Category: ruthenium-catalysts

Name is Dichloro(cycloocta-1,5-diene)ruthenium(II), as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 50982-12-2, its synthesis route is as follows.,50982-12-2

Example 2; Synthesis of the Alkylidene Complex (2): Ru(cod)Cl2 (660 mg, 2.35 mmol) was suspended in iPrOH (20 ml) under an Ar atmosphere. DBU (0.75 ml) and PCy3 solution (c=20%, 0.77 M in toluene, 7.7 ml) was added. The brown suspension obtained was stirred at 80 C. for 1 hour and toluene (25 ml) was then added. The mixture was stirred at 80 C. for a further 30 minutes. The reaction mixture was then cooled to 0 C. and 1-trimethylsilyl-1-hexyne (2.1 g) was added. After stirring for 10 minutes, HCl solution (c=2 M in Et2O, 2.4 ml) was added to the reaction mixture at 0 C. After stirring for 1 hour, the reaction mixture was evaporated. MeOH (about 30 ml) was added to the residue. Filtration gave the complex 2. The NMR also shows by-products.NMR in CDCl3 delta 31P 35.81 ppm. 1H delta 20.01 ppm.

With the complex challenges of chemical substances, we look forward to future research findings about Dichloro(cycloocta-1,5-diene)ruthenium(II)

Reference£º
Patent; Evonik Degussa GmbH; US2011/40099; (2011); A1;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is (1,3-Dimesitylimidazolidin-2-ylidene)(2-isopropoxybenzylidene)ruthenium(VI) chloride, as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 301224-40-8, its synthesis route is as follows.,301224-40-8

General procedure: A mixture of fluorinated acid silver salt 6 (2.2eq.) and dichlororuthenium(IV) complex 5 (1.0eq.) was first dried under vacuum (13Pa) at room temperature for 1h. Dry dichloromethane (5mL) was added and the resulting mixture was stirred at room temperature for 3h in the dark. The solids were filtered off and washed with dry dichloromethane (2mL). Evaporation of the solvent afforded the product 7-9.

With the complex challenges of chemical substances, we look forward to future research findings about (1,3-Dimesitylimidazolidin-2-ylidene)(2-isopropoxybenzylidene)ruthenium(VI) chloride

Reference£º
Article; Babun?k, Mario; ?im?nek, Ond?ej; Ho?ek, Jan; Ryba?kova, Marketa; Cva?ka, Josef; B?ezinova, Anna; Kvi?ala, Jaroslav; Journal of Fluorine Chemistry; vol. 161; (2014); p. 66 – 75;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is Dichloro(2-isopropoxyphenylmethylene)(tricyclohexylphosphine)ruthenium (II), as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 203714-71-0, its synthesis route is as follows.,203714-71-0

PIB-supported Grubbs-Hoveyda 2nd generation catalyst (molecule 8): A mixture of 1.14 g (0.48 mmol) of 1,3-bis(2,6-dimethyl-4-(polyisobutyl)phenyl)-4,5-dihydro-imidazolium tetrafluoroborate, 0.15 g (0.75 mmol) of KHMDS, 0.05 g (0.5 mmol) of CuCl and 0.36 g (0.57 mmol) of 1st generation Hoveyda-Grubbs catalyst was prepared was dissolved in 5 mL of toluene. The solution was heated to 100 C. for 3 hours. Solvent was removed under reduced pressure and purified by column chromatography (dichloromethane) resulting in a dark green viscous residue. The yield was 60% (0.75 g). 1H-NMR (500 MHz, CDCl3), delta: 0.8-1.6 (m, 280H), 1.87 (s, 2H), 2.41 (b, 6H), 2.62 (b, 6H) 4.15 (s, 4H), 4.90 (m, 1H) 6.8 (m, 2H), 6.98 (m, 1H), 7.22 (b, 4H), 7.47 (m, 1H), and 16.67 (s, 1H). 13C NMR (125 MHz, CDCl3), delta: 21.62, multiple peaks between 30-40 and 58-60, 113.10, 122.42, 123.09, 126.53, 127.01, 129.69, 137.30, 139.21, 145.41, 145.44, 152.16, 152.43, 152.45, 211.19, and 297.23 (m).

With the complex challenges of chemical substances, we look forward to future research findings about Dichloro(2-isopropoxyphenylmethylene)(tricyclohexylphosphine)ruthenium (II)

Reference£º
Patent; Bergbreiter, David E.; Bazzi, Hassan S.; Hongfa, Chayanant; US2009/203860; (2009); A1;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is Dichloro(cycloocta-1,5-diene)ruthenium(II), as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 50982-12-2, its synthesis route is as follows.,50982-12-2

Dichloro(1,5-cyclooctadiene)ruthenium (4.0 g, 0.014 moles), tricyclohexylphosphine (8.4 g, 0.030 moles), degassed triethylamine (2 mL), and degassed sec-butanol (60 mL) were combined in a pressure bottle under argon. The pressure bottle was purged with hydrogen gas, pressurized to 60 psi, and the mixture heated to 80 C. for 18 hours (the bottle was repressurized as needed to maintain 60 psi hydrogen). The reaction mixture was then allowed to cool down and the hydrogen gas was vented off. Degassed methanol (60 mL) was added to the orange slurry and the filtrate decanted off via stick filtration under argon to leave an orange solid in the bottle, which was washed with degassed methanol (60 mL). Degassed toluene (60 mL) was added to the orange solid and the orange slurry cooled to 0 C. Degassed 3-chloro-3-methyl-1-butyne (1.7 mL, 0.015 moles) was added dropwise via syringe at 0 C. The orange slurry progressively turned to a maroon slurry, while gas bubbled away. The mixture was stirred at room temperature for 2 hours after addition was complete. Ligand precursor [ 2] (18 g, 0.102 moles) was then charged and the mixture was heated to 80 C. and sparged with argon for 3 days (degassed toluene was added as needed). The brown slurry was allowed to cool to room temperature and a mixture of 30 mL methanol and 10 mL of concentrated hydrochloric acid was added in air with mixing. After stirring for 15 minutes at room temperature, the two phases were allowed to separate and the methanol phase was decanted off. Trituration with methanol (2¡Á50 mL) gave a solid, which was collected on a frit and washed with more methanol (2¡Á20 mL). The brown solid was then washed with hexanes (2¡Á20 mL) and dried to give [ 8] (5.1 g, 0.085 moles) in 61% yield.

With the complex challenges of chemical substances, we look forward to future research findings about Dichloro(cycloocta-1,5-diene)ruthenium(II)

Reference£º
Patent; MATERIA, INC.; Pederson, Richard L.; Woertink, Jason K.; Haar, Christopher M.; Gindelberger, David E.; Schrodi, Yann; (13 pag.)US9504997; (2016); B2;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is Benzylidenebis(tricyclohexylphosphine)dichlororuthenium, as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 172222-30-9, its synthesis route is as follows.,172222-30-9

In a dry box, a Teflon-sealed n.m.r. tube was charged with (2S)-methyl 2-N-acetylaminopenta-2,4-dienoate 57 (10.8 mg, 63.9 mumol), Grubbs’ catalyst (50.7 mg, 61.6 mumol) and degassed deuterated DCM (CD2Cl2, 0.8 mL) at room temperature. The n.m.r. tube was shaken gently and reaction progress was monitored by 1H and 31P n.m.r. spectroscopy. Compounds were identified by the following diagnostic resonances: 1H n.m.r. (300 MHz, CD2Cl2): After 15 min: Grubbs’ catalyst: delta 8.61 (d, J=7.6 Hz, 2H, ortho-Arom CH), 20.05 (s, 1H, [Ru]CHPh); Ruthenium-dienamide complex 73: delta 7.96 (d, J=11.0 Hz, 1H, [Ru]CHCH), 20.11 (d, J=11.0 Hz, 1H, [Ru]CH); Ruthenium-dienamide chelate 74 (trace): delta 15.20 (d, J=4.2 Hz, 1H, [Ru]CH); Ratio of ruthenium complexes [Ru]CHPh: 73: 74=1.0:1.0:<0.1. After 60 min: Grubbs' catalyst: delta 8.45 (d, J=7.6 Hz, 2H, ortho-Arom CH), 20.04 (s, 1H, [Ru]CHPh); Ruthenium-dienamide complex 73: delta 7.96 (d, J=11.0 Hz, 1H, [Ru]CH=CH), 20.10 (d, J=11.0 Hz, 1H, [Ru]CH); Ruthenium-dienamide chelate 74: delta 6.73 (d, J=3.0 Hz, 1H, [Ru]CHCH), 15.19 (d, J=4.2 Hz, 1H, [Ru]CH); Ratio of ruthenium complexes [Ru]CHPh: 73: 74=3:1:1. After 120 min (no change after 18 h): Ruthenium-dienamide chelate 74: delta 6.71 (d, J=3.0 Hz, 1H, [Ru]CHCH), 15.19 (d, J=4.0 Hz, 1H, [Ru]CH). 31P n.m.r. (300 MHz, CDCl3): delta Ruthenium-dienamide chelate 74: 35.0; Grubbs' catalyst: 37.0; Ruthenium-dienamide complex 73: 38.8; Tricyclohexylphosphine oxide: 46.5. With the complex challenges of chemical substances, we look forward to future research findings about Benzylidenebis(tricyclohexylphosphine)dichlororuthenium Reference£º
Patent; Robinson, Andrea; Elaridi, Jomana; US2007/197429; (2007); A1;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is (1,3-Dimesitylimidazolidin-2-ylidene)(2-isopropoxybenzylidene)ruthenium(VI) chloride, as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 301224-40-8, its synthesis route is as follows.,301224-40-8

General procedure: A mixture of fluorinated acid silver salt 6 (2.2eq.) and dichlororuthenium(IV) complex 5 (1.0eq.) was first dried under vacuum (13Pa) at room temperature for 1h. Dry dichloromethane (5mL) was added and the resulting mixture was stirred at room temperature for 3h in the dark. The solids were filtered off and washed with dry dichloromethane (2mL). Evaporation of the solvent afforded the product 7-9.

With the complex challenges of chemical substances, we look forward to future research findings about (1,3-Dimesitylimidazolidin-2-ylidene)(2-isopropoxybenzylidene)ruthenium(VI) chloride

Reference£º
Article; Babun?k, Mario; ?im?nek, Ond?ej; Ho?ek, Jan; Ryba?kova, Marketa; Cva?ka, Josef; B?ezinova, Anna; Kvi?ala, Jaroslav; Journal of Fluorine Chemistry; vol. 161; (2014); p. 66 – 75;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is Dichloro(2-isopropoxyphenylmethylene)(tricyclohexylphosphine)ruthenium (II), as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 203714-71-0, its synthesis route is as follows.,203714-71-0

NHC ligand precursor 10 (156 mg, .3 mmol), KOz-Bu(F g) (66 mg, .3 mmol), and ruthenium complex 11 (132 mg, .22 mmol) were all combined in toluene in a glove box. The flask was removed and stirred at 60 0C for 18 hours in a fume hood. The reaction mixture was then directly purified by flash column chromatography (5% Et2theta/Hexanes, run 2 times) to yield catalyst 12 (34 mg, 20%) as a green oil. The catalyst was then lyophilized from benzene to give a pale green solid. It should be noted that by 1H NMR the conversion to 12 is 50%. 1H NMR (300 MHz, CDCl3) delta 16.91 (IH, s), 8.14-8.13 (2H, m), 7.73 (2H, m), 7.64 (IH, m), 7.52 (IH, m), 7.06-6.92 (2H, m), 6.62 (IH, t, J = 7.5 Hz), 6.31 (IH, d, J – 8.4 Hz), 4.47 (IH, quint, J = 6 Hz), 3.51 (4H, s), 1.51 (18H, s), 1.35 (6H, d, J = 6 Hz), 1.24 (18H, s); HRMS (EI+) calc for C4IH58N2OCl2Ru 766.2970. Found 766.3007. Fig. 4 depicts the single crystal X-ray structure was obtained for catalyst 12.

With the complex challenges of chemical substances, we look forward to future research findings about Dichloro(2-isopropoxyphenylmethylene)(tricyclohexylphosphine)ruthenium (II)

Reference£º
Patent; MATERIA, INC.; CALIFORNIA INSTITUTE OF TECHNOLOGY; WO2007/75427; (2007); A1;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is Dichloro(cycloocta-1,5-diene)ruthenium(II), as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 50982-12-2, its synthesis route is as follows.,50982-12-2

General procedure: The following common procedure was followed for the synthesesof complexes 1-5: A mixture of the ligand (0.36 mmol) and Ru(1,5-cod)Cl2(0.36 mmol) was dissolved in dry ethanol (10 ml) and the resultingmixture was refluxed for 2 h. The reaction volume was concentratedto a third of its original volume and the suspension was keptat 4 C overnight to give brick red solid which was filtered off,washed with cold ethanol and then diethyl ether. The solid wasdissolved in chloroform and excess of n-hexane was added toinduce the precipitation of the brick red solid product.2.3.1. [RuCl2(1,5cod) (L1)] (1)L1 (0.36 mmol, 66 mg) and Ru(1,5-cod)Cl2 (0.36 mmol,100 mg). Yield: 72% (120 mg). Mp. 220.0 C (dec. turns black withoutmelting). 1H NMR (400 MHz, CDCl3, 25 C, ppm) delta = 8.45 (s, 1H,imine CH), 8.25 (d, 1H, JH-H = 5.16 Hz, a proton of Py), 8.01-7.94(m, 2H, Py), 7.58-7.54 (m, 1H, Py), 7.82 (d, 2H, JH-H = 7.56 Hz,Ph), 7.39-7.34 (m, 3H, Ph), 4.75-4.74 (m, 2H, -CH, cod), 4.15-4.11 (m, 2H, -CH, cod), 2.74-2.57 (m, 4H, -CH2, cod), 2.20-2.14(m, 2H, -CH2, cod), 2.06-2.00 (m, 2H, -CH2, cod). 13C NMR(100 MHz, CDCl3, 25C, ppm) delta = 168.04 (imine C-H), 156.70(Py), 150.60 (Py), 149.44 (Py), 138.11 (Py), 135.94 (Py), 129.02(Ph), 128.93 (Ph), 127.88 (Ph), 127.80 (Ph), 120.81 (Ph), 92.25,91.87 (C, -CH, cod), 29.64, 29.22 (C, -CH2, cod). FT-IR (c/cm1):(cod, CC) 3038-2829 (m), (CN) 1594 (s), 1203 (s), 767 (s), 702(s). UV-Vis (dichloromethane, v/v): kmax (nm) = 229, 292, 345,439. HR-Mass (TOF MS ES+) C20H22N2Ru calculated: 393.0810,found: 393.0815. Anal. Calc. for C20H22Cl2N2Ru: C, 51.95; H, 4.80;N, 6.06. Found: C, 51.87; H, 5.10; N, 6.33.

With the complex challenges of chemical substances, we look forward to future research findings about Dichloro(cycloocta-1,5-diene)ruthenium(II)

Reference£º
Article; Thangavel, Saravanan; Rajamanikandan, Ramar; Friedrich, Holger B.; Ilanchelian, Malaichamy; Omondi, Bernard; Polyhedron; vol. 107; (2016); p. 124 – 135;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is Dichloro(cycloocta-1,5-diene)ruthenium(II), as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 50982-12-2, its synthesis route is as follows.,50982-12-2

A mixture of [RuCl2(COD)]n (155 mg, 0.552 mmol) and la (147 mg, 0.552 mmol) was stirred in toluene (10 ml) at 115 C for 48 h in Kontes pressure tube. After cooling, a brick-colored precipitate was collected on a filter frit, washed with Et20 (3 x 10 ml) and vacuum dried on the filter. The material was extracted on the filter with 5 x 3 ml CH2C12 allowing the filtrates to be collected in 5 separate vials. A red solution in each vial was layered with Et20 (20 ml). In 1 week, the combined precipitates (or red crystals) from each vial were collected, washed with Et20 (3 x 10 ml) and vacuum-dried to afford 144 mg of the desired product (60%). Elem. Anal: Calcd for C28H44CI4N4O2RU2S2 (876.75): C, 38.36; H, 5.06; N, 6.39%. Found C, 38.38; H, 4.99; N, 6.32%. Elem. Anal: Calcd for C28H44CI4N4O2RU2S2 (876.75): C, 38.36; H, 5.06; N, 6.39%. Found (under nitrogen): C, 38.61; H, 4.99; N, 6.17%. The complex is poorly soluble in CDC13, slightly better in CD2C12. 1H NMR (400 MHz, CD2C12, r.t., saturated): delta 2.00 (brs, 1H), 2.15 (d, J~ 14 Hz, 1H), 2.37 (t, J~ 12 Hz, 1H), 2.15 (m, 4H), 2.75-2.94 (m, 3H), 3.04 (d, J~ 14 Hz, 1H), 3.07-3.23 (m, 5H), 3.38 (m, 2H), 3.44-3.62 (m, 3H), 3.61-3.75 (m, 3H), 3.79 (d, J~ 12 Hz, 1H), 3.87 (t, J~ 14 Hz, 1H), 3.93-4.09 (overlapped m, 3H), 4.06 (brs, 1H), 4.44 (t, J~ 11 Hz, 1H), 4.72 (brs, 1H, possibly NH), 5.07 (d, J~ 18 Hz, 1H), 6.72-8.85 (overlapped, 10H), 9.19 (brs, 1H, NH – C1). The same compound is obtained if the synthesis is carried out in the presence of P(C6F5)3. (0457) [0216] An X-ray structure of complex K-1 revealed that one ligand coordinates to one Ru atom via mer-fashion. A second ligand coordinates to second Ru atom via ^ac-fashion. Both Ru atoms are connected via one bridging CI atom. One S(Ph) atom is part of mer-coordinated la. There appears to be a hydrogen-bonding interaction between one NH group of the fac- coordinated ligand and terminal CI atom attached to the first Ru atom. Complex K-1 exists as a single species in solution. The NH hydrogen atom H-bonded to the chloride ligand appears at delta 9.19 ppm in the 1H NMR spectrum. It is shifted to low field by Deltadelta = 4.47 ppm relative to the NH resonance of the non-H bonded NH group.

With the complex challenges of chemical substances, we look forward to future research findings about Dichloro(cycloocta-1,5-diene)ruthenium(II)

Reference£º
Patent; LOS ALAMOS NATIONAL SECURITY, LLC; DUB, Pavel, A.; GORDON, John, Cameron; WO2015/191505; (2015); A1;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Name is Ruthenium(III) chloride, as a common heterocyclic compound, it belongs to ruthenium-catalysts compound, and cas is 10049-08-8, its synthesis route is as follows.,10049-08-8

[(1S,3R)-1-(Methoxycarbonylamino-methyl)-3-methyl-cyclopentyl]-acetic acid ((1S,3R)-1-Benzyl-3-methyl-cyclopentylmethyl)-carbamic acid methyl ester (2.6 g, 9.9 mmol) and sodium periodate (29.8 g, 140 mmol) were stirred together in carbon tetrachloride (30 mL), acetonitrile (30 mL), and water for 6 hours. The mixture was cooled to 0¡ã C., and ruthenium(III) chloride (0.04 g, 0.2 mmol) was added to the reaction mixture. The reaction was allowed to warm to room temperature and stirred for 20 hours. Diethyl ether (50 mL) was added, and the mixture was then extracted with saturated aqueous sodium hydrogen carbonate (200 mL). The aqueous layer was acidified to pH 1 with 4N hydrochloric acid and re-extracted with ethyl acetate (200 mL), dried (MgSO4), and the solvent was evaporated under reduced pressure. The residue was purified by chromatography (silica gel, eluding with a gradient of heptane to 1:1 heptane:ethyl acetate) to give 0.32 g (14percent) of [(1S,3R)-1-(methoxycarbonylamino-methyl)-3-methyl-cyclopentyl]-acetic acid; Rf (heptane-ethyl acetate, 8:2) 0.30; IR thin film (cm-1) 3338 (NH), 1712 (C=O); 1H-NMR (400 MHz; CDCl3): delta 9.29 (1H, s, COOH), 5.17 (1H, bs, NH), 3.71 (3H, s, OMe), 3.30 (1H, dd, J 14.4, 7.1, CHAHBNH2), 3.17 (1H, dd, J 14.4, 6.6, CHAHBNH2), 2.37 (2H, s, CH2COOH), 2.20-1.00 (7H, m), 1.01 (3H, d, J 6.4, CHMe); MS (ES+) m/z 230 (M+H, 63percent), 481 (M+Na,100).

With the complex challenges of chemical substances, we look forward to future research findings about Ruthenium(III) chloride

Reference£º
Patent; Bryans, Justin Stephen; Blakemore, David Clive; Williams, Sophie Caroline; US2003/69438; (2003); A1;,
Highly efficient and robust molecular ruthenium catalysts for water oxidation
Catalysts | Special Issue : Ruthenium Catalysts – MDPI