Tag: M.W:200-300

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Heteroatom-Mediated Interactions between Ruthenium Single Atoms and an MXene Support for Efficient Hydrogen Evolution, published in 2019, which mentions a compound: 14898-67-0, mainly applied to heteroatom ruthenium atom MXene support efficient hydrogen; MXene; hydrogen evolution; photocathodes; single atom catalysts, Product Details of 14898-67-0.

A titanium carbide (Ti3C2Tx) MXene is employed as an efficient solid support to host a nitrogen (N) and sulfur (S) coordinated ruthenium single atom (RuSA) catalyst, which displays superior activity toward the hydrogen evolution reaction (HER). X-ray absorption fine structure spectroscopy and aberration corrected scanning TEM reveal the at. dispersion of Ru on the Ti3C2Tx MXene support and the successful coordination of RuSA with the N and S species on the Ti3C2Tx MXene. The resultant RuSA-N-S-Ti3C2Tx catalyst exhibits a low overpotential of 76 mV to achieve the c.d. of 10 mA cm-2. Furthermore, integrating the RuSA-N-S-Ti3C2Tx catalyst on n+np+-Si photocathode enables photoelectrochem. hydrogen production with exceptionally high photocurrent d. of 37.6 mA cm-2 that is higher than the reported precious Pt and other noble metals catalysts coupled to Si photocathodes. D. functional theory calculations suggest that RuSA coordinated with N and S sites on the Ti3C2Tx MXene support is the origin of this enhanced HER activity. This work would extend the possibility of using the MXene family as a solid support for the rational design of various single atom catalysts.

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Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Recommanded Product: (S)-2-(3-Chloro-2-hydroxypropyl)isoindoline-1,3-dione. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: (S)-2-(3-Chloro-2-hydroxypropyl)isoindoline-1,3-dione, is researched, Molecular C11H10ClNO3, CAS is 148857-42-5, about A phosphonium ylide as a visible light organophotoredox catalyst. Author is Toda, Yasunori; Tanaka, Katsumi; Matsuda, Riki; Sakamoto, Tomoyuki; Katsumi, Shiho; Shimizu, Masahiro; Ito, Fuyuki; Suga, Hiroyuki.

A phosphonium ylide-based visible light organophotoredox catalyst was designed and successfully applied to halohydrin synthesis using trichloroacetonitrile and epoxides. An oxidative quenching cycle by the ylide catalyst was established, which was confirmed by exptl. mechanistic studies.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Ruthenium(III) chloride xhydrate, is researched, Molecular Cl3H2ORu, CAS is 14898-67-0, about TNT Sensor: Stern-Volmer Analysis of Luminescence Quenching of Ruthenium Bipyridine, the main research direction is ruthenium bipyridine luminescence quenching trinitrotoluene sensor Stern Volmer analysis.Computed Properties of Cl3H2ORu.

TNT is both toxic and explosive, and therefore the detection of TNT represents an environmental and a security concern. Dogs are often used for detection, but other methods are needed. This laboratory investigates a ruthenium bipyridine ([Ru(bpy)3]2+) luminescence-based trinitrotoluene (TNT) sensor. Students will synthesize [Ru(bpy)3]2+, investigate sensors, and consider possible mechanistic pathways of quenching. Students are unlikely to have analyzed luminescence quenching data previously and using TNT shows how important the technique is for problems like national security, environmental contamination, and landmine deactivation. The content of the lab is ideal for upper-level laboratories, when students have the foundational coursework to appreciate the interdisciplinary nature of chem. as the experiment integrates inorganic, anal., and phys. chem.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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.Belle, Alessandro; Kusada, Kohei; Kitagawa, Hiroshi; Perosa, Alvise; Castoldi, Lidia; Polidoro, Daniele; Selva, Maurizio researched the compound: Ruthenium(III) chloride xhydrate( cas:14898-67-0 ).Formula: Cl3H2ORu.They published the article 《Carbon-supported WOx-Ru-based catalysts for the selective hydrogenolysis of glycerol to 1,2-propanediol》 about this compound( cas:14898-67-0 ) in Catalysis Science & Technology. Keywords: glycerol propanediol carbon tungsten oxide ruthenium catalyst hydrogenolysis. We’ll tell you more about this compound (cas:14898-67-0).

New C-supported bimetallic Ru-WOx catalysts, prepared by co-impregnation of RuCl3 and Na2WO4, proved highly efficient for the liquid-phase hydrogenolysis of aqueous glycerol into 1,2-propanediol (1,2-PDO). The tuning of the catalyst composition and major reaction parameters, specifically operating at 150°C, 5 bar H2, and Ru : W = 4 : 1 mol/mol, allowed conversion of glycerol and 1,2-PDO selectivity of 73≥99% and 88-98%, resp., with a carbon loss of <5%. Ru-WOx/C offered a steady performance for up to 7 subsequent recycles during which leaching of Ru was negligible, while loss of W decreased from an initial 5 weight% (1st run) to 0.1 weight% after 5 runs. The catalyst characterization, in particular EDX anal. and high-resolution TEM images, confirmed a uniform dispersion of Ru and W on the C surface with the presence of small Ru nanoparticles (below 2 nm) and randomly aggregated dots which could be ascribed to WOx clusters of size below 100 nm. Based on both the Bronsted and the Lewis acidity of WOx species, a reaction mechanism was proposed through an initial dehydration of glycerol followed by a Ru-catalyzed hydrogenation process. I hope my short article helps more people learn about this compound(Ruthenium(III) chloride xhydrate)Formula: Cl3H2ORu. Apart from the compound(14898-67-0), you can read my other articles to know other related compounds.

Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Ruthenium(III) chloride xhydrate( cas:14898-67-0 ) is researched.Safety of Ruthenium(III) chloride xhydrate.Roy, Souvik; Mondru, Anil Kumar; Chakraborty, Tania; Das, Abhijit; Dasgupta, Sandipan published the article 《Apple polyphenol phloretin complexed with ruthenium is capable of reprogramming the breast cancer microenvironment through modulation of PI3K/Akt/mTOR/VEGF pathways》 about this compound( cas:14898-67-0 ) in Toxicology and Applied Pharmacology. Keywords: polyphenol phloretin complex ruthenium anticancer PI3K signaling breast cancer; ruthenium anticancer Akt mTOR VEGF signaling breast cancer; Antioxidant; Apoptosis; Breast carcinoma; Chemotherapeutics; DMBA; Ruthenium-phloretin complex. Let’s learn more about this compound (cas:14898-67-0).

Our recent investigation directed to synthesize a novel ruthenium-phloretin complex accompanied by the study of antioxidant in addition to DNA binding capabilities, to determine the chemotherapeutic activity against breast carcinoma in vitro and in vivo. Ruthenium-phloretin complex was synthesized and characterized by different spectroscopic methods. The complex was further investigated to determine its efficacy in both MCF-7 and MDA-MB-231 human carcinoma cell lines and finally in an in vivo model of mammary carcinogenesis induced by DMBA in rats. Our studies confirm that the chelation of the metal and ligand was materialize by the 3-OH and 9-OH functional groups of the ligand and the complex is found crystalline and was capable of intercalating with CT-DNA. The complex was capable of reducing cellular propagation and initiate apoptotic events in MCF-7 and MDA-MB-231 breast carcinoma cell lines. Ruthenium-phloretin complex could modulate p53 intervene apoptosis in the breast carcinoma, initiated by the trail of intrinsic apoptosis facilitated through Bcl2 and Bax and at the same time down regulating the PI3K/Akt/mTOR pathway coupled with MMP9 regulated tumor invasive pathways. Ruthenium-phloretin chemotherapy could interrupt, revoke or suspend the succession of breast carcinoma by altering intrinsic apoptosis along with the anti-angiogenic pathway.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Category: copper-catalyst. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (S)-2-(3-Chloro-2-hydroxypropyl)isoindoline-1,3-dione, is researched, Molecular C11H10ClNO3, CAS is 148857-42-5, about Taking advantage of lithium monohalocarbenoid intrinsic α-elimination in 2-MeTHF: controlled epoxide ring-opening en route to halohydrins. Author is Ielo, Laura; Miele, Margherita; Pillari, Veronica; Senatore, Raffaele; Mirabile, Salvatore; Gitto, Rosaria; Holzer, Wolfgang; Alcantara, Andres R.; Pace, Vittorio.

A straightforward preparation of different β-halohydrins RCR1(OH)CH2X [R = Ph, 4-ClC6H4, 1,3-dioxoisoindolin-2-yl, etc.; R1 = H, Me, CF3, Ph; X = Cl, Br, I] through boosted Kirmse’s elimination of the corresponding lithium monohalocarbenoids starting from epoxide. Crucial for the development of the method was the use of the eco-friendly solvent 2-MeTHF, which forces the degradation of the incipient monohalolithium, due to the very limited stabilizing effect of this solvent on the chem. integrity of the carbenoid. The uniformly high-yield, the full preservation of the embodied stereochem. information and the high regiocontrol – deduced by selectively preparing variously decorated motifs further document the potential of this operationally simpleand intuitive methodol.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Category: copper-catalyst. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Ruthenium(III) chloride xhydrate, is researched, Molecular Cl3H2ORu, CAS is 14898-67-0, about Identification of a chemical fingerprint linking the undeclared 2017 release of 106Ru to advanced nuclear fuel reprocessing. Author is Cooke, Michael W.; Botti, Adrian; Zok, Dorian; Steinhauser, Georg; Ungar, Kurt R..

The undeclared release and subsequent detection of 106Ru across Europe from late Sept. to early Oct. of 2017 prompted an international effort to ascertain the circumstances of the event. While dispersion modeling, corroborated by ground deposition measurements, has narrowed possible locations of origin, there has been a lack of direct empirical evidence to address the nature of the release. This is due to the absence of radiol. and chem. signatures in the sample matrixes, considering that such signatures encode the history and circumstances of the radioactive contaminant. In limiting cases such as this, the authors introduce the use of selected chem. transformations to elucidate the chem. nature of a radioactive contaminant as part of a nuclear forensic investigation. Using established ruthenium polypyridyl chem., they have shown that a small percentage (1.2±0.4%) of the radioactive 106Ru contaminant exists in a polychlorinated Ru(III) form, partly or entirely as β-106RuCl3, while 20% is both insoluble and chem. inert, consistent with the occurrence of RuO2, the thermodn. end point of the volatile RuO4. Together, these findings present a clear signature for nuclear fuel reprocessing activity, specifically the reductive trapping of the volatile and highly reactive RuO4, as the origin of the release. Considering that the previously established 103Ru:106Ru ratio indicates that the spent fuel was unusually young with respect to typical reprocessing protocol, it is likely that this exothermic trapping process proved to be a tipping point for an already turbulent mixture, leading to an abrupt and uncontrolled release.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Product Details of 14898-67-0. 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: Ruthenium(III) chloride xhydrate, is researched, Molecular Cl3H2ORu, CAS is 14898-67-0, about Photoexcited Electron Dynamics of Nitrogen Fixation Catalyzed by Ruthenium Single-Atom Catalysts.

It is still a grand challenge to exploit efficient catalysts to achieve sustainable photocatalytic N2 reduction under ambient conditions. Here, we developed a ruthenium-based single-atom catalyst anchored on defect-rich TiO2 nanotubes (denoted Ru-SAs/Def-TNs) as a model system for N2 fixation. The constructed Ru-SAs/Def-TNs exhibited a catalytic efficiency of 125.2μmol g-1 h-1, roughly 6 and 13 times higher than those of the supported Ru nanoparticles and Def-TNs, resp. Through ultrafast transient absorption and photoluminescence spectroscopy, we revealed the relationship between catalytic activity and photoexcited electron dynamics in such a model SA catalytic system. The unique ligand-to-metal charge-transfer state formed in Ru-SAs/Def-TNs was found to be responsible for its high catalytic activity because it can greatly promote the transfer of photoelectrons from Def-TNs to the Ru-SAs center and the subsequent capture by Ru-SAs. This work sheds light on the origin of the high performance of SA catalysts from the perspective of photoexcited electron dynamics and hence enriches the mechanistic understanding of SA catalysis.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Synthetic Route of Cl3H2ORu. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Ruthenium(III) chloride xhydrate, is researched, Molecular Cl3H2ORu, CAS is 14898-67-0, about A coordinated ruthenium-rifampicin complex reprogramming the colon carcinoma micro-environment mediated by modulation of p53/AkT/mTOR/VEGF pathway. Author is Zeng, Jie; Zhao, Yu; Li, Kexun; Long, Daoling; Li, Wei; Liang, Liang.

WHO suggests that colon cancer incidences are rising steadily, propelling researchers to search for novel chemotherapeutic options. Metal-based chemotherapy is a potential forte to explore ruthenium-based complexes, exhibiting the capability to influence a variety of cellular targets. We discovered the chemotherapeutic effects of ruthenium-rifampicin complex on HT-29 and HCT-116 human colorectal cell lines and on a chem. developed murine colorectal cancer model. Complex was synthesized and characterized by anal. techniques and evaluation of antioxidant potential along with DNA binding capabilities. The complex minimizes cellular propagation and initiates apoptotic events in the colon cancer cell lines of HT-29 and HCT-116. The results of the in vivo study suggest that the complex has been successful in minimizing the wide spectrum of aberrant crypt foci and hyperplastic lesions, as well as encouraging elevated amounts of CAT, SOD and glutathione. Along with that, p53 could be modulated by the ruthenium-rifampicin complex to interfere with apoptosis in colon carcinoma, initiated by the intrinsic apoptotic trail facilitated through Bcl2 and Bax, thus controlling the Akt/mTOR/VEGF pathway coupled through the WNT/β-catenin trail. Ruthenium-rifampicin chemotherapy could interrupt, retract or interrupt the progression of colorectal cancer through modifying intrinsic apoptosis including the antiangiogenic pathway, thereby achieving the function of a potential contender in chemotherapy in the near future.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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: Ruthenium(III) chloride xhydrate, is researched, Molecular Cl3H2ORu, CAS is 14898-67-0, about Luminescence quenching of tris(4,4′-dimethyl-2,2′-bipyridyl)ruthenium(II) complex with quinones in aprotic polar medium.Computed Properties of Cl3H2ORu.

The photoinduced electron transfer interaction between a luminescent metal-ligand probe, [Ru(dmbpy)3] 2+ and quinones have been investigated by absorption and fluorescence spectroscopy. The reactions of quinones with the excited state ruthenium(II) complex in DMF have been studied by luminescence quenching technique and the bimol. quenching rate constant kq values are found close to the diffusion controlled rate. The complex has an absorption maximum of 458 nm. It shows a photoluminescence at 608 nm. The lifetime of the complex in DMF is 164 ns. The ground state absorption measurements are used to confirm the nature of quenching. Transient absorption spectral measurements are performed and the oxidative nature of quenching is confirmed. The detection of semiquinone anion radical using time resolved transient absorption spectroscopy and the linear variation of log kqvs reduction potential of the quinones confirms the electron transfer nature of the reaction.

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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”