsConsidering the indispensable significance and utilities of meta-substituted pyridines in medicinal, chemical as well as materials science, a direct meta-selective C–H functionalization of pyridines is of paramount importance, but such reactions remain ...
Shi Qin +10 more
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On the Physiological Action of Pyridine [PDF]
The Journal of Physiology, 1894 T. Lauder Brunton, F. W. Tunnicliffe
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Scientific Reports, 2022 In this study, we reported the ammonium metavanadate (NH4VO3) as an efficient, cost-effective, and mild catalyst for the synthesis of substituted pyridines via a one-pot pseudo four-component reaction.
Jamal Rahimi +6 more
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Communications Chemistry, 2023 Substituted pyridines with diverse functional groups are important structural motifs found in numerous bioactive molecules. Several methodologies for the introduction of various bio-relevant functional groups to pyridine have been reported, but there is ...
Kannan Vaithegi +4 more
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Visible light-promoted synthesis of 2-aryl-(3-organoselanyl)thieno[2,3-b]pyridines
Green Chemistry Letters and Reviews, 2022 We describe a simple and environment-friendly visible light-promoted protocol to access 2-aryl-(3-organoselanyl)thieno[2,3-b]pyridines, through the selenocyclization of 3-(arylethynyl)-2-(alkylthio)pyridines in the presence of diorganyl diselenides as ...
Ricardo Hellwig Bartz +5 more
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ON PYRIDINE HEMOCHROMOGEN [PDF]
Journal of General Physiology, 1929 1. Cyanide hemochromogen probably contains one cyanide group per heme group. 2. The equilibrium between pyridine hemochromogen and its components, pyridine and reduced heme, is complicated to an unknown extent by the precipitation of reduced heme and the aggregation of pyridine hemochromogen. 3.
A. E. Mirsky, M. L. Anson
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Metastable Transitions in Pyridine and Pyridine Derivatives [PDF]
Zeitschrift für Naturforschung A, 1981 The kinetic energy released in metastable transitions in pyridine, 2, 3, 4 acetylpyridine and 2, 3, 4 aminopyridine differs for the different isomers. This indicates that the dissociation path-way of these compounds depends on the position of the nitrogen atom in the isomer.
M. D. Migahed +2 more
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Sublimation/vaporization and solvation enthalpies of monosubstituted pyridine derivatives
Chemical Thermodynamics and Thermal Analysis, 2022 Different sectors, including medicine and display technology, utilize substituted pyridines. To establish the quality of products manufactured from pyridines, chemical thermodynamics of the solvation and evaporation enthalpies of the pyridines are ...
Rawand S. Abdullah, Boris N. Solomonov
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On pyridine chloronium cations
Chemical Science, 2023 The lutidine elephants are pulling apart a dichlorine molecule and stabilizing the corresponding chloronium cation. The remaining chloride forms a trichloride anion. Unsubstituted pyridine, however, only forms a strongly polarized dichlorine adduct.
Patrick Pröhm +4 more
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Regioselective C–H Activation of Substituted Pyridines and other Azines using Mg- and Zn-TMP-Bases
SynOpen, 2018 The metalation of substituted pyridines, diazines and related N-heterocycles using TMPMgCl·LiCl, TMP2Mg·2LiCl, TMPZnCl·LiCl or TMP2Zn·2LiCl2·2MgCl2 (TMP = 2,2,6,6-tetramethylpiperidyl) in the presence or absence of a Lewis acid is reviewed ...
Moritz Balkenhohl, Paul Knochel
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