Category: ruthenium-catalysts

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 114615-82-6, Name is Tetrapropylammonium perruthenate, category: ruthenium-catalysts.

Synthesis and CYP24A1-Dependent Metabolism of 23-Fluorinated Vitamin D3 Analogues

Two novel 23-fluorinated 25-hydroxyvitamin D3 analogues were synthesized using Inhoffen-Lythgoe diol as a precursor of the CD-ring, efficiently. Introduction of the C23 fluoro group was achieved by the deoxy-fluorination reaction using N,N-diethylaminosulfur trifluoride or 2-pyridinesulfonyl fluoride (PyFluor). Kinetic studies on the CYP24A1-dependent metabolism of these two analogues revealed that (23S)-23-fluoro-25-hydroxyvitamin D3 was more resistant to CYP24A1-dependent metabolism than its 23R isomer.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.category: ruthenium-catalysts. In my other articles, you can also check out more blogs about 114615-82-6

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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.15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a Article£¬once mentioned of 15746-57-3, Recommanded Product: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

A ruthenium(II) allenylidene complex with a 4,5-diazafluorene functional group: A new building-block for organometallic molecular assemblies

The synthesis of the new ruthenium(II) allenylidene complex [ClRu(dppe)2{double bond, long}C{double bond, long}C{double bond, long}C11H6N2][OTf] (4) (dppe = 1,2-bis(diphenylphosphino)ethane) terminated with a 4,5-diazafluorene ligand is reported. Further coordination of that metal allenylidene to ruthenium and rhenium moieties leads to the bimetallic adducts [ClRu(dppe)2{double bond, long}C{double bond, long}C{double bond, long}C11H6N2{Ru(bpy)2}][B(C6F5)4]3 (5a), [ClRu(dppe)2{double bond, long}C{double bond, long}C{double bond, long}C11H6N2{Ru(tBu-bpy)2}][PF6]3 (5b) and [ClRu(dppe)2{double bond, long}C{double bond, long}C{double bond, long}C11H6N2{Re(CO)3Cl}][OTf] (6). Their optical and electrochemical properties show that the allenylidene moiety is an attractive molecular clip for the access to larger original redox-active homo/heteronuclear multi-component supramolecular assemblies. The X-ray crystal structure of the allenylidene metal building block is also described.

The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 15746-57-3 is helpful to your research., Recommanded Product: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

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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.Quality Control of: (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium

Tandem enyne metathesis and Claisen rearrangement: A versatile approach to conjugated dienes of variable substitution patterns

To extend the versatility of the ruthenium carbene-promoted enyne metathesis, it was combined with an Ireland ester enolate Claisen rearrangement. This reaction sequence provided conjugated dienes of higher substitution pattern than that obtained through a cross-enyne metathesis alone. The Ireland-Claisen was conducted across both acyclic and cyclic dienes produced from cross-metathesis and methylene-free enyne metathesis, respectively. In the case of cyclodienes, the Ireland-Claisen rearrangement produced s-trans locked dienes which underwent mode-selective ene reaction. The tandem, sequential use of the Ireland-Claisen rearrangement also proved suitable for chirality transfer originating from chiral propargylic alcohols. Last, the tandem metathesis/Ireland-Claisen was utilized to access 4-substituted-3,5- cyclohexadiene diol derivatives, which are valuable chiral intermediates for natural product synthesis. The combination of this pericyclic reaction with a catalytic metathesis reaction extends the versatility of cross-metathesis since additional diene motifs can be accessed.

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

Related Products of 32993-05-8, An article , which mentions 32993-05-8, molecular formula is C41H35ClP2Ru. The compound – Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II) played an important role in people’s production and life.

Ruthenium complexes of hexakis(cyanophenyl)[3]radialenes and their di(cyanophenyl)methane precursors: Synthesis, photophysical, and electrochemical properties

The coordination chemistry of cross-conjugated ligands and the effect of cross-conjugation on the nature of metal-metal and metal-ligand interactions have received limited attention. To explore the effects of cross-conjugation eight ruthenium complexes were synthesized, mononuclear complexes of two isomeric cross-conjugated [3]radialenes [RuCp(PPh3) 2(L)]PF6 and [{RuCp*(dppe)}(L)]PF6 (L = hexakis(4-cyanophenyl)[3]radialene, 2; hexakis(3-cyanophenyl)[3]radialene, 3), and dinuclear complexes [{RuCp(PPh3)2}2(L)] (PF6)2 and [{RuCp*(dppe)}2(L)](PF 6)2 of the diarylmethane precursors (L = 4,4?-dicyanodiphenylmethane, 4; 3,3?-dicyanodiphenylmethane, 5) to the [3]radialenes. Considerable synthetic challenges allowed only clean isolation of mononuclear complexes of the multidentate radialenes 2 and 3. As expected, coordinating a positively charged metal induces a red shift for the pi-pi* transition in complexes of ligand 2, but unexpectedly a blue shift for the same transition in complexes of 3 was observed. This points to conformational differences for the [3]radialene in the ruthenium complexes of the para-(2) versus meta-(3) substituted hexaaryl[3]radialenes. Cyclic voltammetry indicates that the methylene spacer in 4 and 5 does not enable any interaction between metal centers and the absorption behavior is essentially as observed for [Ru(NCPh)(PPh3)2Cp]PF6 and [Ru(NCPh)(dppe)Cp*]PF6 but generally with a slight red shift in absorbance maxima.

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

Reference of 32993-05-8, 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.

Pentakis(methoxycarbonyl)cyclopentadiene Chemistry. Part 7. Preparation and Characterisation of Some Ruthenium Complexes: Crystal and Molecular Structure of eta-Cyclopentadienylruthenium, >

The salt Tl reacts with in acetonitrile to give the complex ; in air the reaction affords >.The crystal structure of the latter has been determined by single-crystal X-ray diffraction methods at 295 K, being refined to a residual of 0.026 for 6 438 ‘observed’ reflections.Crystals are triclinic, space group P1, with a=15.790(5), b=8.968(4), c=7.947(3) Angstroem, alpha=67.52(3), beta=89.52(3), gamma=80.90(3) deg, and Z=2.Both ligands have an eta5 relationship to the ruthenium in what is essentially an eclipsed sandwich compound.For the C5H5 ring, Ru-C is 2.178(2)-2.186(3) Angstroem, while for the C5(CO2Me)5 ligand, Ru-C is 2.157(2)-2.178(2) Angstroem; although these distances are uncorrected for libration, their relativity seems valid.The C5(CO2Me)5 ligand is displaced in reactions with tertiary phosphines in nitrile solvents, and this reaction forms the basis of a process for the oxidation of PPh3 catalysed by the metallocene.The protonation of by HC5(CO2Me)5 is also described.

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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. 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a Article£¬once mentioned of 37366-09-9, Product Details of 37366-09-9

Half sandwich complexes of chalcogenated pyridine based bi-(N, S/Se) and terdentate (N, S/Se, N) ligands with (eta6-benzene)ruthenium(ii): Synthesis, structure and catalysis of transfer hydrogenation of ketones and oxidation of alcohols

The half sandwich complexes [(eta6-C6H 6)Ru(L)Cl][PF6] (1-5) have been synthesized by the reactions of (2-arylchalcogenomethyl)pyridine [L = L1-L3] and bis(2-pyridylmethyl)chalcogenide [L = L4-L5] (chalcogen = S, Se; Ar = Ph/2-pyridyl for S, Ph for Se) with [(eta6-C6H 6)RuCl2]2, at room temperature followed by treatment with NH4PF6. Their HR-MS, 1H, 13C{1H} and 77Se{1H} NMR spectra have been found characteristic. The single crystal structures of 1-5 have been established by X-ray crystallography. The Ru has pseudo-octahedral half sandwich “piano-stool” geometry. The complexes 1-5 have been found efficient for catalytic oxidation of alcohols with N-methylmorpholine-N-oxide (NMO) and transfer hydrogenation of ketones with 2-propanol (at moderate temperature 80 C) as TON values are up to 9.9 ¡Á 103 and 9.8 ¡Á 103 respectively for the two catalytic reactions. On comparing the required catalyst loading for good conversions and reaction time for the present complexes with those reported in literature for other transfer hydrogenation/oxidation catalysts, it becomes apparent that 1-5 have good promise. The complexes of Se ligands have been found more efficient than their sulphur analogues. The complexes of bidentate ligands are more efficient than those of terdentate, due to difficult bond cleavage in the case of latter. These orders of efficiency are supported by DFT calculations. The calculated bond lengths/angles by DFT are generally consistent with the experimental ones.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Product Details of 37366-09-9. In my other articles, you can also check out more blogs about 37366-09-9

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

Application of 37366-09-9, An article , which mentions 37366-09-9, molecular formula is C12H12Cl4Ru2. The compound – Dichloro(benzene)ruthenium(II) dimer played an important role in people’s production and life.

Facile synthesis of heterobimetallic [FeII(mu-diphosphine)RuII] and homobimetallic [FeII(mu-diphosphine)FeII] complexes and their in vitro cytotoxic activity on cisplatin-resistant cancer cells

A series of heterobimetallic [Fe,Ru] and homobimetallic [Fe,Fe] complexes, featuring mu -diphosphine bridges between the two metal centres, are reported along with their in vitro cytotoxicity activity on the A2780cisR cell-line. The known starting material [CpFe(CO)2(CH3)] (Cp = eta5-C5H5) (1) was reacted with dppe (1,2-bis(diphenylphosphino)ethane) forming the known mononuclear kappa1-dppe complex: [CpFe(CO)(COCH3)(kappa1-dppe)] (2) and the known dinuclear complex: and [[CpFe(CO)(COCH3)]2(mu-dppe)] (3). Dimer cleavage reactions between complex 2 and two ruthenium arene complexes [(eta6-p-cymene)RuCl2]2 and [(eta6-benzene)RuCl2]2 formed two new heterobimetallic complexes: [CpFe(CO)(COCH3)(mu-dppe)Ru(eta6-cymene)Cl2] (4) and [CpFe(CO)(COCH3)(mu-dppe)Ru(eta6-C6H6)Cl2] (5). A homobimetallic system, [[CpFe(CO)(I)]2(mu-dppb)] (6) was obtained by the facile reaction between of [CpFe(CO)2I] and 1,4-bis(diphenylphosphino)butane (dppb). Complex 6 was methylated using MeLi to generate the more lipophilic complex [[CpFe(CO)(CH3)]2(mu-dppb)] (7). All of the complexes were fully characterized by spectroscopy (1H, 13C {1H}, 31P {1H} NMR; FTIR, UV?Vis), and high resolution mass spectrometry (HRMS). Density functional theory calculations (DFT) (Level of theory B3LYP, basis set for H, C, P, O, Cl is 6-31+G(d,p) and for Ru, Fe, I is DGDZVP) on complexes 5 and 6 are also reported. An excellent agreement between the DFT calculated infra-red (IR) spectra of the optimised geometries of 5 and 6 was found with the experimentally determined spectra. In vitro cytotoxicity studies of all complexes was carried out on A2780cisR (cisplatin resistant ovarian cancer cell-line) and compared to cisplatin as a positive control and RAPTA-C as a negative control. Although limited to only one cell-line, the results show that the heterobimetallic complexes 4 and 5 are the most cytotoxic (IC50 = 4.9 ¡À 0.4 muM and 6.5 ¡À 0.1 muM respectively), whilst the dinculear [Fe,Fe] complexes exhibit no, or very low cytotoxicity.

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

32993-05-8, Name is Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II), molecular formula is C41H35ClP2Ru, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 32993-05-8, Quality Control of: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II)

Syntheses and characterization of nickel(II) and ruthenium(II) complexes with the novel phosphine ligands 1-((diphenylphosphino)methyl)-1-phenyl-1-silacyclopent-3-ene and 1,1-bis((diphenylphosphino)methyl)-1-silacyclopent-3-ene. Crystal structure of CpRuCl[(PPh2CH2)2(SiC4H 6)]

The reaction of the lithium salt of chlorodiphenylphosphine with 1-chloro-1-phenylsila-cyclopent-3-ene (1) and 1,1-dichlorosilacyclopent-3-ene (2) gave good yields of 1-((diphenylphosphino)methyl)-1-phenyl-1-silacyclopent-3-ene (L) (3) and 1,1-bis((diphenylphosphino)-methyl)-1-silacyclopent-3-ene (L?) (4). Both molecules were obtained as white solids characterized by NMR. Red and red-violet diamagnetic square-planar complexes trans-NiCl2L2 and cis-NiC2L? were obtained by reacting NiCl2¡¤6H2O with 3 and 4, respectively. Substitution of two PPh3 in CpRuCl(PPh3)2 by 4 gave CpRuCl(L?) (7) in good yield. Orange crystals of 7 contain monomeric pseudooctahedral ruthenium(II) centers surrounded by a Cl atom, a Cp ligand, and the two phosphorus atoms of the 1,1-bis((diphenylphosphino)methyl)-1-silacyclopent-3-ene ligand. The silacyclopentene ring adopts a puckered ground state configuration with a puckering angle of 10. 7 can be described as a spirannic compound with roughly perpendicular Ru-P(1)-C(10)-Si-C(20)-P(2) and Si-C(6)-C(7)-C(8)-C(9) rings.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Quality Control of: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II). In my other articles, you can also check out more blogs about 32993-05-8

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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 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II),molecular formula is C20H16Cl2N4Ru, is a conventional compound. this article was the specific content is as follows.SDS of cas: 15746-57-3

A novel […] complex and its preparation method and application (by machine translation)

The invention discloses a novel […] complex and its preparation method and application, the composition is formed by multi-bipyridine ligand, metal center and containing donor functional group of auxiliary ligand, the complex in the donor group to the electronic capacity is strong, oxidation potential is low, is strong, lose the electronic capacity; for electronic ring metallized C ^ N ligand dp (Ru) improve the track level, electronic transfer capacity is improved substantially, the invention synthetic ruthenium biological toxicity is low, can be used for the hypoxic environment of the I-type photodynamic therapy, photodynamic therapy effect is improved, the optical power in the treatment of important application prospect; and this kind of compound the synthetic method is simple, mild synthetic conditions, and is suitable for mass production and use. (by machine translation)

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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. 203714-71-0, C28H45Cl2OPRu. A document type is Patent, introducing its new discovery., SDS of cas: 203714-71-0

THERMAL METHODS FOR TREATING A METATHESIS FEEDSTOCK

Various methods are provided for metathesizing a feedstock. In one aspect, a method includes providing a feedstock comprising a natural oil, heating the feedstock to a temperature greater than 100C in the absence of oxygen, holding the feedstock at the temperature for a time sufficient to diminish catalyst poisons in the feedstock, and, following the heating and holding, combining a metathesis catalyst with the feedstock under conditions sufficient to metathesize the feedstock.

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