Results 201 to 210 of about 39,473 (242)
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Bidirectional Catalysis by Copper-Containing Nitrite Reductase
Biochemistry, 2004The copper-containing nitrite reductase from Alcaligenes faecalis S-6 was found to catalyze the oxidation of nitric oxide to nitrite, the reverse of its physiological reaction. Thermodynamic and kinetic constants with the physiological electron donor pseudoazurin were determined for both directions of the catalyzed reaction in the pH range of 6-8.
Wijma, H.J. +3 more
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Chemical & Engineering News Archive, 2013
The copper-catalyzed addition of azides and alkynes to form triazoles has been hailed as the creme de la creme of click chemistry—a way to assemble molecules via rapid, irreversible reactions. It is an efficient way to make biological probes, novel polymers, drug candidates, and smart materials.
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The copper-catalyzed addition of azides and alkynes to form triazoles has been hailed as the creme de la creme of click chemistry—a way to assemble molecules via rapid, irreversible reactions. It is an efficient way to make biological probes, novel polymers, drug candidates, and smart materials.
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A Fluxional Copper Acetylide Cluster in CuAAC Catalysis
Angewandte Chemie - International Edition, 2015AbstractA molecularly defined copper acetylide cluster with ancillary N‐heterocyclic carbene (NHC) ligands was prepared under acidic reaction conditions. This cluster is the first molecular copper acetylide complex that features high activity in copper‐catalyzed azide–alkyne cycloadditions (CuAAC) with added acetic acid even at −5 °C.
Bernd F. Straub +2 more
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Journal of the American Chemical Society, 2017
The merger of photoredox catalysis with asymmetric copper catalysis have been realized to convert achiral carboxylic acids into enantiomerically enriched alkyl nitriles. Under mild reaction conditions, the reaction exhibits broad substrate scope, high yields and high enantioselectivities.
Dinghai Wang +4 more
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The merger of photoredox catalysis with asymmetric copper catalysis have been realized to convert achiral carboxylic acids into enantiomerically enriched alkyl nitriles. Under mild reaction conditions, the reaction exhibits broad substrate scope, high yields and high enantioselectivities.
Dinghai Wang +4 more
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ChemInform Abstract: Copper in Catalysis
ChemInform, 1997AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Copper catalysis in a blue light
Science, 2016Visible light, copper, and a phosphine ligand combine for C-N bond formation at fully substituted chiral centers [Also see Report by Kainz et al. ]
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Trivalent copper catalysis of the autoxidation of copper(II) tetraglycine
Inorganic Chemistry, 1978Oxygen reacts with copper(I1) tetraglycine (G4) solutions at pH 7-9 to give CUI~'(H-~G~)(where H-, refers to three deprotonated peptide nitrogens coordinated to copper) as an intermediate leading to the oxidation of the peptide, A dehydropeptide which hydrolyzes to diglycinamide and glyoxylglycine is the major product of the peptide oxidation.
James L. Kurtz +2 more
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Copper Catalysis for Selective Heterocoupling of Terminal Alkynes
Journal of the American Chemical Society, 2016A Cu-catalyzed selective aerobic heterocoupling of terminal alkynes is disclosed, which enables the synthesis of a broad range of unsymmetrical 1,3-diynes in good to excellent yields. The results disprove the long-held belief that homocouplings are exclusively favored in the Glaser-Hay reaction.
Lebin, Su +6 more
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Dispersed copper oxide: A multifaceted tool in catalysis
Inorganica Chimica Acta, 2012The preparation of highly dispersed copper oxide over different supports by means of a simple and versatile technique makes available a family of catalysts active for different kind of transformations. The proper choice of the inorganic matrix used as the support shapes the electronic properties of the deposited phase and, as a consequence, its ...
Scotti Nicola +2 more
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