Results 231 to 240 of about 12,719 (269)
Chlorosulfonation of 2-pyridones [PDF]
Chemistry of Heterocyclic Compounds, 1974 Chlorosulfonlyl-substituted 2-pyridones were obtained for the first time. The ability of 2-pyridone-3-sulfonyl chlorides to undergo conversion to sulfonylides of the pyridine series by the action of bases is shown in the case of 5,6,7,8-tetrahydro-2-quinolone-3-sulfonyl chloride.
T. I. Likhomanova +2 more
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Pyridone photoelectrocyclizations to pyridophenanthrenes
Tetrahedron, 2017Abstract This article describes the synthesis of pyridophenanthrenes from the stereoselective electrocyclization and [1,5]-hydride shift sequences of biphenyl pyridones. The regioselectivity of the reaction of meta-substituted biphenyl substrates depended on the electronic environment of the substituents.
Jon D. Rainier, Xuchen Zhao
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ChemInform Abstract: TAUTOMERIZATION OF FORMAMIDE, 2‐PYRIDONE, AND 4‐PYRIDONE: AN AB INITIO STUDY [PDF]
Chemischer Informationsdienst, 1982 The tautomerism of formamide, 2-pyridone, and 4-pyridone has been investigated by ab initio calculations using minimal, extended, and polarization basis sets. When the effects of geometry optimization, polarization functions, correlation energy (estimated by second-order Merller-Plesset perturbation theory), and zero-point vibration energy are combined,
H. Bernhard Schlegel +2 more
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Journal of the Chemical Society, Perkin Transactions 1, 1988
AbstractTreatment of (I) with BuLi results in lithiation of the methyl group and formation of the dimer (II); 6‐lithiation represents a minor pathway (15% (III) is obtained on quenching with D2O).
Premji Meghani, John A. Joule
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AbstractTreatment of (I) with BuLi results in lithiation of the methyl group and formation of the dimer (II); 6‐lithiation represents a minor pathway (15% (III) is obtained on quenching with D2O).
Premji Meghani, John A. Joule
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Photochemical Reactivity of Pyridones
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
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Ambident Reactivities of Pyridone Anions
Journal of the American Chemical Society, 2010The kinetics of the reactions of the ambident 2- and 4-pyridone anions with benzhydrylium ions (diarylcarbenium ions) and structurally related Michael acceptors have been studied in DMSO, CH(3)CN, and water. No significant changes of the rate constants were found when the counterion was varied (Li(+), K(+), NBu(4)(+)) or the solvent was changed from ...
Herbert Mayr, Martin Breugst
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Journal of the Chemical Society B: Physical Organic, 1968
The reaction between N-alkyl-2-pyridones and tetracyanoethylene produces 2 : 1 salts of the pyridone with pentacyanopropene. Metathetical exchange of these salts with 4H-quinolizin-4-one leads to mono- and bis-quinolizone salts. Similar salts are formed with hydroquinone in place of pentacyanopropene.
K. Rajagopalan +2 more
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The reaction between N-alkyl-2-pyridones and tetracyanoethylene produces 2 : 1 salts of the pyridone with pentacyanopropene. Metathetical exchange of these salts with 4H-quinolizin-4-one leads to mono- and bis-quinolizone salts. Similar salts are formed with hydroquinone in place of pentacyanopropene.
K. Rajagopalan +2 more
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Pyridones as Potential Antitumor Agents
Journal of Pharmaceutical Sciences, 1979AbstractDurch Persulfat‐Oxidation wird das Hydroxypyridin (I) in das Pyridon (II) übergeführt, aus dem das Acetylderivat (III) hergestellt wird.
John S. Driscoll, Deng Ruey Hwang
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Chemical Physics Letters, 2000
Abstract DFT/B3-LYP(6-31++G**) calculations are used to provide information on closed N – H ⋯ O H -bonded complexes, containing two hydrogen bonds. The studied model systems with two H-bonds are the 2-pyridone dimer, 2-pyridone–H2O and 2-pyridone–CH3OH.
R. Ramaekers +5 more
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Abstract DFT/B3-LYP(6-31++G**) calculations are used to provide information on closed N – H ⋯ O H -bonded complexes, containing two hydrogen bonds. The studied model systems with two H-bonds are the 2-pyridone dimer, 2-pyridone–H2O and 2-pyridone–CH3OH.
R. Ramaekers +5 more
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Photoionization of 2-pyridone and 2-hydroxypyridine
Physical Chemistry Chemical Physics, 2010We studied the photoionization of 2-pyridone and its tautomer, 2-hydroxypyridine by means of VUV synchrotron radiation coupled to a velocity map imaging electron/ion coincidence spectrometer. The photoionization efficiency (PIE) spectrum is composed of steps.
C. Poully, J. +10 more
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