Results 21 to 30 of about 20,827 (302)

Reactions of 2-methylchromones with cyanoacetamides and ethyl cyanoacetate. synthesis of 6-(2-hydroxyaryl)-4-methyl-2-oxo-1,2-dihydropyridine-3- carbonitriles and 7-hydroxy-6-imino-9-methyl-6h-benzo[c]chromene-8-carbonitriles [PDF]

open access: yes, 2013
Although 2-methylchromones react with cyanoacetamide and N-methyl cyanoacetamide in the presence of sodium ethoxide in refluxing ethanol to produce 6-(2-hydroxyaryl)-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitriles, their reactions with ethyl ...
Al Naimi   +23 more
core   +4 more sources

The Construction of Polycyclic Pyridones via Ring-Opening Transformations of 3-hydroxy-3,4-dihydropyrido[2,1-c][1,4]oxazine-1,8-diones

open access: yesMolecules, 2023
This work describes the synthesis of 3-hydroxy-3,4-dihydropyrido[2,1-c][1,4]oxazine-1,8-diones, their tautomerism, and reactivity towards binucleophiles. These molecules are novel and convenient building-blocks for the direct construction of biologically
Viktoria V. Viktorova   +3 more
doaj   +1 more source

5-Methyl-2-pyridone [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2011
The crystal structure of the title compound, C(6)H(7)NO, is stabilized by inter-molecular N-H⋯O hydrogen bonds, resulting in inversion dimers. The structure is further consolidated by weak C-H⋯O hydrogen bonds.
Shulin Mao, Luo Yanghui, Pan Meiling
openaire   +3 more sources

2-Pyridone: monoclinic polymorph [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2009
تتكون الوحدة غير المتماثلة في مركب العنوان، C(5)H(5)NO، من جزيئتين مستقلتين ولكن متطابقتين تقريبًا من 2 -بيريدون، وتمثل شكلًا متعددًا أحادي الميل من شكل أورثو- روم- بيك (P2 (1)2(1)2(1)) [Penfold (1953▶). أكتا كريست .6، 591-600 ؛ أومس وآخرون. (1984▶). Z. Kristallogr.169، 185-200 ؛ Yang & Craven (1998▶). أكتا كريست. B54، 912-920]. ترتبط الحبيبات الجزيئية
Hadi D. Arman   +2 more
openaire   +3 more sources

13C- and 1H-NMR substituent-induced chemical shifts in N(1)-(4-substituted phenyl)-3-cyano-4,6-dimethyl-2-pyridones [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
The 13C- and 1H-NMR chemical shifts of thirteen N(1)-(4-substituted phenyl)-3-cyano-4,6-dimethyl-2-pyridones were measured in deuterated dimethyl sulfoxide (DMSO-d6). The correlation analysis for the substituent-induced chemical shifts (SCS) with sigmap,
BRATISLAV Z. JOVANOVIC   +4 more
doaj   +3 more sources

A 2-pyridone-amide inhibitor targets the glucose metabolism pathway of Chlamydia trachomatis. [PDF]

open access: yes, 2014
UnlabelledIn a screen for compounds that inhibit infectivity of the obligate intracellular pathogen Chlamydia trachomatis, we identified the 2-pyridone amide KSK120.
Almqvist, Fredrik   +12 more
core   +4 more sources

A novel non-peptidic agonist of the ghrelin receptor with orexigenic activity in vivo [PDF]

open access: yes, 2016
Loss of appetite in the medically ill and ageing populations is a major health problem and a significant symptom in cachexia syndromes, which is the loss of muscle and fat mass. Ghrelin is a gut-derived hormone which can stimulate appetite.
Clarke, Sarah L.   +7 more
core   +2 more sources

Rhodium-Catalyzed C4-Selective C-H Alkenylation of 2-Pyridones by Traceless Directing Group Strategy.

open access: yesOrganic Letters, 2021
A rhodium-catalyzed C4-selective C-H alkenylation of 3-carboxy-2-pyridones with styrenes has been developed. The carboxylic group at the C3 position works as the traceless directing group, and the corresponding C4-alkenylated 2-pyridones are obtained ...
Sunit Hazra, K. Hirano, M. Miura
semanticscholar   +1 more source

Efficient synthesis of novel thieno[3,2-b]-, [2,3-c]- and [3,2-c]pyridones by Sonogashira coupling of bromothiophenes with terminal alkynes and subsequent intramolecular C-N bond-forming reaction [PDF]

open access: yes, 2013
The coupling of bromothiophenes with terminal alkynes using triethylamine or diisopropyl amine under Sonogashira conditions (PdCl2(PPh 3)2, CuI) followed by subsequent addition of amines or ammonium to the intermediate thienyl acetylenes represents a ...
Abbasi, M. S. A.   +7 more
core   +1 more source

3-Cyano-4,6-dimethyl-2-pyridone (Guareschi pyridone)

open access: yesActa Crystallographica Section E Structure Reports Online, 2004
In the crystal structure of the title compound, C8H8N2O, the mol­ecules form centrosymmetric dimers via N—H⋯O hydrogen bonds.
Victor B. Rybakov   +3 more
openaire   +1 more source

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