Category: ruthenium-catalysts

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Synthesis and evaluation of aniline headgroups for alkynyl thienopyrimidine dual EGFR/ErbB-2 kinase inhibitors, published in 2009-03-01, which mentions a compound: 23856-20-4, Name is 1-Benzyl-5-nitro-1H-indazole, Molecular C14H11N3O2, Application In Synthesis of 1-Benzyl-5-nitro-1H-indazole.

Aniline ‘headgroups’ were synthesized and incorporated into an alkynyl thienopyrimidine series of EGFR and ErbB-2 inhibitors. Potent inhibition of enzyme activity and cellular proliferation was observed In certain instances, protein binding was reduced and oral exposure was found to be somewhat improved relative to compounds containing the reference aniline.

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

Reference of Copper(I) tetra(acetonitrile) tetrafluoroborate. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Copper(I) tetra(acetonitrile) tetrafluoroborate, is researched, Molecular C8H12BCuF4N4, CAS is 15418-29-8, about Coordination diversity in transition metal complexes with 4-aminoantipyrine tethered bis(imino)pyridine ligand: structures, superoxide dismutase and anticancer properties. Author is Pitchaimani, Jayaraman; Rajkumar, Samdavid Thanapaul Rex Jeya; Mahalingam, S. M.; Philip Anthony, Savarimuthu; Moon, Dohyun; Madhu, Vedichi.

The authors report Mn(II), Fe(II) and Cu(I) complexes (BIP-Mn (1), BIP-Fe (3) and BIP-Cu (2)) bearing a non-innocent, NNN pincer ligand, 4-aminoantipyrine tethered 2,6-bis(iminoantipyrine)pyridine (BIP) and structural diversity. The complexes were characterized by different spectroscopic and single-crystal X-ray anal. Superoxide dismutase (SOD) activity was evaluated for BIP and complexes BIP-Mn, BIP-Fe and BIP-Cu. The seven-coordinate BIP-Mn complex showed preeminent SOD activity on comparing to BIP-Fe and BIP-Cu complexes. Besides, preliminary in vitro anticancer properties of BIP-Mn, BIP-Fe and BIP-Cu were studied. Again, BIP-Mn complex showed stronger anticancer activity compared to ligand, BIP-Fe and BIP-Cu complexes.

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

Reference of Copper(I) tetra(acetonitrile) tetrafluoroborate. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Copper(I) tetra(acetonitrile) tetrafluoroborate, is researched, Molecular C8H12BCuF4N4, CAS is 15418-29-8, about Binuclear Cu(I) and Mn(0) Complexes with a Tridentate Pyridine-NHC-Phosphane Ligand in a μ-κ2C,̂N-M;κ1P-M Coordination Mode. Author is Willot, Jeremy; Lugan, Noel; Valyaev, Dmitry A..

The reaction of a non-sym. pyridine-NHC-phosphine (NCP̂) ligand – generated in situ upon the deprotonation of the corresponding imidazolium salt – with equimolar amount of [Cu(NCMe)4](BF4) or Mn2(CO)10 leads to the formation of bimetallic complexes [Cu2(NCP̂)2(NCMe)](BF4)2 and [Mn2(CO)7(NCP̂)], resp., in which the tridentate ligand exhibits an unusual μ-κ2C,̂N-M;κ1P-M coordination mode. According to NMR spectroscopy and mass spectrometry, the binuclear copper complex is in equilibrium in MeCN solution with two mononuclear species, namely [Cu(κ2C,̂P-NCP̂)2](BF4) and [Cu(κ3-N,C,̂P-NCP̂)(NCMe)](BF4).

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

Adams, Richard D.; Pellechia, Perry J.; Smith, Mark D.; Tedder, Jonathan D.; Wakdikar, Nutan D. published the article 《Heterometallic nitrido cluster compounds: Synthesis and characterizations of the first nitrido-containing ruthenium-gold and ruthenium-copper carbonyl cluster complexes》. Keywords: heterometallic nitrido cluster ruthenium gold copper carbonyl preparation structure; crystal mol structure heterometallic nitrido ruthenium gold copper carbonyl.They researched the compound: Copper(I) tetra(acetonitrile) tetrafluoroborate( cas:15418-29-8 ).Computed Properties of C8H12BCuF4N4. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:15418-29-8) here.

The first high nuclearity ruthenium-gold-nitrido carbonyl and ruthenium-copper-nitrido carbonyl cluster compounds have been synthesized and structurally characterized. The reaction of [PPN][Ru5(μ5-N)(CO)14], 1, with [Au(PPh3)]NO3 yielded three new hetero-bimetallic ruthenium-gold-nitrido cluster complexes: monogold-tetraruthenium cluster complex Ru4(μ4-N)(CO)12[μ-Au(PPh3)], 2, goldpentaruthenium cluster complex Ru5(μ5-N)(CO)14[μ-Au(PPh3)], 3 and trigoldpentaruthenium cluster complex Ru5(μ5-N)(CO)13[(μ-AuPPh3){μ3-Au(PPh3)}2], 4. Compound 4 was obtained in a much better yield from the reaction of 1 with [{(PPh3)Au}3O][BF4]. Compounds 3 and 4 consist of a square pyramidal cluster of five ruthenium atoms with an interstitial nitrido ligand in the base of the square pyramid. Compound 4 exhibits a dynamical exchange activity that leads to an averaging of all its three AuPPh3 groups on the NMR time scale. Reaction of 1 with [Cu(PPh3)Br]4 yielded three new hetero-bimetallic ruthenium-copper-nitrido cluster complexes: monocopper-tetraruthenium cluster complex [Ru4(μ4-N)(CO)12(μ-CuPPh3)], 5, monocopperpentaruthenium cluster complex [Ru5(μ5-N)(CO)13(PPh3)(μ3-CuPPh3)], 6, and the tricopperpentaruthenium cluster complex [Ru5(μ5-N)(CO)13(μ-CuPPh3){μ3-Cu(PPh3)2}], 7. The reaction of 1 with [Cu(NCMe)4]BF4 yielded the new complex [Ru5(μ5-N)(CO)14[μ3-Cu(NCMe)]], 8. Compounds 6, 7 and 8 each consist of a square pyramidal cluster of five ruthenium atoms with an interstitial nitrido ligand in the base of the square pyramid. Like 4, compound 7 exhibits a dynamical exchange activity on the NMR time scale among its three CuPPh3 groups. All seven compounds were characterized by IR, 1H NMR and 31P NMR spectroscopies and by single-crystal x-ray diffraction analyses.

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

SDS of cas: 19481-82-4. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Bromopropanenitrile, is researched, Molecular C3H4BrN, CAS is 19481-82-4, about Bulk atom transfer radical polymerization of glycidyl methacrylate at ambient temperature catalyzed by N-(n-propyl)-2-pyridylmethanimine copper (I) complexes. Author is Krishnan, R.; Srinivasan, K. S. V..

Glycidyl methacrylate could be polymerized to high conversions and high mol. weights using 2-bromopropionitrile initiator and CuBr/N-(n-propyl)-2-pyridylmethanimine as the catalyst. The polymerization exhibit first-order kinetics, and the mol. weight increases linearly with monomer conversion. Polydispersities decreases with increasing monomer conversion and finally reaches to Mw/Mn <1.26. Bromopropionitrile acts as an efficient initiator and faster rates of polymerization with controlled mol. weights, and low polydispersities at ambient temperature 1H-NMR studies of the homopolymers reveal that the oxirane ring remained unaffected by the reaction. This result demonstrates that the polymerization proceeded in a controlled/ ""living"" radical process. Here is a brief introduction to this compound(19481-82-4)SDS of cas: 19481-82-4, if you want to know about other compounds related to this compound(19481-82-4), you can read my other articles.

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

Gambouz, Khadija; Abbouchi, Abdelmoula El; Nassiri, Sarah; Suzenet, Franck; Bousmina, Mostapha; Akssira, Mohamed; Guillaumet, Gerald; El Kazzouli, Said published the article 《Palladium-Catalyzed Oxidative Arylation of 1H-Indazoles with Arenes》. Keywords: indazole arene oxidative arylation palladium catalyst; arylated indazole preparation.They researched the compound: 1-Benzyl-5-nitro-1H-indazole( cas:23856-20-4 ).Category: ruthenium-catalysts. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:23856-20-4) here.

A simple method for the direct Pd(OAc)2-catalyzed oxidative arylation of inactivated 1H-indazole derivatives with simple arenes is reported. This method exhibits good reaction efficiency and good functional-group tolerance. Using the developed method, 28 arylated products, e.g., I, were prepared in yields up to 80%.

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

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Copper(I) tetra(acetonitrile) tetrafluoroborate, is researched, Molecular C8H12BCuF4N4, CAS is 15418-29-8, about Scrutinizing “”Ligand Bands”” via Polarized Single-Crystal X-ray Absorption Spectra of Copper(I) and Copper(II) Bis-2,2′-bipyridine Species.Computed Properties of C8H12BCuF4N4.

High-energy resolution fluorescence-detected Cu K-edge x-ray absorption spectroscopy (XAS) and single-crystal polarized XAS data are presented toward refining the assignments of bands assigned as excitations from Cu 1s to ligand-localized MOs. These were previously dubbed XAS-metal-ligand charge transfer (XAS-MLCT) bands. Data are presented for [Cu(xbpy)2]n+ complexes (xbpy = 2,2′-bipyridine (1n+), 4,4′-bisamino-2,2′-bipyridine (2n+), and 4,4′-dimethoxy-2,2′-bipyridine (3n+); n = 1 and 2). Dipolar dependencies of these XAS-MLCT bands in both Cu1+ and Cu2+ species lead to reassignment of these features as owing their intensities primarily to Cu 1s → Cu 4p excitations. The transition densities are Cu-localized, highlighting that XAS-MLCT features in Cu XAS spectra are not charge transfer transitions but rather quasi-at. transitions. Although scrutiny of the acceptor orbitals supports assignment as Cu 1s → ligand π* transitions, it ultimately appears that while the ligand orbital energetics govern the positions of these bands the intensity is conferred through a small degree of metal 4p mixing into otherwise ligand-dominated acceptor MOs. Single-crystal polarized Cu K-edge x-ray absorption spectra are presented toward refining an assignment of transitions that involve ligand-dominated MOs.

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

SDS of cas: 376581-24-7. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Quinolin-6-ylboronic acid, is researched, Molecular C9H8BNO2, CAS is 376581-24-7, about A platform for automated nanomole-scale reaction screening and micromole-scale synthesis in flow.

The scarcity of complex intermediates in pharmaceutical research motivates the pursuit of reaction optimization protocols on submilligram scales. We report here the development of an automated flow-based synthesis platform, designed from com. available components, that integrates both rapid nanomole-scale reaction screening and micromole-scale synthesis into a single modular unit. This system was validated by exploring a diverse range of reaction variables in a Suzuki-Miyaura coupling on nanomole scale at elevated temperatures, generating liquid chromatog.-mass spectrometry data points for 5760 reactions at a rate of >1500 reactions per 24 h. Through multiple injections of the same segment, the system directly produced micromole quantities of desired material. The optimal conditions were also replicated in traditional flow and batch mode at 50- to 200-mg scale to provide good to excellent yields.

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

Computed Properties of C9H8BNO2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Quinolin-6-ylboronic acid, is researched, Molecular C9H8BNO2, CAS is 376581-24-7, about Electro-alkynylation: Intramolecular Rearrangement of Trialkynylorganoborates for Chemoselective C(sp2)-C(sp) Bond Formation. Author is Music, Arif; Nuber, Constantin M.; Lemke, Yannick; Spiess, Philipp; Didier, Dorian.

An alternative and complementary transformation for the synthesis of aryl- and heteroaryl-substituted alkynes RCCR1 (R = 4-methylphenyl, 2-(4-fluorophenyl)ethenyl, 1-benzyl-1H-pyrazol-4-yl, etc.; R1 = t-Bu, 2-phenylethyl, 4-methoxyphenyl, etc.) is presented that relies on a chemoselective electrocoupling process. Tetraorganoborate substrates were logically designed and simply accessed by transmetalations using readily or com. available organotrifluoroborate salts RBF3K.

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

Recommanded Product: 60804-74-2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Tris(2,2′-bipyridine)ruthenium bis(hexafluorophosphate), is researched, Molecular C30H24F12N6P2Ru, CAS is 60804-74-2, about Excited-State Dynamics of [Ru(bpy)3]2+ Thin Films on Sensitized TiO2 and ZrO2. Author is Leandri, Valentina; Liu, Peng; Sadollahkhani, Azar; Safdari, Majid; Kloo, Lars; Gardner, James M..

The excited state dynamics of Tris(2,2′-bipyridine)ruthenium(II) hexafluorophosphate, [Ru(bpy)3(PF6)2], was investigated on the surface of bare and sensitized TiO2 and ZrO2 films. The organic dyes LEG4 and MKA253 were selected as sensitizers. A Stern-Volmer plot of LEG4-sensitized TiO2 substrates with a spin-coated [Ru(bpy)3(PF6)2] layer on top shows considerable quenching of the emission of the latter. Interestingly, time-resolved emission spectroscopy reveals the presence of a fast-decay time component (25±5 ns), which is absent when the anatase TiO2 semiconductor is replaced by ZrO2. It should be specified that the pos. redox potential of the ruthenium complex prevents electron transfer from the [Ru(bpy)3(PF6)2] ground state into the oxidized sensitizer. Therefore, we speculate that the fast-decay time component observed stems from excited-state electron transfer from [Ru(bpy)3(PF6)2] to the oxidized sensitizer. Solid-state dye sensitized solar cells (ssDSSCs) employing MKA253 and LEG4 dyes, with [Ru(bpy)3(PF6)2] as a hole-transporting material (HTM), exhibit 1.2 % and 1.1 % power conversion efficiency, resp. This result illustrates the possibility of the hypothesized excited-state electron transfer.

If you want to learn more about this compound(Tris(2,2′-bipyridine)ruthenium bis(hexafluorophosphate))Recommanded Product: 60804-74-2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(60804-74-2).

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