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4925-71-7

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4925-71-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4925-71-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,2 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4925-71:
(6*4)+(5*9)+(4*2)+(3*5)+(2*7)+(1*1)=107
107 % 10 = 7
So 4925-71-7 is a valid CAS Registry Number.
InChI:InChI=1S/C8H14O/c1-2-4-6-8-7(9-8)5-3-1/h7-8H,1-6H2

4925-71-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name cis-1,2-epoxycyclooctane

1.2 Other means of identification

Product number -
Other names (1S,8R)-9-Oxa-bicyclo[6.1.0]nonane

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:4925-71-7 SDS

4925-71-7Relevant articles and documents

Synthesis, structure, and catalytic application of a new (3-methoxy-N-salicylidene)aniline-derived Schiff base complex of methyltrioxorhenium

Yue,Li,Yu,Wang,Gu,Zang

, p. 547 - 551 (2010)

A new (3-methoxy-N-salicylidene)aniline-derived Schiff base complex of methyltrioxorhenium (C14H13NO2 ? CH 3ReO3) (I), displaying a cis-arrangement of the Schiff base ligand to the Re-bonded methyl group, has been synthesized and characterized by elemental analysis, IR, 1H NMR, and single-crystal X-ray diffraction. The X-ray diffraction analysis reveals that I crystallizes in the triclinic system, space group P, which displays a distorted trigonal-bipyramidal structure in the solid with the O- moiety binding to the Lewis acidic Re atom. The intermolecular hydrogen bands link the molecules of the complex into a two-dimensional layer structure. The presence of the π-π stacking interactions enhances the stability of the layers, which are further linked via π-π stacking interactions forming a three-dimensional supramolecular network. The unit cell parameters for I: a = 7.0032(14), b = 9.3762(19), c = 11.649(2) A, α = 84.60(3)°, β = 89.08(3)°, γ = 84.45(3)°, V = 757.9(3) A3, Z = 2, F(000) = 456, R 1 = 0.0591, ωR 2 = 0.1346. In order to study the catalytic activity of complex I, cis-cyclooctene epoxidation in dichloromethane is examined. The result shows that the electron-donating OCH3 group on the Schiff base influences the catalytic behavior significantly.

Manganese(II) complexes of pyridyl-appended diazacyclo-alkanes: Effect of ligand backbone ring size on catalytic olefin oxidation

Saravanan, Natarajan,Palaniandavar, Mallayan

, p. 100 - 111 (2012)

A series of Mn(II) complexes [Mn(L)Cl2] 1-5, where L is a tetradentate 4N ligand such as N,N-bis(2-pyridylmethyl)-1,2-diaminoethane (L1A), 1,4-bis(2-pyridylmethyl)piperazine (L2), N,N-bis(2-pyridyl-methyl) hexahydropyrimidine (L3), N,N-bis(2-pyridylmethyl)-1,4-diazepane (L4) and N,N-bis(2-pyridylmethyl)-1,5-diazocane (L5), has been isolated, characterized by using electronic and ESI-MS spectral techniques and screened for catalytic olefin oxidation with a representative set of olefins. Interestingly, when the ligand N,N-bis(2-pyridylmethyl)imidazolidine (L1) is treated with MnCl 2·6H2O in methanol it undergoes imidazolidine ring hydrolysis to form the complex [Mn(L1A)Cl2] possessing a distorted octahedral coordination geometry around Mn(II). The complex [Mn(L3)(OTf) 2(H2O)] contains Mn(II) with a distorted pentagonal bipyramidal coordination geometry while [Mn(L4)Cl2] contains Mn(II) with an octahedral coordination geometry. The complex [Mn(L5)Cl2] adopts a rare trigonal prismatic coordination geometry, presumably because of steric interactions imposed by the ligand backbone. The catalytic ability of the solvent coordinated complex species [Mn(L)(ACN)2]2+ show significant activity towards olefin epoxidation using iodosylbenzene (PhIO) as oxygen source and addition of N-methylimidazole to the reaction mixture increases the epoxide yield. The epoxidation of cis-cyclooctene catalyzed by the complexes proceeds with high conversion (22-65%) and selectivity (100%). The epoxide yield and product selectivity increase upon increasing the Lewis acidity of the Mn(II) center, as modified by the variation in the diazacycloalkane ligand backbone.

Epoxidation of olefins with hydrogen peroxide catalyzed by a reusable lacunary-type phosphotungstate catalyst

Hua, Li,Qiao, Yunxiang,Li, Huan,Feng, Bo,Pan, Zhenyan,Yu, Yinyin,Zhu, Wenwen,Hou, Zhenshan

, p. 769 - 773 (2011)

Olefins and allylic alcohols have been epoxidized with commercially available hydrogen peroxide (30% H2O2) using a phase transfer catalyst, composed of cetyltrimethylammonium cations and a lacunary-type phosphotungstate anion [PW11O39] 7- or the complete Keggin-type heteropolyanion [PW12O 40]3-, under two-phase conditions using ethyl acetate as the solvent. It was found that the lacunary-type catalyst showed higher activity and better recyclability than the complete Keggin-type catalyst under the same reaction conditions. 31P NMR spectroscopy and solubility measurements for the two catalysts revealed that the [PW11O39] 7- anion had a much faster degradation rate than the [PW 12O40]3- anion in an excess of H 2O2, which resulted in the formation of more catalytically active species. As a result, the lacunary-type phosphotungstate anion-based catalyst gave a better catalytic performance than the complete Keggin-type anion in ethyl acetate. Science China Press and Springer-Verlag Berlin Heidelberg 2011.

Catalytic aerobic oxidation of cycloalkanes with nanostructured amorphous metals and alloys

Kesavan, Venkitasamy,Sivanand, Pennadam S.,Chandrasekaran, Srinivasan,Koltypin, Yuri,Gedanken, Aharon

, p. 3521 - 3523 (1999)

Under mild conditions (40 atm O2, 28?°C, 10-15 h), an efficient aerobic oxidation of cycloalkanes to cycloalkanols can be achieved using nanostructured amorphous metals such as Fe and Co and an amorphous alloy like Fe20Ni80 as catalysts. For example, cyclohexane is oxidized to cyclohexanol with 32-41% conversion, while 1-adamantanol is formed from adamantane with 52-57% conversion.

Ruthenium-Catalyzed Dehydrogenation Through an Intermolecular Hydrogen Atom Transfer Mechanism

Huang, Lin,Bismuto, Alessandro,Rath, Simon A.,Trapp, Nils,Morandi, Bill

, p. 7290 - 7296 (2021/03/01)

The direct dehydrogenation of alkanes is among the most efficient ways to access valuable alkene products. Although several catalysts have been designed to promote this transformation, they have unfortunately found limited applications in fine chemical synthesis. Here, we report a conceptually novel strategy for the catalytic, intermolecular dehydrogenation of alkanes using a ruthenium catalyst. The combination of a redox-active ligand and a sterically hindered aryl radical intermediate has unleashed this novel strategy. Importantly, mechanistic investigations have been performed to provide a conceptual framework for the further development of this new catalytic dehydrogenation system.

Synthesis of a light-harvesting ruthenium porphyrin complex substituted with BODIPY units. Implications for visible light-promoted catalytic oxidations

Malone, Jonathan,Klaine, Seth,Alcantar, Christian,Bratcher, Fox,Zhang, Rui

, p. 4977 - 4985 (2021/03/26)

A light-harvesting ruthenium porphyrin substituted covalently with four boron-dipyrrin (BODIPY) moieties has been synthesized and studied. The resulting complex showed an efficient decarbonylation reaction predominantly due to a photo-induced energy transfer process. Chemical oxidation of the ruthenium(ii) BODIPY-porphyrin afforded a high-energytrans-dioxoruthenium(vi) species that is one order of magnitude more reactive towards alkene oxidation than those analogues supported by conventional porphyrins. In the presence of visible light, the ruthenium(ii) BODIPY-porphyrin displayed remarkable catalytic activity toward sulfide oxidation and alkene epoxidation using iodobenzene diacetate [PhI(OAc)2] and 2,6-dichloropyridineN-oxide (Cl2pyNO) as terminal oxidants, respectively. The findings in this work highlight that porphyrin-BODIPY conjugated metal complexes are potentially useful for visible light-promoted catalytic oxidations.

Biochar as supporting material for heterogeneous Mn(II) catalysts: Efficient olefins epoxidation with H2O2

Borges Regitano, Jussara,Deligiannakis, Yiannis,Gemenetzi, Aikaterini,Louloudi, Maria,Mavrogiorgou, Alexandra,Pierri, Leticia

, (2020/04/20)

A novel type of hybrid catalytic materials [MnII-L?BC] has been developed using biochar (BC) as support material for covalent grafting of a MnII Schiff-base catalyst (MnII-L). The hybrid [MnII-L?BC] materials have been evaluated for an important catalytic process, epoxidation of olefins using H2O2 as oxidant. A number of different substrates were used, with cyclohexene achieving the highest yields. When compared to the non-grafted, homogeneous MnII-L, the hybrid catalysts [MnII-L?BC] show a significant enhancement of the catalytic efficiency i.e. as documented by the increase of Turnover Numbers (TONs) (826 for [MnII-L-SS550ox] and 822 for [MnII-L-SW550ox]) and Turnover Frequencies (TOFs) (551 h?1 for [MnII-L-SS550ox] and 411 h?1 for [MnII-L-SW550ox]). The interfacial catalytic mechanism and the role of the BC support have been analyzed by Raman and Electron Paramagnetic Resonance spectroscopies. Based on these data we discuss a mechanism where the high efficiency of the hybrid materials involves the biochar carbon layers acting as promoters of the substrate and products kinetics. To a broader context, this work exemplifies that biochar-based hybrid materials are potent for oxidative catalysis technologies.

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