Keywords:
Metathesis (Chemistry) -- Handbooks, manuals, etc.
;
Metal catalysts -- Industrial applications.
;
Electronic books.
Type of Medium:
Online Resource
Pages:
1 online resource (444 pages)
Edition:
2nd ed.
ISBN:
9783527694006
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1969034
Language:
English
Note:
Cover -- Contents -- Preface -- List of Contributors -- Chapter 1 High-Oxidation State Molybdenum and Tungsten Complexes Relevant to Olefin Metathesis -- 1.1 Introduction -- 1.2 New Imido Ligands and Synthetic Approaches -- 1.3 Bispyrrolide and Related Complexes -- 1.4 Monoalkoxide Pyrrolide (MAP) Complexes -- 1.5 Reactions of Alkylidenes with Olefins -- 1.6 Olefin and Metallacyclopentane Complexes -- 1.7 Tungsten Oxo Complexes -- 1.8 Bisaryloxides -- 1.9 Other Constructs -- 1.10 Conclusions -- Acknowledgments -- References -- Chapter 2 Alkane Metathesis -- 2.1 Introduction -- 2.2 Alkane Metathesis by Single-Catalyst Systems -- 2.2.1 Supported Metal Hydrides -- 2.2.1.1 Supported Zr-Polyhydrides -- 2.2.1.2 Supported Ta-Polyhydrides -- 2.2.1.3 Supported W-Polyhydrides -- 2.2.2 Metal Alkylidene/Alkylidyne on Surface Oxide -- 2.2.2.1 Structure-Activity Relationship of Alkylidene Complexes -- 2.2.2.2 Stoichiometric Activity of Well-Defined, Metal Alkylidenes with Alkanes -- 2.2.2.3 Synthesis of Supported WMe6 on Silica -- 2.3 Alkane Metathesis by Tandem, Dual-Catalytic Systems -- 2.3.1 Introduction -- 2.3.2 The Chevron Process Using WO3/SiO2 and Pt-Li/Al2O3 -- 2.3.3 Tandem, Dual Catalytic System Using Ir-Pincer Ligands and Mo-Alkylidene Complexes -- 2.3.3.1 The Development of Robust, Iridium-Based Alkane Dehydrogenation Catalysts -- 2.3.3.2 Cyclic and Cross-Alkane Metathesis -- 2.4 Conclusion -- References -- Chapter 3 Diastereocontrol in Olefin Metathesis: the Development of Z-Selective Ruthenium Catalysts -- 3.1 Introduction -- 3.2 The Challenge of Z-Selective Olefin Metathesis -- 3.3 Previous Strategies -- 3.4 A Serendipitous Discovery -- 3.5 Catalyst Studies -- 3.5.1 Summary of Substituent Effects -- 3.5.1.1 Investigating the X-type Ligand -- 3.5.1.2 Effect of the NHC -- 3.5.2 Decomposition of Z-Selective Ru Metathesis Catalysts.
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3.6 Applications of Z-Selective Ru Metathesis Catalysts -- 3.6.1 Cross Metathesis -- 3.6.1.1 Homodimerization or Homocoupling -- 3.6.1.2 Other Cross-Metathesis Reactions -- 3.6.2 Ring-Closing Metathesis (RCM) -- 3.6.3 Ring-Opening Metathesis Polymerization (ROMP) -- 3.7 Conclusion -- References -- Chapter 4 Ruthenium Olefin Metathesis Catalysts Supported by Cyclic Alkyl Aminocarbenes (CAACs) -- 4.1 Introduction -- 4.2 Properties and Preparation of CAAC Ligands -- 4.3 CAAC-Supported, Ruthenium Olefin Metathesis Catalysts -- 4.3.1 CAAC Catalyst Development and Their Application to Ring-Closing Metathesis -- 4.3.2 Application to Cross Metathesis, Ethenolysis, and Degenerate Metathesis -- 4.4 Summary -- References -- Chapter 5 Supported Catalysts and Nontraditional Reaction Media -- 5.1 Introduction -- 5.2 Supported Catalyst Systems -- 5.2.1 Supported Catalysts via Covalent Interactions -- 5.2.1.1 Grubbs-Type, Ru-Based Systems -- 5.2.1.2 Schrock-Type, Mo- or W-Based Systems -- 5.2.2 Supported Catalysts via Non-covalent Interactions -- 5.2.2.1 Grubbs-Type, Ru-Based Systems -- 5.2.2.2 Early Transition-Metal Systems -- 5.3 Olefin Metathesis in Nontraditional Media -- 5.3.1 Olefin Metathesis in Water -- 5.3.1.1 Modified Catalyst Architectures -- 5.3.1.2 Commercially Available Catalysts -- 5.3.2 Olefin Metathesis in Ionic Liquids -- 5.3.2.1 Neutral Catalyst Systems -- 5.3.2.2 Ionic Modification to the Catalyst System -- 5.3.3 Olefin Metathesis in Fluorous Media -- 5.4 Conclusions -- References -- Chapter 6 Insights from Computational Studies on d0 Metal-Catalyzed Alkene and Alkyne Metathesis and Related Reactions -- 6.1 Introduction -- 6.2 Alkene Metathesis -- 6.2.1 Well-Defined Systems -- 6.2.1.1 Electronic Structure of M(ER1)(=CHR2)(X)(Y) Molecular Catalysts -- 6.2.1.2 Electronic Structure of Silica-Supported (≡SiO)M(ER1)(=CHtBu)(X) Catalysts.
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6.2.1.3 Electronic Structure of Metallacyclobutane Intermediates for the Molecular Catalysts -- 6.2.1.4 Alkene Metathesis Pathway for Well-Defined Catalysts -- 6.2.1.5 Deactivation and By-Product Formation Pathways for M(ER1)(=CHR2)(X)(Y) Catalysts -- 6.2.2 Classical, Heterogeneous Catalysts -- 6.2.2.1 MoO3 on Alumina -- 6.2.2.2 MoO3 on Silica -- 6.2.2.3 MoO3 on Zeolites -- 6.2.2.4 Re2O7 on Alumina and Silica: Alumina and Related Alumina-Supported CH3ReO3 Systems -- 6.3 Alkyne Metathesis -- 6.3.1 Group 6 M(***CR)(X)(Y)2 Alkylidyne Complexes in Alkyne Metathesis -- 6.3.2 Nitrile-Alkyne Cross Metathesis by the Reaction of W(N)X3 with 2-Butyne -- 6.4 Alkane Metathesis -- 6.4.1 Reactivity of Tantalum Hydrides -- 6.4.2 Reactivity of the Alumina-Supported, Bisalkyl Alkylidyne Tungsten Catalysts -- 6.5 Outlook -- References -- Chapter 7 Computational Studies of Ruthenium-Catalyzed Olefin Metathesis -- 7.1 Introduction -- 7.2 Computational Investigations of Non-Chelated Ruthenium Catalysts -- 7.2.1 Reaction Mechanisms -- 7.2.1.1 General Mechanism -- 7.2.1.2 Associative and Dissociative Mechanisms for Initiation -- 7.2.1.3 Initiation of Catalysts with Hemilabile Ligands -- 7.2.1.4 Bottom-Bound and Side-Bound Olefin Complexes -- 7.2.1.5 Structure of the Metallacyclobutane -- 7.2.2 Effects of Spectator Ligands -- 7.2.2.1 Stability of the Metallacyclobutane -- 7.2.2.2 Binding of Phosphine and Olefin Ligands -- 7.2.2.3 Rotameric Effects on the Alkylidene -- 7.2.2.4 Effect of Anionic Ligands -- 7.2.2.5 Summary of Ligand Effects -- 7.2.3 E/Z Selectivity -- 7.2.4 Reactivities of Substituted Olefins -- 7.2.5 Computations on Different Types of Olefin Metathesis Reactions -- 7.2.5.1 Ring-Opening Metathesis Polymerization -- 7.2.5.2 Ring-Closing Metathesis -- 7.2.5.3 Enyne Metathesis -- 7.2.6 Decomposition of Ruthenium Olefin Metathesis Catalysts.
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7.2.7 Alkene Isomerization -- 7.3 Computational Investigations of Chelated, Z-Selective Ruthenium Catalysts -- 7.3.1 Mechanism and Origins of Z Selectivity -- 7.3.2 Decomposition Pathways of the Chelated Ruthenium Catalysts -- 7.4 Accuracy of the Computational Methods -- References -- Chapter 8 Intermediates in Olefin Metathesis -- 8.1 Introduction -- 8.2 Metathesis-Active, Early-Metal Metallacycles -- 8.3 Intermediates in Ruthenium-Catalyzed Olefin Metathesis -- 8.3.1 Ruthenacyclobutane Intermediates Derived from Phosphonium Alkylidene Complexes -- 8.3.2 Ruthenacyclobutane Intermediates Derived from Bispyridyl Complexes -- 8.3.3 Ruthenium Alkylidene/Olefin Intermediates -- 8.4 Future Directions -- References -- Chapter 9 Factors Affecting Initiation Rates -- 9.1 Introduction -- 9.1.1 Discussion of General Terms -- 9.1.2 Experimental Measurement of Initiation Rates -- 9.2 Grubbs Second-Generation Catalyst -- 9.2.1 Phosphine Dissociation Related to Initiation and Metathesis Efficiency -- 9.2.2 Halide Substitution -- 9.2.3 Solvent Effects -- 9.2.4 Effect of Alkene Structure -- 9.3 Grubbs-Hoveyda-Type Precatalysts -- 9.4 Pyridine Solvates -- 9.5 Piers Catalysts -- 9.6 Indenylidene Carbene Precatalysts -- 9.7 Z-Selective Catalysts -- 9.8 Herrmann-Type, BisNHCs -- 9.9 Conclusions -- Acknowledgments -- References -- Chapter 10 Degenerate Metathesis -- 10.1 Introduction -- 10.2 Degenerate Metathesis Mechanisms -- 10.2.1 Potential Impact on Catalyst Efficiencies -- 10.3 Degenerate Metathesis with Early Transition-Metal Catalysts -- 10.3.1 Homogeneous, Early Transition-Metal Catalysts -- 10.3.2 Heterogeneous, Early Transition-Metal Catalysts -- 10.3.3 Conclusions on Degenerate Metathesis with Early Transition-Metal Catalysts -- 10.4 Degenerate Metathesis with Ruthenium Catalysts -- 10.5 Beneficial Effects of Degenerate Metathesis -- 10.6 Conclusions.
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References -- Chapter 11 Mechanisms of Olefin Metathesis Catalyst Decomposition and Methods of Catalyst Reactivation -- 11.1 Introduction -- 11.2 Decomposition of Mo and W Imido Alkylidene Catalysts and Related Complexes -- 11.2.1 Mechanisms of Decomposition of Mo and W Systems -- 11.2.2 Strategies to Extend the Lifetime of Mo and W Catalysts -- 11.3 Decomposition of Ru Alkylidene Catalysts and Related Complexes -- 11.3.1 Thermal Decomposition of First-Generation Systems -- 11.3.2 Thermal Decomposition of Second-Generation Systems -- 11.3.3 Decomposition in the Presence of Small Molecules and Functional Groups -- 11.3.4 Strategies to Prevent the Decomposition of Ru Catalysts -- 11.3.5 Reactivation of Ruthenium Catalysts -- 11.4 Conclusions -- References -- Chapter 12 Solvent and Additive Effects on Olefin Metathesis -- 12.1 General Introduction -- 12.2 Solvent Effects on Olefin Metathesis -- 12.3 Additive Effects in Olefin Metathesis -- 12.4 Summary -- References -- Chapter 13 Metathesis Product Purification -- 13.1 Introduction -- 13.2 Chromatographic and Chemical Removal of Ruthenium -- 13.3 Removal by Complexation -- 13.4 Conclusion -- References -- Chapter 14 Ruthenium Indenylidene Catalysts for Alkene Metathesis -- 14.1 Introduction -- 14.2 The Initial Development of Indenylidene Metal Complexes for Alkene Metathesis -- 14.2.1 The Ruthenium Allenylidene Precursors -- 14.2.2 From Allenylidene to Indenylidene Ruthenium Complexes and Catalysts -- 14.2.3 Intramolecular Allenylidene-into-Indenylidene Rearrangements -- 14.3 Binuclear Indenylidene Ruthenium Catalysts Arising from Ruthenium(arene) Complexes -- 14.4 Preparation of Ruthenium Indenylidene Catalysts from RuCl2(PPh3)3 -- 14.4.1 First-Generation Ruthenium Indenylidene Catalysts Bearing Two Phosphine Ligands -- 14.4.2 First-Generation Ruthenium Indenylidene Catalysts Bearing a Chelating Ligand.
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14.4.2.1 First-Generation Ruthenium Indenylidene Catalysts Bearing a Bidentate Schiff Base Ligand.
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