Category: ruthenium-catalysts

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Ring-Opening Metathesis/Oxy-Cope Rearrangement: A New Strategy for the Synthesis of Bicyclic Medium Ring-Containing Compounds

Ring-opening/ring-closing metathesis on cyclobutene-containing substrates with angular oxygen functionality provides a stereospecific introduction of 1,5-bis-dienes required for an anion-accelerated oxy-Cope rearrangement. The reaction sequence offers generally a stereocontrolled preparation of a variety of medium ring-containing bicyclic ring systems, while rearrangement to the bicyclo[7,3,0]dodecane (9-5) system leads to a mixture of olefin isomers.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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Total synthesis of (+)-chloriolide

The first total synthesis of (+)-chloriolide, a 12-membered macrolide from Chloridium virescens (var. chlamydosporum), was accomplished in a longest linear sequence of 20 steps from commercial materials in 7% overall yield. The Royal Society of Chemistry.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 14564-35-3, Name is Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II), molecular formula is C38H34Cl2O2P2Ru. In a Article£¬once mentioned of 14564-35-3, name: Dichlorodicarbonylbis(triphenylphosphine)ruthenium(II)

Substituted ketene elimination from acid chlorides induced by ruthenium(0) compounds

The compound Ru(CO)2(triphos) (triphos=MeC(CH2PPh2)3) reacts with a number of acid chlorides RR’CHCOCl to form Cl and the corresponding substituted ketenes RR’CCO.A quantitative study of the reaction of Ph2CHCOCl shows that Ph2CCO is formed in a 1:1 stoichiometry.The compound Ru(CO)3(PPh3)2 also reacts with Ph2CHCOCl forming Ph2CCO and the unstable hydride Cl, the chemistry of which is also reported.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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METHOD FOR PRODUCING OLEFIN

A method for producing at least one olefin compound selected from the group consisting of a compound of formula (51), a compound of formula (52), a compound of formula (53), and a compound of formula (54), the method including reacting an olefin compound of formula (21) with a olefin compound of formula (31) in the presence of at least one metal catalyst selected from the group consisting of a compound of formula (11), a compound of formula (12), a compound of formula (13), a compound of formula (14), and a compound of formula (15).

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Electric Literature of 32993-05-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article£¬once mentioned of 32993-05-8

Platinum and ruthenium complexes of new long-tail derivatives of PTA (1,3,5-triaza-7-phosphaadamantane): Synthesis, characterization and antiproliferative activity on human tumoral cell lines

The alkylation of PTA, (1,3,5-triaza-7-phosphaadamantane), with long chain alkyl iodides produced the novel ionic derivatives (PTAC12H 25)I, (PTAC16H33)I and (PTAC18H 37)I. Anion exchange gave the PF6- analogs (PTAC12H25)PF6, (PTAC16H 33)PF6 and (PTAC18H37)PF 6. The new phosphines were characterized by ESI-MS, elemental analysis, 1H, 13C, and 31P NMR spectroscopy and their coordination ability was investigated towards Pt(II) and Ru(II) cores. Complexes cis-[PtCl2(PTAR)](PF6)2 (1-3) and [CpRuCl(PPh3)(PTAR)]I (5-7) have been isolated and characterized. Antiproliferative activity, given as estimated IC50, was tested for each complex against appropriate human tumoral lines (T2, SKOV3 and SW480) in comparison with cisplatin, with the parent complexes [CpRuCl(PPh 3)(PTA)] and [CpRuCl(PPh3)(PTAMe)]I and with the free ligands.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

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N-Heterocyclic carbene-based ruthenium-hydride catalysts for the synthesis of unsymmetrically functionalized double-decker silsesquioxanes

Ruthenium-N-heterocyclic carbene complexes with the generic formula [RuHCl(CO)(NHC)(PCy3)] exhibit a high catalytic activity toward the (E)-selective silylative coupling of divinyl-substituted double-decker silsesquioxanes with two distinctly substituted styrenes. This process leads to a novel class of unsymmetrically functionalized silsesquioxane derivatives.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Computed Properties of C46H65Cl2N2PRu. In my other articles, you can also check out more blogs about 246047-72-3

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 10049-08-8, Name is Ruthenium(III) chloride, name: Ruthenium(III) chloride.

Kinetic and mechanistic study of ruthenium(III) catalysed and uncatalysed oxidation of oxalic acid by acid bromate

Acid bromate-oxalic acid reaction in the presence of mercury(II)-a bromide ion scavenger, is slow and exhibits first order each in , and .The proposed mechanism assumes a slow rate determining formation of an oxalyl-bromate ester, followed by the fast decomposition to products.The same reaction in the presence of Ru(III) is accelerated and exhibits fractional order each in , and and first order in .The proposed mechanism for catalysed reaction assumes a complex formation between oxalic acid and Ru(III), which subsequently undergoes decarboxylation after interacting with bromate.The mechanisms, for over all, catalysed and uncatalysed reactions are critically examined and values of rate constants of each reaction are evaluated.Activation parameters for all the reactions are also evaluated and discussed.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Application of 10049-08-8. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 10049-08-8, Name is Ruthenium(III) chloride

Displacement reaction in pulse current deposition of PtRu for methanol electro-oxidation

Galvanostatic depositions in rectangular pulses and nitrosol precursors were employed to prepare PtRu nanoparticles on carbon clothes in various sizes and compositions. Variables including current on-time (Ton), current off-time (Toff), and current density were explored to identify the optimized catalytic performances for methanol electro-oxidation. Electrochemical characterizations including cyclic voltammetry and hydrogen desorption were carried out. Images from a transmission electron microscope on the PtRu nanoparticles revealed a moderate size distribution. Signals from X-ray patterns indicated a slight shift of diffraction peaks, suggesting that the Ru was alloyed successfully in the Pt lattice. In addition, the amount of alloyed Ru was found to decrease with reduced duty cycles. Composition determinations from inductively coupled plasma mass spectrometry and analysis on the oxidation states from X-ray photoelectron spectroscopy suggested a displacement reaction in which the Ru was alternately deposited and dissolved during Ton and Toff, while the Pt was deposited continuously. As a result, we observed substantial enrichment of Pt in the PtRu nanoparticles when the duty cycle was shortened.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, molecular formula is C46H65Cl2N2PRu. In a Article£¬once mentioned of 246047-72-3, HPLC of Formula: C46H65Cl2N2PRu

Highly Selective Ring Expansion of Bicyclo[3.1.0]hexenes

A Ru-carbene-promoted ring expansion of bicyclo[3.1.0]hexenes with terminal alkynes is reported. The reaction delivers seven-membered carbocycles starting from readily available starting materials and was found to be highly regioselective. The resulting seven-membered ring products contain both conjugated diene and cyclopropane substructures that could be selectively reacted in subsequent transformations.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.HPLC of Formula: C46H65Cl2N2PRu, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 246047-72-3, in my other articles.

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

In an article, published in an article, once mentioned the application of 246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium,molecular formula is C46H65Cl2N2PRu, is a conventional compound. this article was the specific content is as follows.Recommanded Product: (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium

Preparation of alkenyl cyclopropanes through a ruthenium-catalyzed tandem enyne metathesis-cyclopropanation sequence

Acyclic enynes undergo a tandem enyne metathesis/cyclopropanation sequence in the presence of Grubbs’ 1st generation metathesis catalyst and diazo compounds. In practice, the acyclic substrates in the presence of the ruthenium alkylidene first undergo a ring-closing enyne metathesis to generate cyclic 1,3-dienes; then upon addition of a diazo compound, these products are cyclopropanated selectively at the more accessible olefin. Overall, the reaction sequence converts acyclic enynes into vinyl cyclopropanes in single operation through two unique ruthenium-catalyzed transformations. Copyright

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI