Category: 20759-14-2

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. 20759-14-2, Cl3H2ORu. A document type is Article, introducing its new discovery., category: ruthenium-catalysts

Synthesis of an ionic paramagnetic ruthenium(III) complex and its application as an efficient and recyclable catalyst for the transfer hydrogenation of ketones

A novel ionic complex, bis[1-butyl-2-(diphenylphosphanyl)-3- methylimidazolium]tetrachloridoruthenium(III) hexafluorophosphate (2), has been synthesized and fully characterized. The single-crystal X-ray diffraction analysis showed that 2 is composed of an Ru complex cation and PF 6- anion. The cation has a highly symmetrical Ru-centered octahedron geometry with four Cl atoms in the equatorial plane and two imidazolium-substituted phosphane ligands in the axial positions. It exhibits paramagnetism due to the presence of one unpaired electron in the phosphane-ligated low-spin RuIII complex. Complex 2 exhibited good catalytic performance in the transfer hydrogenation of a wide range of ketones by using alcohols as hydrogen donors. Owing to its high polarity, good thermal stability, and insensitivity to moisture and oxygen, complex 2 could be used in six catalytic cycles in the transfer hydrogenation of acetophenone without any obvious loss of activity. A novel ionic complex 2 containing an RuIII cation and PF6- anion has been synthesized. The Ru III cation possesses ideal octahedral geometry and exhibits paramagnetism due to the presence of one unpaired electron in the phosphane-ligated low-spin RuIII complex. Complex 2 proves to be an efficient and recyclable catalyst for the transfer hydrogenation of ketones with alcohols as hydrogen donors. Copyright

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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. 20759-14-2, Name is Ruthenium(III) chloride hydrate, molecular formula is Cl3H2ORu. In a Article£¬once mentioned of 20759-14-2, Application In Synthesis of Ruthenium(III) chloride hydrate

Asymmetric transfer hydrogenation of ketones using amino alcohol and monotosylated diamine derivatives of indane

A series of 1,2-amino alcohol and 1,2-monotosylated diamine derivatives of indane have been applied as ligands in the asymmetric ruthenium(II)-catalysed transfer hydrogenation reaction of a series of ketones. Of these, the cis-1-aminoindan-2-ol derivative gives some of the highest asymmetric inductions reported for any amino alcohol ligand in this application.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Application In Synthesis of Ruthenium(III) chloride hydrate, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 20759-14-2, in my other articles.

Reference£º
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. 20759-14-2, Name is Ruthenium(III) chloride hydrate, molecular formula is Cl3H2ORu. In a Article£¬once mentioned of 20759-14-2, Quality Control of: Ruthenium(III) chloride hydrate

Syntheses, characterization, and DFT investigation of new mononuclear acetonitrile- and chloro-ruthenium(II) terpyridine complexes

A series of mononuclear acetonitrile complexes of the type [Ru(CH3CN)(L)(terpy)]2+ {L = phen (1), dpbpy (3), and bpm (5)}, and their reference complexes [RuCl(L)(terpy)]+ {L = phen (2), dpbpy (4), and dpphen (6)} were prepared and characterized by electrospray ionization mass spectrometry, UV-vis spectroscopy, and cyclic voltammograms (CV). Abbreviations of the ligands (Ls) are phen = 1,10-phenanthroline, dpbpy = 4,4?-diphenyl-2,2?-bipyridine, bpm = 2,2?-bipyrimidine, dpphen = 4,7-diphenyl-1,10-phenanthroline, bpy = 2,2?-bipyridine, and terpy = 2,2?:6?,2?-terpyridine. The X-ray structures of the two complexes 2 and 3 were newly obtained. The metal-to-ligand charge transfer (MLCT) bands in the visible region for 1, 3, and 5 in acetonitrile were blue shifted relative to those of the reference complexes [RuCl(L)(terpy)]+. CV for all the [Ru(CH3CN)(L)(terpy)]2+ complexes showed the first oxidation wave at around 0.95 V, being more positive than those of [RuCl(L)(terpy)]+. The time-dependent-density-functional-theory approach (TDDFT) was used to interpret the absorption spectra of 1 and 2. Good agreement between computed and experimental absorption spectra was obtained. The DFT approach also revealed the orbital interactions between Ru(phen)(terpy) and CH3CN or Cl-. It is demonstrated that the HOMO-LUMO energy gap of the acetonitrile ligand is larger than that of the Cl- one.

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

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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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Reference£º
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.20759-14-2, Name is Ruthenium(III) chloride hydrate, molecular formula is Cl3H2ORu. In a Article£¬once mentioned of 20759-14-2, Application In Synthesis of Ruthenium(III) chloride hydrate

Transition metal catalyzed cycloaddition reactions of chiral ketimines with alkenes and carbon monoxide: Reaction conditions, substrate variations and stereoselectivity

The transition metal catalyzed cycloaddition reactions of chiral ketimines with alkenes and CO were investigated. The three component reaction of chiral N,N?-bis(aryl)tetrahydropyrrolo-[2,1-c][1,4]oxazine-3,4 -diylidenediamines with CO and ethylene produced spiro lactams by a formal [2+2+1] cycloaddition reaction. The synthesis worked perfectly in the presence of 0.5 mole % Ru3(CO)12 as the catalyst precursor, and was also catalytic if Fe2(CO)9 was used. The reaction was finished 30 min after the minimum reaction temperature 120C was reached. The pressure of CO and ethylene could be lowered to ? 1 atm. This reaction principle could be extended to substituted alkenes instead of ethylene. Terminal alkenes reacted quantitatively to produce mixtures of regio- and diastereomers. A promising result was the reaction with styrene leading to only one stereoisomer. Acrylic acid methyl ester, internal alkenes and alkynes did not give the desired spiro lactams but ended up either in the degradation of the bicyclic system of the starting compounds, or the observation of cyclodimers and cyclotrimers of the acetylenes, respectively.

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

Application of 20759-14-2, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 20759-14-2, Name is Ruthenium(III) chloride hydrate, molecular formula is Cl3H2ORu. In a Article£¬once mentioned of 20759-14-2

Cyclotrimerization approach to unnatural structural modifications of pancratistatin and other amaryllidaceae constituents – Synthesis and biological evaluation

The phenanthridone core of pancratistatin lacking all aromatic oxygenation was prepared by cyclotrimerization of acetylene-containing scaffolds 30 and 41, reflecting the natural and the C-1 epi configuration, respectively, of the amino inositol moiety. The cobalt-catalyzed formation of the aromatic core led to bisTMS derivatives 39 and 48, as well as bisacetyl derivative 51. The effectiveness of cyclotrimerization of the natural or trans series was compared with that of the cis series. In addition, the yields of cyclotrimerization were compared for propargylic amines and propargylic amides. Eleven derivatives, including the fully hydroxylated phenantridone 39, were tested against seven cancer cell lines. Three of the compounds displayed activities only an order of magnitude less than those of 7-deoxypancratistatin. Full experimental and spectral details are provided for all key compounds and future projections for the preparation of unnatural analogs of Amaryllidaceae constituents are advanced, along with some new insight into the minimum pharmacophore of pancratistatin.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 20759-14-2 is helpful to your research., Application of 20759-14-2

Reference£º
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.20759-14-2, Name is Ruthenium(III) chloride hydrate, molecular formula is Cl3H2ORu. In a Article£¬once mentioned of 20759-14-2, Computed Properties of Cl3H2ORu

Ru-catalyzed anti-Markovnikov addition of amides to alkynes: A regio- and stereoselective synthesis of enamides

(Chemical Equation Presented) The base-free anti-Markovnikov addition of secondary amides, anilides, lactams, ureas, bislactams, and carbamates to terminal alkynes is accomplished, for the first time, by a ruthenium-catalyzed reaction. Two complementary protocols provide stereoselective synthetic entries to either the E or the Z isomers (see scheme; cod = cycloocta-1,5-diene; DMAP = 4-(N,N-dimethylamino)pyridine).

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 20759-14-2 is helpful to your research., Computed Properties of Cl3H2ORu

Reference£º
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 20759-14-2, Name is Ruthenium(III) chloride hydrate,molecular formula is Cl3H2ORu, is a conventional compound. this article was the specific content is as follows.Formula: Cl3H2ORu

Trivalent iron and ruthenium complexes with a redox noninnocent (2-Mercaptophenylimino)-methyl-4,6-di-tert-butylphenolate(2-) Ligand

The 3,5-di-tert-butyl substituted N-(salicylidene)-o-mercaptoaniline (H2L) ligand reacted with equimolar amounts of FeBr2 and 2 equiv of triethylamine in air affords [FeIII(L-L)Br]0 (1), where (L-L)2- is a pentacoordinate ligand formed from the oxidative dimerization of L2- via disulfide bridge formation. Reaction of H2L with RuCl3 ¡¤ H2O and NEt3 gives a dark green-brown dinuclear complex, [Ru III2(L)2Cl2(NCCH3) 2]0 (2). Both complexes have been characterized by X-ray crystallography. A Ru-Ru single bond is evident in 2. Complex 1 has also been characterized by electron paramagnetic resonance and Moessbauer spectroscopies and magnetic susceptibility measurements that identify a high-spin Fe(III) (S = 5/2) center. Diamagnetic 2 is successively twice reversibly one-electron oxidized to produce [Ru III2(L¡¤)(L)Cl2(NCCH 3)2]+, [2]+ (S = 1/ 2), and [RuIII2(L¡¤) 2Cl2(NCCH3)2]2+, [2] 2+ (S = 0). Spectroelec-trochemical and electron paramagnetic resonance measurements identify these as ligand-based oxidations affording o-coordinated phenoxyl radicals. DFT calculations on the electron transfer series corroborate this result and that the Ru-Ru single bond is retained throughout this series.

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

Name is Ruthenium(III) chloride hydrate, as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 20759-14-2, its synthesis route is as follows.

(4) Preparation of trans-3′-oxospiro[cyclohexane-1,1′(3’H)-isobenzofuran]-4-carboxylic acid A mixture of 4-hydroxymethylspiro[cyclohexane-1,1′(3’H)-isobenzofuran]-3’one (190 mg), chloroform (2.0 mL), acetonitrile (2.0 mL) and sodium phosphate buffer (pH6.5, 2.0 mL) was cooled to 0 C., to which sodium periodate (612 mg) and ruthenium(III) chloride n-hydrate (10 mg) were added and the mixture was stirred for 30 minutes. The reaction mixture was stirred together with 1N hydrochloric acid (2.0 mL) for 30 minutes and partitioned between water (50 mL) and ethyl acetate (50 mL). The organic layer was washed with saturated saline solution, dried over anhydrous Na2SO4 and then concentrated. The residue was purified by column chromatography on silica gel (chloroform/methanol=100/1) to give the subject compound (98.6 mg).

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Reference£º
Patent; Banyu Pharmaceutical Co., Ltd.; US6803372; (2004); B2;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

20759-14-2, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. Ruthenium(III) chloride hydrate, cas is 20759-14-2,the ruthenium-catalysts compound, it is a common compound, a new synthetic route is introduced below.

EXAMPLE 1 Synthesis of (2,4-dimethylpentadienyl) (ethylcyclo-pentadienyl) Ruthenium and Heat Decomposition Properties Thereof 400 g of zinc was weighed into a four-necked flask. After purging the container with argon, 205 ml of 2,4-dimethyl-1,3-pentadiene was added thereto to give a suspension. Then a solution of 30 g of ruthenium trichloride n-hydrate (n: about 3) dissolved in 1000 ml of methanol was dropped thereinto at room temperature over 40 minutes. After the completion of the dropping, the mixture was stirred at room temperature for 30 minutes, then heated to 60 C. and stirred for additional 2 hours. The mixture was once cooled by allowing to stand and then 12 ml of ethylcyclopentadiene was added thereto. The resultant mixture was stirred as such at room temperature for 30 minutes, then heated to 60 C. and stirred for additional 2 hours. After the completion of the reaction, the mixture was cooled to room temperature and the unreacted zinc was removed with the use of a glass filter. Next, it was extracted with hexane (750 ml*1, 300 ml*4). The extracts were concentrated under reduced pressure and the oily product thus obtained was distilled under reduced pressure to thereby give 25.4 g of target (2,4-dimethylpentadienyl) (ethylcyclo-pentadienyl) ruthenium (yield: 76.3%). Oily yellow product: 1H-NMR (500 MHz, CDCl3, deltappm) 5.38 (s, 1H), 4.63 (t, J=2.0 Hz, 2H), 4.52(t, J=2.0 Hz, 2H), 2.70 (d, J=2.5 Hz, 2H), 2.15 (q, J=7.5 Hz, 2H), 1.93 (s, 6H), 1.12 (t, J=7.5 Hz, 3H), -0.09 (d, J=2.5 Hz, 2H) IR (neat, cm-1)

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of Ruthenium(III) chloride hydrate, 20759-14-2

Reference£º
Patent; TOSOH CORPORATION; US2003/88116; (2003); A1;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI