Results 111 to 120 of about 45,031 (289)
Synthesis, XRD and HS-Analysis [PDF]
, 2019 An efficient microwave-assisted one-step synthetic route toward Mannich bases is developed from 4-hydroxyacetophenone and different secondary amines in quantitative yields, via a regioselective substitution reaction.
Albar, Arwa +6 more
core +1 more source
Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.Heterogeneous‐catalyzed selective and versatile hydrogenative functionalizations of phthalimides have been developed for the first time. By using a solid nanocomposite formed by [Ag/Al2O3] material in combination with [H‐BETA] zeolite as cocatalyst, a broad range of 3‐functionalized isoindolinones have been accesed in one‐pot from phthalimides, H2 and ...
Carles Lluna‐Galán +2 more
wiley +1 more source
Facile Access to N‐Substituted Pyridyl Ligands
Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.A modular, robust, and versatile Buchwald–Hartwig amination protocol that enables the rapid synthesis of bipyridine, phenanthroline, terpyridine, and pybox ligands bearing dialkylamine, diarylamine, and heteroaromatic N‐substituents. Pyridyl motifs equipped with N‐substituents can be powerful ligands for catalysis, yet their broader adoption is limited
Adam Petrik +5 more
wiley +1 more source
Cure of epoxy resins determined by simple tests [PDF]
, 1968 Rapid visual and simple quantitative tests indicate the degree of cure of particular epoxy resin binders in prepreg stock.
Ladaki, M., Nigh, W. G.
core +1 more source
Angewandte Chemie, Volume 138, Issue 17, 20 April 2026.Rh‐catalyzed chemodivergent parallel kinetic resolution of racemic 1,6‐enynes with α‐fluoroacrylamides or mixtures of different acrylamides proceeded via [2+2+2] cycloaddition and C–H alkylation to afford structurally and stereochemically distinct products with high selectivity under mild conditions.
Shintaro Hamada +5 more
wiley +2 more sources
Zeitschrift für Naturforschung B, 1972 A new synthesis has been developed for the hitherto unreported 2-substituted-3-oxo-4H-1,4-oxazines 3b-3j via the cyclodehydrohalogenation of N-aryl-N-dichloroacetyl-2-amino-4′-nitroacetophenones in dimethyl sulfoxide with potassium t-butoxide. The structures of all the oxazine derivatives have been verified by IR and NMR spectroscopy and correlations ...
openaire +1 more source
Impact of copper and iron binding properties on the anticancer activity of 8-hydroxyquinoline derived Mannich bases. [PDF]
, 2018 The anticancer activity of 8-hydroxyquinolines relies on complex formation with redox active copper and iron ions. Here we employ UV-visible spectrophotometry and EPR spectroscopy to compare proton dissociation and complex formation processes of the ...
Enyedy, Éva A. +7 more
core +1 more source
ChemPlusChem, Volume 91, Issue 5, May 2026.Insert text for Table of Contents here. In this research, the synthesis of new Cyrene derivatives (Cyrene dimethyl acetal and Cyrene diethyl acetal) was accomplished, and the investigation of their physicochemical properties was completed. It was also shown after a detailed optimization study that Cyrene dimethyl acetal could be an appropriate ...
Attila Takács +6 more
wiley +1 more source
Reactions of N-acetylcysteine adducts of aromatic (di)isocyanates with functional groups of organic molecules [PDF]
, 2008 Glutathione thiocarbamate conjugates of isocyanates play a key role in transport and final reactions of isocyanates in the human body by transcarbamoylation. N-acetylcysteine is the simplest model for thiocarbamate reactions.
Frank, Petra +3 more
core
Electroanalysis, Volume 38, Issue 5, May 2026.First voltammetric characterization of fluorotropacocaine and development of a selective DPV method for real‐sample analysis. A Design of Experiments (DoE)‐optimized Florisil‐SPE cleanup enables up to 50× enrichment and sensitive detection in urine, with high selectivity against excipients, endogenous components, and co‐occurring new psychoactive ...
Giancarla Alberti +4 more
wiley +1 more source