Ruthenium catalysts

301224-40-8, Name is (1,3-Dimesitylimidazolidin-2-ylidene)(2-isopropoxybenzylidene)ruthenium(VI) chloride, molecular formula is C31H38Cl2N2ORu, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 301224-40-8, Product Details of 301224-40-8

Enol ethers as substrates for efficient Z-and enantioselective ring-opening/cross-metathesis reactions promoted by stereogenic-at-Mo complexes: Utility in chemical synthesis and mechanistic attributes

The first examples of catalytic enantioselective ring-opening/cross- metathesis (EROCM) reactions that involve enol ethers are reported. Specifically, we demonstrate that catalytic EROCM of several oxa-and azabicycles, cyclobutenes and a cyclopropene with an alkyl-or aryl-substituted enol ether proceed readily in the presence of a stereogenic-at-Mo monopyrrolide-monoaryloxide. In some instances, as little as 0.15 mol % of the catalytically active alkylidene is sufficient to promote complete conversion within 10 min. The desired products are formed in up to 90% yield and >99:1 enantiomeric ratio (er) with the disubstituted enol ether generated in >90% Z selectivity. The enol ether of the enantiomerically enriched products can be easily differentiated from the terminal alkene through a number of functionalization procedures that lead to the formation of useful intermediates for chemical synthesis (e.g., efficient acid hydrolysis to afford the enantiomerically enriched carboxaldehyde). In certain cases, enantioselectivity is strongly dependent on enol ether concentration: larger equivalents of the cross partner leads to the formation of products of high enantiomeric purity (versus near racemic products with one equivalent). The length of reaction time can be critical to product enantiomeric purity; high enantioselectivity in reactions that proceed to >98% conversion in as brief a reaction time as 30 s can be nearly entirely eroded within 30 min. Mechanistic rationale that accounts for the above characteristics of the catalytic process is provided.

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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.10049-08-8, Name is Ruthenium(III) chloride, molecular formula is Cl3Ru. In a Article£¬once mentioned of 10049-08-8, HPLC of Formula: Cl3Ru

Synthesis of ruthenium tris(2,2?-dipyridyl) complexes containing ethynyl substituents

A method was developed for the synthesis of Ru2+ tris(2,2?-dipyridyl) complexes where one of the ligands contains substituents with triple bonds conjugated with the dipyridyl system.

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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru. In a Article£¬once mentioned of 32993-05-8, Application In Synthesis of Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)

H-C Bond Cleavage by (nu5-Cyclopentadienyl)bis(triorganylphosphine)ruthenium Organyl Complexes

Ruthenium(II) complexes of the type Cp(MenPh3-nP)2RuR with R = CH3, and R = CH2CMe3 have been prepared from the appropriate ruthenium chloride and alkyllithium or alkylmagnesium chloride.Of the methyl complexes having at least one phenyl group in the phosphane ligand, 17 reacts at 20 deg C and 14, 19, and 21 upon warming by intramolecular H-C(phenyl) bond cleavage and elimination of methane to give the ortho-metallated products Cp(MenPh3-nP) 15, 18, 20, and 22.The neopentyl ruthenium complexes 23, 25, 32, 34, and 36 react in an intermolecular manner with benzene by H-C(benzene) bond cleavage and elimination of neopentane to give the phenylruthenium compounds 24, 26, 33, 35, and 37.Whereas the Me3P-complex 36 as well as (C5H5)(Me3P)(Ph3P)RuCH2CMe3 (30) react with benzene to give neopentane and the phenyl complexes 37 and 31, the complexes 23, 25, 32, and 34 react to give undeuterated neopentane and the phenyl compounds 24, 26, 33, and 35.The phenyl complex 24 and the ruthenium compounds having benzyl (34) or p-tolyl groups (40) react with toluene to give an equilibrium mixture of the m- and p-tolyl complexes 38 and 40.H-C(arene) bond cleavage is also observed with other aromatic compounds such as phenyl bromide or naphthalene.In the case of 36 bond cleavage occurs selectively in the position meta to the substituent to give 42 and 43.Styrene, in contrast, reacts with 36 with cleavage of the vinylic 1(E)-H-C bond to give 44, while ethylene reacts to give the (nu2-ethylene)-vinylruthenium complex 45, which upon warming isomerizes with ethylene insertion into the vinyl-Ru bond to give the nu3-1-methylallyl compound 46. – In the H-C bond cleavage reaction, (C5Me5)Ru complexes are more reactive than the corresponding systems with a C5H5 group, and in both series the reactivity decreases with increasing basicity of the phosphine ligand. – The crystal structure analysis of Cp(Ph3P)(Me3P)RuCH2CMe=CH2 (13) is described.

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

246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, molecular formula is C46H65Cl2N2PRu, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 246047-72-3, Recommanded Product: 246047-72-3

Copper catalyzed asymmetric synthesis of chiral allylic esters

The complex derived from Taniaphos ligand 4 and CuBr?Me2S catalyzes the asymmetric addition of Grignard reagents to 3-bromopropenyl esters 1 to provide allylic esters 2 in high yields and high chemio-, regio-, and enantioselectivities. The work demonstrates that allylic asymmetric alkylation (AAA) can be done on substrates bearing a heteroatom at the gamma-position. The method is a practical route to chiral, nonracemic allylic alcohols. The use of functionalized substrates 1 or Grignard reagents leads to more complex products 2, which can be further manipulated as demonstrated in conversion to (S)-5-ethyl-2(5H)-furanone 6 and (S)-benzoic acid-cyclopent-2-enyl ester 7. Copyright

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

Electric Literature of 37366-09-9, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a patent, introducing its new discovery.

Homo- and Hetero-binuclear Complexes containing the Anion 2(pyrazolate)>- as Ligand. Crystal Structure of <(C5Me5)Rh2(mu-C3H3N2)Ru(C6H6)>ClO4*CH2Cl2

The neutral rhodium(III) complex > reacts with pyrazole-type ligands in the presence of AgClO4 yielding cationic complexes of the general formula (HL)>ClO4.They react with Na2CO3 in aqueous solutions with formation of the neutral complexes 2(HL)>.Addition of NaH in tetrahydrofuran to the cationic complexes or thallium acetylacetonate in MeOH to the neutral compounds affords the corresponding bimetallic derivatives <(C5Me5)Rh2LM> (M = Na or Tl).These complexes react with halide compounds such as <2> , , <(PtMe3I)4> or <2> (cod = cycloocta-1,5-diene) to give cationic or neutral complexes of the type <(C5Me5)Rh2(mu-L)M(ring)>ClO4 or <(C5Me5)Rh2(mu-L)MLn> .The crystal structure of <(C5Me5)Rh2(mu-pz)Ru(C6H6)>ClO4*CH2Cl2 has been determined by X-ray diffraction methods: monoclinic, space group P21/c, a = 11.179(1), b = 17.039(1), c = 18.186(2) Angstroem, beta = 94.85(1) deg and Z = 4.The complex cation consists of one rhodium and one ruthenium atom bridged by two phosphonate and one pyrazolate anion.An eta5-C5Me5 and an eta6-C6Me6 group complete the co-ordination spheres of the metals, which show no direkt intermetallic interaction.

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

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. 32993-05-8, C41H35ClP2Ru. A document type is Article, introducing its new discovery., Product Details of 32993-05-8

Helices of ruthenium complexes involving pyridyl-azine ligands: Synthesis, spectral and structural aspects

New cationic complexes [Ru(eta5-C5H5 (EPh3)(L)]BF4 [L = pyridine-2-carbaldehyde azine (paa); E = P, 1; E = As, 2; E = Sb, 3] and kappa1 bonded dppm complexes [Ru(eta5-C5H5 (kappa1-dppm)(L)]BF4 [L = paa 4; L = p-phenylene-bis(picoline)aldimine (pbp) 5] containing both group V donor and pyridyl-azine ligand are reported. The complexes were fully characterized by analytical and spectral studies. 31P NMR spectral studies suggested coordination of dppm in the complexes 4 and 5 in kappa1-manner, which was further, confirmed by structural studies on the representative complex 4. Weak interaction studies revealed that inter- and intramolecular C-H?X (X = O, F, Cl, pi) and pi-pi interactions in the complexes 1 and 4 lead to helical structures.

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

Synthetic Route of 92361-49-4, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 92361-49-4, C46H45ClP2Ru. A document type is Review, introducing its new discovery.

Reaction of Cp*RuCl(PPh3)2 with dioxygen and formation of a neutral complex Cp*RuCl(O2)(PPh3)

Reaction of Cp*RuCl(PPh3)2 (1) with atmospheric oxygen occurs at room temperature in the presence of acetone or methylene chloride leading to Cp*RuCl(O2)(PPh3) (2). This complex is remarkably stable in the solid state and it can also release, under not unduly harsh conditions, the activated oxygen molecule, which can oxidize the phosphite L = MeOP[ (OCHMe)2CH2] to the corresponding phosphate, along with formation of the mono- and disubstituted Cp*RuCl (PPh3)(L) (5), Cp*RuCl(L)2 (6) and [Cp*RuCl(PPh3)(L)2]Cl (7), complexes. Structural information of phosphite derivatives 5 and 6 has been obtained by X-ray diffraction.

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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. 10049-08-8, Name is Ruthenium(III) chloride, molecular formula is Cl3Ru. In a Article£¬once mentioned of 10049-08-8, Formula: Cl3Ru

Ruthenium(II) Charge-Transfer Sensitizers Containing 4,4?-Dicarboxy-2,2?-bipyridine. Synthesis, Properties, and Bonding Mode of Coordinated Thio- and Selenocyanates

The synthesis and properties of several complexes of Ru(II) containing 4,4?-dicarboxy-2,2?-bipyridine (dcbpyH2), 2,6-bis(1-methylbenzimidazol-2-yl)pyridine (bmipy), or 2,6-bis(1-methylbenzimidazol-2-yl)-4-phenylpyridine (phbmipy), and monodentate ligands (X- = Cl-, I-, NCS-, NCSe-, CN-) are reported. The introduction of the ambident ligands X- = NCS-, NCSe-, and CN- into the coordination sphere of [Ru(bmipy)(dcbpy)I]- and cis-Ru(dcbpyH2)2Cl2 has been studied in situ via 1H and 13C NMR spectroscopy using 13C-enriched ligands X-. Introduction of thiocyanate and selenocyanate initially yields the two possible linkage isomers in comparable amounts; prolonged reaction time converts the S-bound isomer and the Se-bound isomer to the N-bound isomers. The isoselenocyanate complex decomposes rapidly, yielding the cyano complex under loss of Se. The N-bound isothiocyanato complex K[Ru(bmipy)(dcbpy)(NCS)] was found to be an efficient sensitizer for nanocrystalline TiO2; the incident monochromatic photon-to-current efficiency (IPCE) is nearly quantitative at 520 nm. Introduction of a phenyl group in the 4-position of the 2,6-bis(1-methylbenzimidazol-2-yl)pyridine ligand gives a red-shifted absorption maximum for the corresponding phenylated K[Ru(ph-bmipy)(dcbpy)(NCS)] complex with an increased molar absorption coefficient for the MLCT maximum at 508 nm. At longer wavelengths above 620 nm, phenyl substitution does not enhance the absorption coefficients of the complex. Compared to that of K[Ru(bmipy)(dcbpy)(NCS)], the performance of the phenylated complex is reduced in a solar cell due to lower IPCE values. The visible spectra of the halide complexes K[Ru(bmipy)(dcbpy)X] (X- = Cl-, I-) show enhanced red response, but the complexes exhibit strongly reduced overall IPCE values. A comparison of the complexes to cis-Ru(dcbpyH2)2(NCS)2 is presented. Possible strategies for the design of more efficient sensitizers are discussed.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Formula: Cl3Ru. In my other articles, you can also check out more blogs about 10049-08-8

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

Electric Literature of 20759-14-2, An article , which mentions 20759-14-2, molecular formula is Cl3H2ORu. The compound – Ruthenium(III) chloride hydrate played an important role in people’s production and life.

Synthesis and characterization of the transition metal complexes: Their alcohol oxidation and electrochemical properties

Five Schiff base ligands, HA1, HA2, H 2L1-H2L3, and their Co(II), Mn(III) and Ru(III) complexes, have been synthesized and characterized by analytical, spectroscopic, conductance, magnetic moment, and electrochemical studies. The oxidation of benzylic alcohols to the corresponding carbonyl compounds is described. In the case of some primary benzyl alcohols, high conversions were obtained. Secondary benzyl alcohol (2-hydroxy-1,2-diphenylethanone derivatives) were selectively transformed to the corresponding ketone with satisfactory conversions. The electrochemical properties of all complexes have been recorded in the different scan rates and solvents. The electrochemical properties of the complexes change with scan rates. Taylor & Francis Group, LLC.

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

246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, molecular formula is C46H65Cl2N2PRu, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 246047-72-3, SDS of cas: 246047-72-3

Systematic synthesis of phthalimide-protected unsaturated hydrazine heterocycles

A four-step route for the synthesis of novel phthalimide-protected hydrazine heterocycles that include a C?C double bond in the cycle was developed. Phthalimide-protected Boc-hydrazine was used as a starting material, which was alkylated with bromoalkenes in mild conditions. Further steps involved Boc-deprotection and second alkylation with bromoalkenes. Finally, the heterocycles were produced by ring-closing metathesis. This route allows access to these versatile building blocks without using electrophilic amination or nitrosylation, therefore, significantly reducing environmental and safety concerns. Phthalimide-protected heterocycles can be derivatized further by modifying the carbon?carbon double bond and by deprotection and subsequent functionalization of the primary amino group. During the current research, various five- to seven-membered hydrazine heterocycles and numerous novel intermediate compounds were synthesized and thoroughly characterized.

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