Section 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE Product identifiers : 2,6-Diisopropylphenylimido-neophylidene[(S)-(−)- Product name BIPHEN]molybdenum(VI) CAS-No. : 205815-80-1 Relevant identified uses of the substance or mixture and uses advised against Identified uses : Laboratory chemicals, Manufacture of substances Section 2. HAZARDS IDENTIFICATION Classification of the substance or mixture Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008. Not a hazardous substance or mixture according to EC-directives 67/548/EEC or 1999/45/EC. Label elements Caution - substance not yet tested completely. Other hazards - none Section 3. COMPOSITION/INFORMATION ON INGREDIENTS Substances Synonyms : (S)-Schrock-Hoveyda Catalyst Formula : C46H61MoNO2 Molecular Weight : 755,92 g/mol Section 4. FIRST AID MEASURES Description of 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. Most important symptoms and effects, both acute and delayed Indication of any immediate medical attention and special treatment needed no data available Section 5. FIREFIGHTING MEASURES Extinguishing media Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special hazards arising from the substance or mixture Carbon oxides, nitrogen oxides (NOx), Molybdenum oxides Advice for firefighters Wear self contained breathing apparatus for fire fighting if necessary. Further information no data available Section 6. ACCIDENTAL RELEASE MEASURES Personal precautions, protective equipment and emergency procedures Avoid dust formation. Avoid breathing vapors, mist or gas. Environmental precautions Do not let product enter drains. Methods and materials for containment and cleaning up Sweep up and shovel. Keep in suitable, closed containers for disposal. Reference to other sections For disposal see section 13. Section 7. HANDLING AND STORAGE Precautions for safe handling Provide appropriate exhaust ventilation at places where dust is formed.Normal measures for preventive fire protection. Conditions for safe storage, including any incompatibilities Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Recommended storage temperature: 2 - 8 °C Air and moisture sensitive. Store under inert gas. Air-, heat-, and moisture-sensitive. Specific end uses no data available Section 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Control parameters Components with workplace control parameters Exposure controls Appropriate engineering controls General industrial hygiene practice. Personal protective equipment Eye/face protection Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin 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. Body Protection Choose body protection in relation to its type, to the concentration and amount of dangerous substances, and to the specific work-place., The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Respiratory protection Respiratory protection is not required. Where protection from nuisance levels of dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Section 9. PHYSICAL AND CHEMICAL PROPERTIES Information on basic physical and chemical properties a) Appearance Form: solid b) Odour no data available c) Odour Threshold no data available d) pH no data available e) Melting point/freezing no data available point f) Initial boiling point and no data available boiling range g) Flash point no data available h) Evaporation rate no data available i) Flammability (solid, gas) no data available j) Upper/lower no data available flammability or explosive limits k) Vapour pressure no data available l) Vapour density no data available m) Relative density no data available n) Water solubility no data available o) Partition coefficient: n- no data available octanol/water p) Autoignition no data available temperature q) Decomposition no data available temperature r) Viscosity no data available s) Explosive properties no data available t) Oxidizing properties no data available Other safety information no data available Section 10. STABILITY AND REACTIVITY Reactivity no data available Chemical stability no data available Possibility of hazardous reactions no data available Conditions to avoid no data available Incompatible materials Strong oxidizing agents Hazardous decomposition products Other decomposition products - no data available Section 11. TOXICOLOGICAL INFORMATION Information on toxicological effects 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: Not 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 Results of PBT and vPvB assessment no data available Other adverse effects no data available Section 13. DISPOSAL CONSIDERATIONS Waste treatment methods Product Offer surplus and non-recyclable solutions to a licensed disposal company. Contaminated packaging Dispose of as unused product. Section 14. TRANSPORT INFORMATION UN number ADR/RID: - IMDG: - IATA: - UN proper shipping name ADR/RID: Not dangerous goods IMDG: Not dangerous goods IATA: Not dangerous goods Transport hazard class(es) ADR/RID: - IMDG: - IATA: - Packaging group ADR/RID: - IMDG: - IATA: - Environmental hazards ADR/RID: no IMDG Marine pollutant: no IATA: no Special precautions for user no data available SECTION 15 - REGULATORY INFORMATION N/A
分两步制备了两个3,3'-二烷基-5,5',6,6'-四甲基-1,1'-联苯-2,2'-二醇(其中烷基= t -Bu,金刚烷基),并将其拆分作为薄荷醇磷酸酯衍生物。将每种双酚盐的双钾盐加到各种Mo(N-芳基)(CHR)(OTf)2(DME)络合物中,生成Mo(N-芳基)(CHR)(双酚盐)类型的外消旋和对映纯化合物。syn -Mo(N-2,6- i -Pr 2 C 6 H 3)(CHCMe 2 Ph)[(S)-Biphen]和syn -Mo(N-2-CF 3 C 6)的X射线晶体学研究H 4)(CHCMe 3)[(S)-Biad](吡啶)证明了双酚盐配体的绝对立体化学。发现新叶叉烯和新戊叉基络合物在溶液中主要具有顺式构象。Mo(N-芳基)(CHR)[Biphen]配合物的[syn] / [anti]平衡常数随芳基酰亚胺配体尺寸的减小而增加,并随着亚烷基取代基的空间体积的减小而减小。通过单参
分两步制备了两个3,3'-二烷基-5,5',6,6'-四甲基-1,1'-联苯-2,2'-二醇(其中烷基= t -Bu,金刚烷基),并将其拆分作为薄荷醇磷酸酯衍生物。将每种双酚盐的双钾盐加到各种Mo(N-芳基)(CHR)(OTf)2(DME)络合物中,生成Mo(N-芳基)(CHR)(双酚盐)类型的外消旋和对映纯化合物。syn -Mo(N-2,6- i -Pr 2 C 6 H 3)(CHCMe 2 Ph)[(S)-Biphen]和syn -Mo(N-2-CF 3 C 6)的X射线晶体学研究H 4)(CHCMe 3)[(S)-Biad](吡啶)证明了双酚盐配体的绝对立体化学。发现新叶叉烯和新戊叉基络合物在溶液中主要具有顺式构象。Mo(N-芳基)(CHR)[Biphen]配合物的[syn] / [anti]平衡常数随芳基酰亚胺配体尺寸的减小而增加,并随着亚烷基取代基的空间体积的减小而减小。通过单参
Investigations of Reactions between Chiral Molybdenum Imido Alkylidene Complexes and Ethylene: Observation of Unsolvated Base-Free Methylene Complexes, Metalacyclobutane and Metalacyclopentane Complexes, and Molybdenum(IV) Olefin Complexes
作者:W. C. Peter Tsang、Jennifer Y. Jamieson、Sarah L. Aeilts、Kai C. Hultzsch、Richard R. Schrock、Amir H. Hoveyda
DOI:10.1021/om030636+
日期:2004.4.1
molybdacyclobutanes Mo(NR)(*CH2*CH2*CH2)[diolate], olefin complexes Mo(NR)(*CH2CHR)[diolate] (R = H or CMe2Ph), molybdacyclopentane complexes Mo(NR)(*CH2*CH2*CH2*CH2)[diolate], and base-free methylene complexes Mo(NR)(*CH2)[diolate]. We also have crystallographically characterized a molybdenum ethylene complex derived from a biphenolate complex, Mo(N-2,6-Cl2C6H3)(CH2CH2)[rac-Biphen](Et2O).
Molybdenum-Catalyzed Enantioselective Synthesis of Planar-Chiral (η<sup>5</sup>-Phosphacyclopentadienyl)manganese(I) Complexes and Application in Asymmetric Catalysis
Enantioselective desymmetrization of Cs-symmetric (η5-2,5-dialkenylphospholyl)(allyldiphenylphosphine)manganese(I) dicarbonyl complexes 1 was realized by molybdenum-catalyzed asymmetricring-closingmetathesis (ARCM), and the corresponding bridged planar-chiral phosphacymantrene derivatives 2 were obtained in good yields with excellent enantioselectivity. The enantioselectivity of the ARCM reaction
Asymmetric ring-closing metathesis reactions involving achiral and meso substrates
申请人:Massachusetts Institute of Technology
公开号:US06346652B1
公开(公告)日:2002-02-12
A composition and method for the catalytic conversion of a racemic mixture of dienes to a cyclic olefin by a ring-closing metathesis (RCM) reaction are disclosed. The composition, a transition metal complex with an M═C reaction site, contains a bidentate dialkoxide of at least 80% optical purity. Because the M═C reaction site is of a sufficient shape specificity, conferred in part by the dialkoxide of sufficient rigidity and a M═N—R1 site, reacting the composition with a mixture of two enantiomeric dienes results in an olefin metathesis product that has at least a 50% enantiomeric excess of one enantiomer in the mixture. A method is also provided for reacting a composition with a racemic diene mixture to generate a metathesis product that has an enantiomeric excess of at least 50%. Methods are also provided for catalytic enantioselective desymmetrization. One method involves an olefin metathesis reaction with a molecular substrate having a plane of symmetry to form a product free of a plane of symmetry. Another method provides a desymmetrization reaction to occur in the absence of solvent. A method for producing quaternary carbon centers through a desymmetrization reaction is also described.
A composition and method for the catalytic conversion of a racemic mixture of dienes to a cyclic olefin by a ring-closing metathesis (RCM) reaction are disclosed. The composition, a transition metal complex with an M=C reaction site, contains a bidentate dialkoxide of at least 80% optical purity. Because the M=C reaction site is of a sufficient shape specificity, conferred in part by the dialkoxide of sufficient rigidity and an M=N-R1 site, reacting the composition with a mixture of two enantiomeric dienes results in an olefin metathesis product that has at least a 50% enantiomeric excess of one enantiomer in the mixture. A method is also provided for reacting a composition with a racemic diene mixture to generate a metathesis product that has an enantiomeric excess of at least 50%.
TRANSITION METAL CARBENE COMPLEX AND METHOD OF PRODUCING THE SAME
申请人:ZEON CORPORATION
公开号:US20160152645A1
公开(公告)日:2016-06-02
Provided are a transition metal carbene complex represented by the following general formula (1) and a method of producing the same. (In general formula (1), M represents for example a molybdenum atom, R
1
represents for example a C
1
-C-
20
alkyl group optionally having a substituent, L
1
to L
3
each represent a ligand selected for example from a halogen group, R
2
and R
3
each represent for example a hydrogen atom or a C
1
-C
20
alkyl group optionally having a substituent. A represents for example a nitrogen atom, and R
4
to R
7
each represent for example a C
1
-C
20
alkyl group optionally having a substituent.)