Search Results - "Affeldt, Ricardo F"
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Photoinduced, Direct C(sp2)−H Bond Azo Coupling of Imidazoheteroarenes and Imidazoanilines with Aryl Diazonium Salts Catalyzed by Eosin Y
Published in Chemistry : a European journal (06-04-2020)“…Herein, a greener approach to the eosin Y‐Na2 catalyzed, C(sp2)−H bond azo coupling of imidazoheteroarene with aryl diazonium salts is described, under acid…”
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Synthesis of Glycosyl Amides Using Selenocarboxylates as Traceless Reagents for Amide Bond Formation
Published in Journal of organic chemistry (01-07-2016)“…Carbohydrate-derived amides were successfully prepared in good yields from a broad range of substrates, including furanosyl and pyranosyl derivatives. The…”
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Imidazole-Functionalized Pillar[5]arenes: Highly Reactive and Selective Supramolecular Artificial Enzymes
Published in ACS catalysis (06-04-2018)“…Phosphate diester hydrolysis is strongly accelerated, by a factor of 104, in the presence of artificial enzymes especially designed in the light of…”
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Inhibitory and Cooperative Effects Regulated by pH in Host–Guest Complexation between Cationic Pillar[5]arene and Reactive 2‑Carboxyphthalanilic Acid
Published in Journal of organic chemistry (02-08-2019)“…The study of host–guest complexation between reactive 2-carboxyphthalanilic acid (CPA) and two cationic pillararenes has been carried out. Host–guest…”
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Visible‐Light Promoted Stereoselective Arylselanyl Functionalization of Alkynes
Published in European journal of organic chemistry (19-12-2018)“…Functionalization of double bonds with arylselenium groups found in the literature, commonly uses high temperatures in the presence of metal catalysts,…”
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Coordination among Bond Formation/Cleavage in a Bifunctional-Catalyzed Fast Amide Hydrolysis: Evidence for an Optimized Intramolecular N‑Protonation Event
Published in Journal of organic chemistry (03-04-2020)“…A density functional theory (DFT) computational analysis, using the ωB97X-D functional, of a rapid amide cleavage in 2-carboxyphthalanilic acid (2CPA), where…”
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An Imidazole‐Rich Pd(II)‐Polymer Pre‐catalyst for the Suzuki‐Miyaura Coupling: Stability Influenced by Dissolved Oxygen and Reactants Concentration
Published in ChemCatChem (08-03-2022)“…Herein a novel Pd(II)‐polymeric pre‐catalyst was prepared by coordinating Pd(II) ions to a low cost imidazole/carboxylate‐rich polymer. The material displays…”
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Frontispiece: Photoinduced, Direct C(sp2)−H Bond Azo Coupling of Imidazoheteroarenes and Imidazoanilines with Aryl Diazonium Salts Catalyzed by Eosin Y
Published in Chemistry : a European journal (06-04-2020)“…A sustainable visible‐light‐mediated, eosin Y catalyzed azo coupling of imidazoheteroarenes and ‐anilines with aryl diazonium salts was achieved successfully,…”
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Toward Heterogeneously Catalyzed Detoxification of Phosphotriesters: Insights from Kinetics and Theoretical Calculations
Published in Journal of physical chemistry. C (08-11-2018)“…A mixed Mg2+/Al3+ oxide featuring an incipient spinel phase was employed in the catalytic decomposition of a range of phosphate triesters, including the…”
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Synthesis of selenium-linked neoglycoconjugates and pseudodisaccharides
Published in Tetrahedron (23-12-2012)“…The introduction of organoselenium moieties within the structure of carbohydrates has received attention recently. Herein, we report on the synthesis of…”
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Seleno- and Telluro-xylofuranosides attenuate Mn-induced toxicity in C. elegans via the DAF-16/FOXO pathway
Published in Food and chemical toxicology (01-02-2014)“…•Se- and Te-xylofuranosides depicted low toxicity in C. elegans.•The compounds protected from toxicity-induced by Mn.•Se- and Te-xylofuranosides increased the…”
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Supramolecular Assembly between Cationic Pyridinium-Pillararene and Aminosalicylate Drug
Published in Journal of the Brazilian Chemical Society (2024)“…The preparation and characterization of a novel pillar[5]arene based supramolecular system with mesalazine, a prescribed aminosalicylate drug was successfully…”
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Imidazo[1,2-a]pyridine A3-Coupling Catalyzed by a Cu/SiO2 Material
Published in Journal of the Brazilian Chemical Society (2019)“…In this work, we report the preparation of a copper-silica material (Cu/SiO2) by a sol-gel methodology and its characterization concerning composition and…”
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