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52390-72-4

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52390-72-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52390-72-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,3,9 and 0 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 52390-72:
(7*5)+(6*2)+(5*3)+(4*9)+(3*0)+(2*7)+(1*2)=114
114 % 10 = 4
So 52390-72-4 is a valid CAS Registry Number.

52390-72-4Relevant academic research and scientific papers

Ruthenium-Catalyzed Oxidation of Alkanes with Peracids

Murahashi, Shun-Ichi,Oda, Yoshiaki,Komiya, Naruyoshi,Naota, Takeshi

, p. 7953 - 7956 (1994)

The ruthenium-catalyzed oxidation of alkanes with peracids under mild conditions gives the corresponding ketones and alcohols highly efficiently.Similar treatment of alkanes in trifluoroacetic acid gives alkyl trifluoroacetates.

Synthesis, structures and catalytic activity of p-tolylimido rhenium(V) complexes incorporating quinoline-derived ligands

Gryca,Machura,Shul'pina, Lidia S.,Shul'pin, Georgiy B.

, p. 683 - 695 (2017)

p-Tolylimido rhenium(V) complexes, trans-(Cl,Cl)-[Re(p-NC6H4CH3)Cl2(4-MeO-quin-2-COO)(PPh3)] (1), trans-(Br,Br)-[Re(p-NC6H4CH3)Br2(4-MeO-quin-2-COO)(PPh3)]·2MeCN (2), trans-(Cl,Cl)-[Re(p-NC6H4CH3)Cl2(isoquin-1-COO)(PPh3)] (3), trans-(Br,Br)-[Re(p-NC6H4CH3)Br2(isoquin-1-COO)(PPh3)] (4), cis-(Cl,Cl)-[Re(p-NC6H4CH3)Cl2(4-MeO-quin-2-COO)(PPh3)] (5), cis-(Br,Br)-[Re(p-NC6H4CH3)Br2(4-MeO-quin-2-COO)(PPh3)]·MeOH (6), cis-(Cl,Cl)-[Re(p-NC6H4CH3)Cl2(isoquin-1-COO)(PPh3)] (7) and cis-(Br,Br)-[Re(p-NC6H4CH3)Br2(isoquin-1-COO)(PPh3)] (8), have been synthesized and characterized using X-ray analysis and spectroscopic methods (IR,1H,13C and31P NMR, UV–Vis). To elucidate the structural, spectroscopic and bonding properties, the theoretical calculations at the DFT level were undertaken for 1, 3, 5 and 7. The synthesized complexes exhibited moderate activity in the oxidation of 1-phenylethanol and certain alkanes (n-heptane and methylcyclohexane) with tert-butyl hydroperoxide (TBHP) in acetonitrile. Chromatograms of products obtained from the alkanes indicated that a sufficient sterical hindrance exists around of the rhenium catalytic center.

Production of Biomass-Based Automotive Lubricants by Reductive Etherification

Jadhav, Deepak,Grippo, Adam M.,Shylesh, Sankaranarayanapillai,Gokhale, Amit A.,Redshaw, John,Bell, Alexis T.

, p. 2527 - 2533 (2017)

Growing concern with the effects of CO2 emissions due to the combustion of petroleum-based transportation fuels has motivated the search for means to increase engine efficiency. The discovery of ethers with low viscosity presents an important opportunity to improve engine efficiency and fuel economy. We show here a strategy for the catalytic synthesis of such ethers by reductive etherification/O-alkylation of alcohols using building blocks that can be sourced from biomass. We find that long-chain branched ethers have several properties that make them superior lubricants to the mineral oil and synthetic base oils used today. These ethers provide a class of potentially renewable alternatives to conventional lubricants produced from petroleum and may contribute to the reduction of greenhouse gases associated with vehicle emissions.

HIGHLY SELECTIVE REDUCING AGENTS. REDUCTION OF NITROBENZENE TO ANILINE IN THE PRESENCE OF ALDEHYDES, ALKYL HALIDES, AND ACID HALIDES.

Gaus, P.L.,Gerritz, Samuel W.,Jeffries, Patrick M.

, p. 5083 - 5086 (1988)

Although the anionic hydride - is capable of reducing ketones and aldehydes under acidic conditions, it also selectively reduces nitrobenzene to aniline, even in the presence of benzaldehyde, benzyl chloride, or benzoyl chloride.

Hydrosilylation of ketones catalyzed with Mg-Al-O-t-Bu hydrotalcite

Chen, Yaoyun,Bai, Ying,Peng, Jiajian,Li, Jiayun,Lai, Guoqiao

, p. 3689 - 3694 (2011)

In this article, a simple and efficient procedure of hydrosilylation of ketones catalyzed with Mg-Al-O-t-Bu hydrotalcite was described. Hydrosilylation of ketones with triethoxysilane was carried out smoothly at room temperature in the presence of Mg-Al- O-t-Bu hydrotalcite without solvent, and the conversions of ketones were more than 90%. The recyclability of Mg-Al-O-t-Bu hydrotalcite was also tested. Copyright Taylor & Francis Group, LLC.

Family of penta- and hexanuclear metallasilsesquioxanes: Synthesis, structure and catalytic properties in oxidations

Bilyachenko, Alexey N.,Kulakova, Alena N.,Shul'pina, Lidia S.,Levitsky, Mikhail M.,Korlyukov, Alexander A.,Khrustalev, Victor N.,Zubavichus, Yan V.,Dorovatovskii, Pavel V.,Tsareva, Ul'yana S.,Shubina, Elena S.,Petrov, Artem A.,Vorontsov, Nikolay V.,Shul'pin, Georgiy B.

, p. 133 - 141 (2018)

The deliberate synthesis of two types of prismatic cage-like metallasilsesquioxanes (hereinafter, referred to as CLMSs), viz., penta- and hexanuclear ones, is reported. It is shown that the size of the prismatic cage can be readily and reliably controlled by synthesis parameters. More specifically, the nuclearity shift from six, which is most common in CLMS chemistry (complexes 1–6, 8), to five, which is observed significantly more rarely, is achieved by applying pyridine as a key solvent/crystallization medium (complexes 7, 9–12). Structures of 1–12 were established by single-crystal X-ray diffraction. In sum, their composition could be described as [PhSiO1.5]12[CuO]6 (for hexanuclear products) or [RSiO1.5]10[MO]5 (R = Ph, Vin, M = Cu, Ni, Co for pentanuclear products). Compounds 7, 9–10 represent the rare examples of cage silsesquioxanes comprising pentagonal metalla-oxa rings of Cu(II) ions. The complex 10 is the very first observation of a co-crystal composed of different CLMS (i.e., two Co(II)5 and one Cu(II)5 prismatic cages). The compound 12 (Co5 cage with vinyl substituents at the silicon atoms) is the very first example of a pentanuclear CLMS-based coordination polymer. Complex 7 efficiently catalyzes oxidation of secondary alcohols to the corresponding ketones and alkanes to the corresponding alkyl hydroperoxides.

(NMCp)2TiCl2-CATALYZED REDUCTION OF ALIPHATIC, AROMATIC AND α,β-UNSATURATED KETONES BY GRIGNARD REAGENT

Zhang, Yongmin,Hu, Zuyao

, p. 4113 - 4114 (1988)

Aliphatic, aromatic and α,β-unsaturated ketones were readily reduced to the corresponding secondary alcohols by iso-propylmagnesium bromide in the presence of a catalytic amount of bis(neomenthylcyclopentadienyl)titanium dichloride.A possible mechanism is discussed.

A CONVENIENT ONE-POT PROCEDURE FOR THE SELECTIVE REDUCTION OF KETONES IN THE PRESENCE OF ALDEHYDES

Paradisi, Mario Paglialunga,Zecchini, Pagani Giampiero,Ortar, Giorgio

, p. 5085 - 5088 (1980)

The title process has been accomplished by a three-step sequence involving protection of aldehyde as the imine, in situ reduction of ketone with lithium tri-tert-butoxyaluminohydride, and regeneration of aldehyde on hydrolytic work-up.

Iron(III) Complexation with Galactodendritic Porphyrin Species and Hydrocarbons’ Oxidative Transformations

Castro, Kelly A. D. F.,Westrup, Kátia C. M.,Silva, Sandrina,Pereira, Patrícia M. R.,Sim?es, Mário M. Q.,Neves, Maria da Gra?a P. M. S.,Cavaleiro, José A. S.,Tomé, Jo?o P. C.,Nakagaki, Shirley

, p. 2857 - 2869 (2021/07/14)

The iron metalation of the known free-base porphyrins H2P2 and H2P3, obtained by structural modification of the well-known TPPF20 (H2P1) with galactose dendritic units, gave the corresponding iron(III) porphyrin complex FeP2 and the solid hybrid material FeP3S. Their synthesis, characterization and catalytic efficacy toward the oxidation of the organic substrates (Z)-cyclooctene, cyclohexane and heptane, are reported. In this work, the possibility to modulate selectivity and chemical efficiency of the catalytic system by using simple and more sophisticated metalloporphyrins is demonstrated. Furthermore, the presence of the galactose dendrimer units at the meso-porphyrin ring positions can tune the oxidation at the terminal positions in linear alkanes. In addition, the FeP3S material was easily recovered and reused at least 3 times for the cyclooctene oxidation. The catalytic performance of material FeP3S, associated with their possibility of reuse, makes this material a promising catalyst.

Well-defined Cp*Co(III)-catalyzed Hydrogenation of Carbonates and Polycarbonates

Dahiya, Pardeep,Gangwar, Manoj Kumar,Sundararaju, Basker

, p. 934 - 939 (2020/12/15)

We herein report the catalytic hydrogenation of carbonates and polycarbonates into their corresponding diols/alcohols using well-defined, air-stable, high-valent cobalt complexes. Several novel Cp*Co(III) complexes bearing N,O-chelation were isolated for the first time and structurally characterized by various spectroscopic techniques including single crystal X-ray crystallography. These novel Co(III) complexes have shown excellent catalytic activity to produce value added diols/alcohols from carbonate and polycarbonates through hydrogenation using molecular hydrogen as sole reductant or iPrOH as transfer hydrogenation source. To demonstrate the developed methodology's practical applicability, we have recycled the bisphenol A monomer from compact disc (CD) through hydrogenation under the established reaction conditions using phosphine-free, earth-abundant, air- and moisture-stable high-valent cobalt catalysts.

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