Results 41 to 50 of about 20,092 (323)
SynOpen, 2021 An efficient method for the synthesis of highly substituted bicyclic pyridone derivatives containing the dithiocarbamate group is reported via a one-pot three-component reaction of 2-(alkylthio)thioazlactones, diamines, and nitroketene dithioacetal in ...
Marziyeh Saeedi +6 more
doaj +1 more source
Enzymatic synthesis of vitamin B6 precursor [PDF]
, 2013 3-Cyano-4-ethoxymethyl-6-methyl-2-pyridone is an important precursor in the synthesis of vitamin B6, obtained in the addition reaction between 2-cyanoacetamide and 1-ethoxy-2,4-pentanedione catalyzed by lipase from Candida rugosa ...
Bezbradica Dejan I. +4 more
core +1 more source
Angewandte Chemie, EarlyView.Chemoselectivity Challenge: A precise catalyst design allows for chemoselectivity control over alkyne reactivity to yield pentafulvenes via (2 + 2 + 1) cyclotrimerization. Operative mechanism has been elucidated by means of stoichiometric and deuteration experiments, as well as DFT calculations.
Belinda Español‐Sánchez +6 more
wiley +2 more sources
Synthesis of Some New Enaminoketones, Analogous of Milrinone, 4,Pyrones and Related 4-Pyridones [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 1996 Synthesis of 4-(N,N- dimethylamino)-3-aryl-3-butene-2-one, ethyl-5-aryl-4-oxo-4H-pyran-2-carboxylate, ethyl-5-aryl-4-pyridones-2-carboxylate and 5-aryl-3-cyano-5-methyl-2-pyridones (aryl=3-thienyl, 2-furyl) are described.
Aziz Shahrisa, Salar Hemmati
doaj
Angewandte Chemie, EarlyView.N‐alkylated heteroarenes are key structural motifs in bioactive compounds, but their regioselective synthesis via coupling of readily available azoles with haloalkanes remains very challenging. Here, we present a mild biocatalytic approach that proceeds on gram‐scale, is highly chemo‐ and regioselective, offering rapid access to valuable N‐alkylated ...
Felipe Ospina +10 more
wiley +2 more sources
Synthesis of Some Novel Heterocyclic and Schiff Base Derivatives as Antimicrobial Agents
Molecules, 2015 Treatment of 2,3-diaryloxirane-2,3-dicarbonitriles 1a–c with different nitrogen nucleophiles, e.g., hydrazine, methyl hydrazine, phenyl hydrazine, hydroxylamine, thiosemicarbazide, and/or 2-amino-5-phenyl-1,3,4-thiadiazole, afforded pyrazole, isoxazole ...
Mohamed E. Azab +2 more
doaj +1 more source
Crystal structure of 2,6-dimethyl-4-pyridone hemihydrate
Acta Crystallographica Section E: Crystallographic Communications, 2015 The title compound (systematic name: 2,6-dimethyl-1H-pyridin-4-one hemihydrate), C7H9NO·0.5H2O, has a single planar molecule in the asymmetric unit with the non-H atoms possessing a mean deviation from planarity of 0.021 Å.
Dalena M. Nguyen +3 more
doaj +1 more source
2-Pyridone: monoclinic polymorph [PDF]
Acta 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 +4 more sources
Organometallic catalysis for applications in radical chemistry and asymmetric synthesis [PDF]
, 2014 Two organometallic catalysis studies are presented. The first one deals with the development of a new catalytic agent based on the mixture of a hydride and an iron salt to trigger efficient radical cyclization processes.
Ateywiohrera +17 more
core +2 more sources
Solution Equilibrium Studies on Anticancer Ruthenium(II)–eta6-p-cymene Complexes of 3-Hydroxy-2(1H)-pyridones [PDF]
, 2013 Ru-II(eta(6)-p-cymene) complexes of bidentate (0,0) alkoxycarbonylmethyl-3-hydroxy-2(1H)-pyridone ligands exhibit in vitro antitumor activity. We determined the stoichiometry and stability in aqueous solution of two examples by pH-potentiometry, H-1 NMR ...
Bognár, Gabriella M. +4 more
core +1 more source