On June 21, 2020, Paul, Melanie; Teubner, Melissa; Grimm-Lebsanft, Benjamin; Golchert, Christiane; Meiners, Yannick; Senft, Laura; Keisers, Kristina; Liebhaeuser, Patricia; Roesener, Thomas; Biebl, Florian; Buchenau, Soeren; Naumova, Maria; Murzin, Vadim; Krug, Roxanne; Hoffmann, Alexander; Pietruszka, Joerg; Ivanovic-Burmazovic, Ivana; Ruebhausen, Michael; Herres-Pawlis, Sonja published an article.COA of Formula: C7H10O3 The title of the article was Exceptional Substrate Diversity in Oxygenation Reactions Catalyzed by a Bis(μ-oxo) Copper Complex. And the article contained the following:
The enzyme tyrosinase contains a reactive side-on peroxo dicopper(II) center as catalytically active species in C-H oxygenation reactions. The tyrosinase activity of the isomeric bis(μ-oxo) dicopper(III) form has been discussed controversially. The synthesis of bis(μ-oxo) dicopper(III) species [Cu2(μ-O)2(L1)2](X)2 ([O1](X)2, X = PF6-, BF4-, OTf-, ClO4-), stabilized by the new hybrid guanidine ligand 2-(2-((dimethylamino)methyl)phenyl)-1,1,3,3-tetramethylguanidine (L1), and its characterization by UV/Vis, Raman, and XAS spectroscopy, as well as cryo-UHR-ESI mass spectrometry, are described. The highlight selective oxygenation of a plethora of phenolic substrates such as 1H-indol-7-ol, naphthalen-1-ol, pyridin-4-ol, etc. mediated by [O1](PF6)2, results in mono- and bicyclic quinones such as 3,4-pyridinedione, 1,2-naphthalenedione, 1H-indole-6,7-dione and provides an attractive strategy for designing new phenazines e.g., benzo[a]phenazine. The selectivity is predicted by using the Fukui function, which is hereby introduced into tyrosinase model chem. The bioinspired catalysis harnesses mol. dioxygen for organic transformations and achieves a substrate diversity reaching far beyond the scope of the enzyme. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).COA of Formula: C7H10O3
The Article related to phenazine preparation, quinone preparation phenylenediamine condensation copper complex catalyst, aryl alc oxygenation copper complex catalyst, copper catalysis, dioxygen activation, guanidines, phenazines, tyrosinase and other aspects.COA of Formula: C7H10O3
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