Results 221 to 230 of about 10,212 (248)
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New Synthetic Methods for 2‐Pyridone Rings

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Salvador Gil   +2 more
openaire   +3 more sources

Tautomerism and Microsolvation in 2-Hydroxypyridine/2-Pyridone

The Journal of Physical Chemistry A, 2010
The Fourier transform microwave spectra of the hydrated forms of the tautomeric pair 2-pyridinone/2-hydroxypyridine (2PO/2HP) have been investigated in a supersonic expansion. Three hydrated species, 2PO-H₂O, 2HP-H₂O, and 2PO-(H₂O)₂, have been observed in the rotational spectrum.
S. Mata   +6 more
openaire   +4 more sources

Enantioselective Photochemical Reactions of 2-Pyridones in Solution

Organic Letters, 2001
[reaction: see text] Two key photochemical reactions of prochiral 2-pyridones were studied in the presence of a chiral host. The [4 + 4]-photocycloaddition with cyclopentadiene (CpH) proceeded smoothly and with high enantioselectivity (84-87% ee). The absolute configuration of the endo-diastereoisomer was established by X-ray crystallography.
Thorsten Bach   +2 more
openaire   +3 more sources

Hybrid density functionals and ab initio studies of 2-pyridone–H2O and 2-pyridone–(H2O)2

Chemical Physics Letters, 2000
Abstract Theoretical calculations have been carried out on the interaction between water and the carbonyl base 2-pyridone. The calculations have been performed with two hybrid density functionals (B3-PW91 and B3-LYP). The comparison with experimental gas phase data as well as with results from the ab initio methods RHF and MP2 shows good performance ...
Ahmed Dkhissi   +2 more
openaire   +2 more sources

Über 6‐Thiazolyl‐2‐pyridone

Helvetica Chimica Acta, 1961
6‐Thiazolyl‐2‐pyridones, a new class of chelating agents of the bipyridyl type, have been synthesized from the thioamide of 2‐pyridone‐6‐carboxylic acid; the latter has been obtained starting from the acid via the ethyl ester, amide and nitrile.
I. Steffan, Bernhard Prijs
openaire   +2 more sources

Nitration of 1-methyl-2-pyridone

Chemistry of Heterocyclic Compounds, 1973
Nitration of 1-methyl-2-pyridone with 70% nitric acid or fuming nitric acid at 0–20°C proceeds in the 3 and 5 positions to give a mixture of mononitro isomers, the structures of which were proved by PMR spectroscopy. Mainly 3,5-dinitro-1-methyl-2-pyridone is formed by the action of fuming nitric acid or a nitrating mixture at 90°.
T. I. Likhomanova, N. P. Shusherina
openaire   +2 more sources

2-Pyridones [PDF]

open access: possibleChemistry of Heterocyclic Compounds, 1974
N. P. Shusherina, L. V. Betaneli
openaire   +1 more source

2-Pyridones

Chemistry of Heterocyclic Compounds, 1972
N. P. Shusherina, T. I. Likhomanova
openaire   +2 more sources

The photoreactions of N-methyl-2-pyridone

1970
In studying the photochemistry of N-methyl-2- pyridone, four products were observed. Besides the previously known dimer and bicyclic monomer, two new dimers were isolated. The quantum yields of product formation were measured, and it was found that only one intermediate was involved.
openaire   +2 more sources

2‐Pyridon‐Mesogene; 2‐Pyridon‐5‐carbonsäure‐ester

Zeitschrift für Chemie, 1978
Wolfgang Weissflog   +4 more
openaire   +2 more sources

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