Journal ArticleDOI
Efficient ruthenium-catalyzed aerobic oxidation of alcohols using a biomimetic coupled catalytic system.
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TLDR
Most alcohols are oxidized to ketones in high yield and selectivity within 1-2 h, and the catalytic system tolerates a wide range of O(2) concentrations without being deactivated.Abstract:
Efficient Ruthenium-Catalyzed Aerobic Oxidation of Alcohols Using a Biomimetic Coupled Catalytic Systemread more
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Concurrent tandem catalysis
Journal ArticleDOI
Mechanistic aspects of transition metal-catalyzed hydrogen transfer reactions.
TL;DR: In this tutorial review recent mechanistic studies on transition metal-catalyzed hydrogen transfer reactions are discussed and an important question is whether the substrate coordinates to the metal (inner-sphere hydrogen transfer) or if there is a direct concerted transfer of hydrogen from the metal to substrate (outer-spheres hydrogen transfer).
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Hydroxyapatite-Supported Palladium Nanoclusters: A Highly Active Heterogeneous Catalyst for Selective Oxidation of Alcohols by Use of Molecular Oxygen
TL;DR: The present Pd catalyst does not require additives to complete the catalytic cycle, and the diameters of the generated Pd nanoclusters can be controlled upon acting on the alcohol substrates used.
Journal ArticleDOI
Catalytic Oxidation of Organic Substrates by Molecular Oxygen and Hydrogen Peroxide by Multistep Electron Transfer : A Biomimetic Approach
Julio Piera,Jan-Erling Bäckvall +1 more
TL;DR: The use of coupled catalytic systems with electron-transfer mediators usually facilitates the procedures by transporting the electrons from the catalyst to the oxidant along a low-energy pathway, thereby increasing the efficiency of the oxidation and thus complementing the direct oxidation reactions.
Journal ArticleDOI
Prevention of undesirable isomerization during olefin metathesis.
TL;DR: 1,4-Benzoquinones have been found to prevent olefin isomerization of a number of allylic ethers and long-chain aliphatic alkenes during ruthenium-catalyzed Olefin metathesis reactions, and this mild, inexpensive, and effective method increases the synthetic utility of olefins via improvement of overall product yield and purity.
References
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Journal ArticleDOI
Asymmetric Catalysis by Architectural and Functional Molecular Engineering: Practical Chemo‐ and Stereoselective Hydrogenation of Ketones
Ryoji Noyori,Takeshi Ohkuma +1 more
TL;DR: The newly devised [RuCl(2)(phosphane)(2)(1,2-diamine)] complexes are excellent precatalysts for homogeneous hydrogenation of simple ketones which lack any functionality capable of interacting with the metal center.
Journal ArticleDOI
Green, catalytic oxidation of alcohols in water
TL;DR: A water-soluble palladium(II) bathophenanthroline complex is a stable recyclable catalyst for the selective aerobic oxidation of a wide range of alcohols to aldehydes, ketones, and carboxylic acids in a biphasic water-alcohol system.
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Ruthenium-Catalyzed Reactions for Organic Synthesis.
Journal ArticleDOI
Efficient and Selective Aerobic Oxidation of Alcohols into Aldehydes and Ketones Using Ruthenium/TEMPO as the Catalytic System
Arné Dijksman,Arturo Marino-González,Antoni Mairata i Payeras,and Isabel W. C. E. Arends,Roger A. Sheldon +4 more
TL;DR: The combination of RuCl2(PPh3)3 and TEMPO affords an efficient catalytic system for the aerobic oxidation of a variety of primary and secondary alcohols, giving the corresponding aldehydes and ketones, in >99% selectivity in all cases.