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Electrochemistry and Gold Catalysis: Unusual Allies in Redox Mediated Organic Reactions.
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Núcleo de Pesquisas em Produtos Naturais e Sintéticos (NPPNS), Departamento de Ciências BioMoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto (FCFRP), Universidade de São Paulo (USP), Ribeirão Preto-SP, 14040-903, Brazil.
Devising advanced protocols to avoid harsh oxidants is of paramount interest in gold catalyzed redox reactions. To address this issue, electrochemical oxidation of precatalytic Au complexes to catalytically active Au in situ species has started to emerge as a potential alternative. Such endeavours not only unlocked the possibility of direct anodic oxidation of Au to Au, but also enables stepwise oxidation of Au to Au to Au through the mediation of electro-generated organic radicals.
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Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel.
Cuprous oxide (CuO) thin films were chemically deposited from a solution onto GaAs(100) and (111) substrates using a simple three-component solution at near-ambient temperatures (10-60 °C). Interestingly, a similar deposition onto various other substrates including Si(100), Si(111), glass, fluorine-doped tin oxide, InP, and quartz resulted in no film formation. Films deposited on both GaAs(100) and (111) were found alongside substantial etching of the substrates.
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Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States.
We present the serendipitous discovery of an unusual dimer formed from anthracene-derived polyarenes. Unlike the typical oxidative coupling of substituted aromatic scaffolds, the reaction yielded a dearomatized enone dimer as the sole product. This dearomatized motif, notably, does not undergo the commonly observed rearomatization, and no biaryl products were detected.
View Article and Find Full Text PDFErlotinib-induced Perioral Lesions Resembling Scleroderma.
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View Article and Find Full Text PDFα-Olefin Oligomerization Mediated by Group 4 Metallocene Catalysts: An Extreme Manifestation of the Multisite Nature of Methylaluminoxane.
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Department of Chemical Sciences, Federico II University of Naples, via Cinthia, 80126 Napoli, Italy.
Group 4 metallocenes are competent catalysts for the oligomerization of higher α-olefins. Among the many chemical and physical variables of importance in the process, one is the choice of cocatalyst (activator). The impact of various activators on the performance of a representative catalyst, (nBuCp)ZrCl, in the oligomerization of 1-octene was thoroughly investigated; in particular, the molecular weight distribution (MWD) of the oligomers was determined by means of high-resolution high performance liquid chromatography (HR-HPLC).
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