Results 281 to 290 of about 20,092 (323)

Photoreactions of alkylated 2-pyridones

Journal of the Chemical Society, Perkin Transactions 2, 1985
Photoisomerisation and dimerisation reactions in solution have been studied with a series of alkylated 2- pyridones (1). The low quantum efficiencies for the photoisomerisation (0.01–0.07) are related to the short-lived singlet excited states (below 1 ns). The effects of temperature, solvent, and substrate concentration were also examined.
Ryoka Matsushima, Kazuhide Terada
openaire   +2 more sources

Rhodium(III)-Catalyzed Site-Selective C-H Alkylation and Arylation of Pyridones Using Organoboron Reagents.

Organic Letters, 2016
In this study we developed a method for the pyridine-directed, rhodium-catalyzed, site-selective C-H alkylation and arylation of pyridones using commercially available trifluoroborate reagents.
Panfeng Peng, Jiang Wang, Hualiang Jiang, Hong Liu   +3 more
semanticscholar   +1 more source

Rhodium-Catalyzed C6-Selective C-H Borylation of 2-Pyridones.

Organic Letters, 2016
A pyridine-directed, rhodium-catalyzed C6-selective C-H borylation of 2-pyridones with bis(pinacolato)diboron (pinB-Bpin) has been developed. The reaction proceeds smoothly under relatively mild conditions, and the corresponding C6-borylated 2-pyridones ...
W. Miura, K. Hirano, M. Miura
semanticscholar   +1 more source

Dimerization in the pyridone/hydroxypyridine tautomeric systems: relative stabilities of the dimers in the 2-pyridone/2-hydroxypyridine and in the 4-pyridone/4-hydroxypyridine systems

Journal of Molecular Structure: THEOCHEM, 1992
Abstract Three dimers created from the 2-pyridone/2-hydroxypyridine tautomers and four dimers created by the 4-pyridone/4-hydroxypyridine tautomers were described using ab initio self-consistent-field (SCF) calculation and the energies were corrected for the electron correlation contribution by using the second-order Moller-Plesset (MP2) perturbation
Andrzej Leś, Zdeněk Slanina, Ludwik Adamowicz   +2 more
openaire   +2 more sources

ChemInform Abstract: Synthetic Entries to Substituted Bicyclic Pyridones.

ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Cheng, DC, Croft, LJ, Abdi, M (UG), Lightfoot, A, Gallagher, T   +4 more
openaire   +5 more sources

Nickel-Catalyzed Directed C6-Selective C-H Alkylation of 2-Pyridones with Dienes and Activated Alkenes.

Journal of Organic Chemistry, 2017
A pyridine-directed, C6-selective nickel-catalyzed ring-contracting C-H alkylation of 2-pyridones with 1,5-cyclooctadiene (cod) has been developed. The reaction proceeds smoothly under external-ligand-free conditions and is accelerated uniquely by a ...
W. Miura, K. Hirano, M. Miura
semanticscholar   +1 more source

Regioselective α-arylation of coumarins and 2-pyridones with phenylhydrazines under transition-metal-free conditions

, 2016
A facile regioselective metal-free direct α-arylation of coumarins and 2-pyridones is achieved by the reaction of coumarins and 2-pyridones with phenylhydrazine in good yields.
P. Chauhan, Makthala Ravi, Shikha Singh, Prashant Prajapati, P. Yadav   +4 more
semanticscholar   +1 more source

Efforts towards Expansion of the Genetic Alphabet: Pyridone and Methyl Pyridone Nucleobases

Angewandte Chemie, 2006
Floyd E. Romesberg, Gil Tae Hwang, Shigeo Matsuda, Aaron M. Leconte   +3 more
openaire   +3 more sources

DERIVATIVES OF 2-PYRIDONE

The Journal of Organic Chemistry, 1946
Wilhelm Wenner, John T. Plati
openaire   +3 more sources

2-Pyridones

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