Results 11 to 20 of about 9,299,574 (208)
Die Acylierung von 4‐Pyridon [PDF]
Chemische Berichte, 1980 AbstractBei der Acylierung von 4‐Pyridon (1) mit aliphatischen Carbonsäure‐anhydriden und ‐chloriden oder freien Säuren in Gegenwart von Dicyclohexylcarbodiimid erhält man ausschließlich N‐Acyl‐4‐pyridone (5). Auch bei der Umsetzung von 1 mit ortho‐substituierten Benzoesäurederivaten sind nur N‐Acylierungsprodukte 8 isolierbar.
Effenberger, Franz +2 more
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catena-Poly[[(nitrato-κ2O,O′)silver(I)]-μ3-4-pyridone-κ3O:O:O]
Acta Crystallographica Section E, 2009 In the title complex, [Ag(NO3)(C5H5NO)]n, the AgI atom is coordinated by two O atoms from two different 4-pyridone ligands and two O atoms from one nitrate anion, displaying a nearly planar coordination geometry.
Xian-Ge Wu, Jun-Xia Xiao, Liang Qin
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Endophytic Akanthomyces sp. LN303 from Edelweiss Produces Emestrin and Two New 2‑Hydroxy‑4 Pyridone Alkaloids [PDF]
ACS Omega, 2021 Martina Oberhofer +7 more
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Synthesis and characterization of Cu and Fe (1:2) metal complexes based on their substituted pyridones acid dyes and their application on wool fabrics [PDF]
Journal of Chemistry Letters, 2022 In this study, the investigation deals with synthesis of acid dyes from 4-amino-1-(4-sulfophenyl)- 3-methyl-5-pyrazolone and their pyridone derivatives and their metal complexes (Cu (II)and Fe (II)).
Olamide Ajani +2 more
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Extraction and Separation of Germanium(IV) with 4-Pyridone Derivatives
Croatica Chemica Acta, 2001 Extraction of germanium(IV) from aqueous hydrochloric, sulphuric and phosphoric acid Solutions with 3-hydroxy-2-methyl-1-phenyl-4-pyridone (HX) and 3-hydroxy-2-methyl-1-(4-tolyl)-4-pyridone (HY) dissolved in chloroform was studied. Extraction with HX took place in the acidity range 1-3 M H2SO4 or 0.5-9.5 M HCl and that with HY in the range 0.5-5 M ...
Vojković, Vlasta +2 more
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Tautomerism of 4-Pyridones [PDF]
Bulletin of the Chemical Society of Japan, 1977 Abstract The tautomeric constants, Kt, of several 4-pyridones were determined by measurement of pKa values. For 2-substituted 5-methoxy-4-pyridones, the Kt values were correlated to the substituent constants σ, the equation logkt=2.98+2.93σm−6.18σo being obtained.
Hiromichi Besso +2 more
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Synthetic and Systems Biotechnology, 2022 Piericidins are a large family of bacterial α-pyridone antibiotics with antitumor activities such as their anti-renal carcinoma activity exhibited recently in nude mice.
Wanlu Li +6 more
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Transacylierungen mit Acylderivaten des 4‐Pyridons [PDF]
Chemische Berichte, 1980 AbstractMit N‐Acyl‐4‐pyridonen (2a, b) sowie mit 4‐(Benzoyloxy)pyridin (3a) werden in Methylenchlorid oder Chloroform aliphatische und aromatische Amine sowie Thiole glatt zu den Amiden (4 – 6) und Thioestern (7, 8) acyliert. Primäre und sekundäre Alkohole reagieren langsamer, tert‐Butylalkohol nur noch mit 3a unter Basenkatalyse sowie mit den ...
Effenberger, Franz, Bessey, Eberhard
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An isoxazole strategy for the synthesis of 4-oxo-1,4-dihydropyridine-3-carboxylates
Beilstein Journal of Organic Chemistry, 2022 A method has been developed for the preparation of 2-alkyl-6-aryl-, 2-aryl-6-aryl and 2,6-diaryl-5-aryl/hetaryl-substituted methyl 4-oxo-1,4-dihydropyridine-3-carboxylates by Mo(CO)6-mediated ring expansion of methyl 2-(isoxazol-5-yl)-3-oxopropanoates ...
Timur O. Zanakhov +3 more
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, 2023 An efficient one-pot multicomponent reaction is reported for synthesizing a novel series 4-hydroxy-2-pyridone-fused spiropyran through the reaction of 4-hydroxy-6-methylpyridine-2-ones alkaloids, malononitrile or ethyl cyanoacetate, and ninhydrin or ...
Mahmood Kamali (16489191) +1 more
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