Section 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE Product name : 7-Oxabicyclo[4.1.0]heptan-2-one Section 2. HAZARDS IDENTIFICATION Classification of the substance or mixture Not a dangerous substance according to GHS. This substance is not classified as dangerous according to Directive 67/548/EEC. Label elements The product does not need to be labelled in accordance with EC directives or respective national laws. Other hazards - none Section 3. COMPOSITION/INFORMATION ON INGREDIENTS Formula : C6H8O2 Molecular Weight : 112,13 g/mol CAS-No. EC-No. Index-No. Classification Concentration 7-Oxabicyclo[4.1.0]heptan-2-one 6705-49-3 229-751-4 - - - Section 4. FIRST AID MEASURES If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. In case of skin contact Wash off with soap and plenty of water. In case of eye contact Flush eyes with water as a precaution. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Section 5. FIRE-FIGHTING MEASURES Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special protective equipment for fire-fighters Wear self contained breathing apparatus for fire fighting if necessary. Section 6. ACCIDENTAL RELEASE MEASURES Personal precautions Avoid breathing vapors, mist or gas. Environmental precautions Do not let product enter drains. Methods and materials for containment and cleaning up Keep in suitable, closed containers for disposal. Section 7. HANDLING AND STORAGE Precautions for safe handling Normal measures for preventive fire protection. Conditions for safe storage Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Store in cool place. Section 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Personal protective equipment Respiratory protection Respiratory protection not required. For nuisance exposures use type OV/AG (US) or type ABEK (EU EN 14387) respirator cartridges. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Hand protection Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Eye protection Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin and body protection impervious clothing, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Hygiene measures General industrial hygiene practice. Section 9. PHYSICAL AND CHEMICAL PROPERTIES Appearance Form liquid Safety data pH no data available Melting point no data available Boiling point 76 - 78 °C at 20 hPa - lit. Flash point 96,00 °C - closed cup Ignition temperature no data available Lower explosion limit no data available Upper explosion limit no data available Density 1,13 g/mL at 25 °C Water solubility no data available Section 10. STABILITY AND REACTIVITY Chemical stability Stable under recommended storage conditions. Conditions to avoid no data available Materials to avoid Strong oxidizing agents Hazardous decomposition products Hazardous decomposition products formed under fire conditions. - Carbon oxides Section 11. TOXICOLOGICAL INFORMATION Acute toxicity no data available Skin corrosion/irritation no data available Serious eye damage/eye irritation no data available Respiratory or skin sensitization no data available Germ cell mutagenicity no data available Carcinogenicity IARC: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC. Reproductive toxicity no data available Specific target organ toxicity - single exposure no data available Specific target organ toxicity - repeated exposure no data available Aspiration hazard no data available Potential health effects Inhalation May be harmful if inhaled. May cause respiratory tract irritation. Ingestion May be harmful if swallowed. Skin May be harmful if absorbed through skin. May cause skin irritation. Eyes May cause eye irritation. Additional Information RTECS: no data available Section 12. ECOLOGICAL INFORMATION Toxicity no data available Persistence and degradability no data available Bioaccumulative potential no data available Mobility in soil no data available PBT and vPvB assessment no data available Other adverse effects no data available Section 13. DISPOSAL CONSIDERATIONS Product Offer surplus and non-recyclable solutions to a licensed disposal company. Contaminated packaging Dispose of as unused product. Section 14. TRANSPORT INFORMATION ADR/RID Not dangerous goods IMDG Not dangerous goods IATA Not dangerous goods SECTION 15 - REGULATORY INFORMATION N/A
Synthesis of Ketones and Esters from Heteroatom-Functionalized Alkenes by Cobalt-Mediated Hydrogen Atom Transfer
作者:Xiaoshen Ma、Seth B. Herzon
DOI:10.1021/acs.joc.6b01709
日期:2016.10.7
Cobalt bis(acetylacetonate) is shown to mediate hydrogen atom transfer to a broad range of functionalized alkenes; in situ oxidation of the resulting alkylradical intermediates, followed by hydrolysis, provides expedient access to ketones and esters. By modification of the alcohol solvent, different alkyl ester products may be obtained. The method is compatible with a number of functional groups including
Mild and efficient CO-mediated eliminative deoxygenation of epoxides catalyzed by supported gold nanoparticles
作者:Ji Ni、Lin He、Yong-Mei Liu、Yong Cao、He-Yong He、Kang-Nian Fan
DOI:10.1039/c0cc02783a
日期:——
Supportedgoldnanoparticles (NPs), which are well-known epoxidation catalysts, were found to be exceptionally active for the selective deoxygenation of epoxides into alkenes using cheap and easily accessible CO and H(2)O as the reductant.
Effect of Ligand Fields on the Reactivity of O
<sub>2</sub>
‐Activating Iron(II)‐Benzilate Complexes of Neutral N5 Donor Ligands
作者:Shrabanti Bhattacharya、Reena Singh、Tapan Kanti Paine
DOI:10.1002/asia.202000142
日期:2020.4.17
Three new iron(II)-benzilate complexes [(N4Py)FeII (benzilate)]ClO4 (1), [(N4PyMe2 )FeII (benzilate)]ClO4 (2) and [(N4PyMe4 )FeII (benzilate)]ClO4 (3) of neutral pentadentate nitrogen donor ligands have been isolated and characterized to study their dioxygen reactivity. Single-crystal X-ray structures reveal a mononuclear six-coordinate iron(II) center in each case, where benzilate binds to the iron
Activation of H<sub>2</sub>O<sub>2</sub> over Zr(IV). Insights from Model Studies on Zr-Monosubstituted Lindqvist Tungstates
作者:Nataliya V. Maksimchuk、Vasilii Yu. Evtushok、Olga V. Zalomaeva、Gennadii M. Maksimov、Irina D. Ivanchikova、Yuriy A. Chesalov、Ilia V. Eltsov、Pavel A. Abramov、Tatyana S. Glazneva、Vadim V. Yanshole、Oxana A. Kholdeeva、R. John Errington、Albert Solé-Daura、Josep M. Poblet、Jorge J. Carbó
DOI:10.1021/acscatal.1c02485
日期:2021.8.20
(Bu4N)2[W5O18Zr(H2O)3] (1) and (Bu4N)6[W5O18Zr(μ-OH)}2] (2), have been employed as molecular models to unravel the mechanism of hydrogen peroxide activation over Zr(IV) sites. Compounds 1 and 2 are hydrolytically stable and catalyze the epoxidation of C═C bonds in unfunctionalized alkenes and α,β-unsaturated ketones, as well as sulfoxidation of thioethers. Monomer 1 is more active than dimer2. Acid
Zr-单取代的 Lindqvist 型多金属氧酸盐 (Zr-POM),(Bu 4 N) 2 [W 5 O 18 Zr(H 2 O) 3 ] ( 1 ) 和 (Bu 4 N) 6 [W 5 O 18 Zr( μ-OH)} 2 ] ( 2 ),已被用作分子模型来揭示过氧化氢在 Zr(IV) 位点上的活化机制。化合物1和2具有水解稳定性,可催化未官能化烯烃和 α,β-不饱和酮中 C=C 键的环氧化以及硫醚的磺化氧化。单体1比二聚体2更活跃。酸添加剂大大加速了氧化反应,并将氧化剂利用效率提高到>99%。产物分布表明异裂氧转移机制,该机制涉及在 Zr-POM 和 H 2 O 2相互作用时形成的亲电氧化物质。1和2与 H 2 O 2的相互作用以及由此产生的过氧衍生物已通过 UV-vis、FTIR、拉曼光谱、HR-ESI-MS 和组合 HPLC-ICP-原子发射光谱技术进行了研究。一个之间的相互作用17
Nucleophilic versus Electrophilic Activation of Hydrogen Peroxide over Zr-Based Metal–Organic Frameworks
作者:Olga V. Zalomaeva、Vasiliy Yu. Evtushok、Irina D. Ivanchikova、Tatyana S. Glazneva、Yuriy A. Chesalov、Kirill P. Larionov、Igor Y. Skobelev、Oxana A. Kholdeeva
DOI:10.1021/acs.inorgchem.0c01084
日期:2020.8.3
acetonitrile solvent. Kinetic modeling on methyl phenyl sulfoxide oxidation coupled with adsorption studies supports a mechanism that involves the interaction of H2O2 with Zr sites with the formation of a nucleophilic oxidizing species and release of water followed by oxygen atom transfer from the nucleophilic oxidant to sulfoxide that competes with water for Zr sites. The nucleophilic peroxo species coexists
基于Zr的金属有机框架(Zr-MOF)UiO-66和UiO-67在非质子溶剂中催化硫醚氧化,对相应的砜具有前所未有的高选择性(在大约50%的硫化物转化率下,只有1当量的H,96-99%)2 O 2)。已使用测试底物,动力学,吸附,同位素(18 O)标记和光谱学工具研究了反应机理。下列事实指出了过氧物种的优良亲核特征:(1)噻吩5-氧化物的氧化过程中亲核参数X Nu = 0.92,加入酸后其亲核参数X Nu = 0.92。(2)砜与亚砜之比为24的甲基苯亚砜与p竞争氧化-溴-甲基苯基硫醚;(3)相对于甲基苯基亚砜,甲基苯基硫醚氧化的初始速率明显降低(k S / k SO = 0.05);(4)Hammett图的正斜率ρ= + 0.42,用于对位取代的芳基甲基亚砜的竞争性氧化。H 2 O 2在Zr-MOF上的亲核活化还通过其催化α,β-不饱和酮中缺电子的C═C键的环氧化以及乙腈溶剂的氧化来证明