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Tautomerization of formamide, 2-pyridone, and 4-pyridone: an ab initio study
Journal of the American Chemical Society, 1982The 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
Lithiation of 1-methyl-2-pyridone takes place mainly at the methyl group which then leads to a dimer (11) by addition to a second mol equivalent of pyridone at C-6. Lithiation of 1-methyl-4-pyridone takes place cleanly and efficiently at C-2; this lithio derivative gave a dimer (13) with a second mol equivalent of the pyridone and reacted with a ...
Premji Meghani, John A. Joule
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Lithiation of 1-methyl-2-pyridone takes place mainly at the methyl group which then leads to a dimer (11) by addition to a second mol equivalent of pyridone at C-6. Lithiation of 1-methyl-4-pyridone takes place cleanly and efficiently at C-2; this lithio derivative gave a dimer (13) with a second mol equivalent of the pyridone and reacted with a ...
Premji Meghani, John A. Joule
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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.
B. S. Thyagarajan +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.
B. S. Thyagarajan +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.
Xuchen Zhao, Jon D. Rainier
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Phototoxicity and photogenotoxicity of nine pyridone derivatives
Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 2003Nine structurally related pyridone derivatives were assayed for photogenotoxicity and phototoxicity in the Ames test, the chromosomal aberration test in V79 cells and the neutral red uptake (NRU) test in 3T3 cells. All nine compounds absorb light to a comparable degree at wavelengths between 380 and 430 nm.
E, Gocke +8 more
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Photoisomerization of 4-pyridones to 2-pyridones
Journal of the American Chemical Society, 1974Nobuyuki Ishibe, Jun Masui
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Chemistry of Heterocyclic Compounds, 1972
N. P. Shusherina, T. I. Likhomanova
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N. P. Shusherina, T. I. Likhomanova
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