Author: Roman SavkaPublisher:
ISBN:
Category :
Languages : en
Pages : 220
Book Description
Synthesis and Application of New Ruthenium-Based Olefin Metathesis Catalysts
Author: Roman SavkaDesign and Synthesis of Ruthenium Indenylidene-based Catalysts for Olefin Metathesis
Author: César A. Urbina-BlancoPublisher:
ISBN:
Category : Alkenes
Languages : en
Pages : 183
Book Description
As part of a European wide effort to develop metathesis catalysts for use in fine chemical and pharmaceutical compound synthesis, this study focuses on the design and synthesis of ruthenium based catalysts for olefin metathesis. The aim, of this work was simple: to develop new, more active, more stable, easy to synthesise and commercially viable Ruthenium based catalysts, as well trying to rationalize the effect of structural changes on reactivity. Two different approaches were explored in order to develop more active catalysts bearing N-heterocyclic carbene (NHC) ligands: changing the leaving group and the effect of the NHC moiety in indenylidene type complexes. Over 12 new catalysts were developed and their activity compared to that of commercially available catalysts. Overall, the new complexes exhibited superior reactivity compared to previously reported catalysts in several benchmark transformations. However, olefin metathesis is a very substrate specific reaction, and rather than finding one catalyst that is superior to all, a catalogue of catalysts suitable for specific transformations was developed. In addition, the effect of structural changes on substrate activity was investigated in the ring closing metathesis of 1,8-nonadienes. The reaction profiling showcased the presence of a gem-difluoro group as an accelerating group in this incarnation of the olefin metathesis reaction and leads to ring formation over polymerization. In order to rationalize the effect of structural changes on catalyst activity, kinetic studies dealing with the initiation mechanism of ruthenium-indenylidene complexes were examined and compared with that of benzylidene counterparts. It was discovered that not all indenylidene complexes followed the same mechanism, highlighting the importance of steric and electronic properties of so-called spectator ligands, and that there is no single mechanism for the ruthenium-based olefin metathesis reaction. These results highlight the importance of systematic development of catalysts and that as scientists we should not take for granted.
Ruthenium-based Olefin Metathesis Catalysts Coordinated with N-heterocyclic Carbene Ligands
Author: John Philip MorganPublisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 296
Book Description
Handbook of Metathesis, Volume 2
Author: Robert H. GrubbsPublisher: John Wiley & Sons
ISBN: 3527694021
Category : Science
Languages : en
Pages : 744
Book Description
The second edition of the "go-to" reference in this field is completely updated and features more than 80% new content, with emphasis on new developments in the field, especially in industrial applications. No other book covers the topic in such a comprehensive manner and in such high quality. Edited by the Nobel laureate R. H. Grubbs and D. J. O´Leary, Volume 2 of the 3-volume work focusses on applications in organic synthesis. With a list of contributors that reads like a "Who's-Who" of metathesis, this is an indispensable one-stop reference for chemists in academia and industry. View the set here - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527334246.html Other available volumes: Volume 1: Catalyst Development and Mechanism, Editors: R. H. Grubbs and A. G. Wenzel - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339485.html Volume 3: Polymer Synthesis, Editors: R. H. Grubbs and E. Khosravi - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339507.html
Handbook of Metathesis, Volume 1
Author: Robert H. GrubbsPublisher: John Wiley & Sons
ISBN: 3527694005
Category : Science
Languages : en
Pages : 448
Book Description
The second edition of the Handbook of Metathesis, edited by Nobel Prize Winner Robert H. Grubbs and his team, is available as a 3 Volume set as well as individual volumes. Volume 1, edited by R. H. Grubbs together with A. G. Wenzel focusses on Catalyst Development and Mechanism. The new edition of this set is completely updated (more than 80% new content) and expanded, with a special focus on industrial applications. Written by the "Who-is-Who" of metathesis, this book gives a comprehensive and high-quality overview. It is the perfect and ultimate one-stop-reference source in this field and indispensable for chemists in academia and industry alike. View the set here - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527334246.html Other available volumes: Volume 2: Applications in Organic Synthesis, Editors: R. H. Grubbs and D. J. O´Leary - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339493.html Volume 3: Polymer Synthesis, Editors: R. H. Grubbs and E. Khosravi - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339507.html
Metathesis Chemistry
Author: Yavuz ImamogluPublisher: Springer Science & Business Media
ISBN: 1402060912
Category : Technology & Engineering
Languages : en
Pages : 506
Book Description
Discover why olefin metathesis has asserted itself as a powerful strategy for obtaining fine chemicals, biologically active compounds, architecturally complex assemblies, new materials, and functionalized polymers. This volume compiles all the latest trends in olefin metathesis. In particular, you’ll learn how olefin metathesis has growing potential for the development of sustainable technologies with many possible industrial applications.
Design, Synthesis and Applications of Sulfur-ruthenium Based Catalysts for Light Directed Olefin Metathesis Reactions
Author: Efrat LevinRuthenium-based Olefin Metathesis Catalysts
Author: Eric Lee Kuiokalani DiasPublisher:
ISBN:
Category :
Languages : en
Pages : 113
Book Description
Handbook of Metathesis, 3 Volume Set
Author: Robert H. GrubbsPublisher: John Wiley & Sons
ISBN: 3527334246
Category : Science
Languages : en
Pages : 1639
Book Description
Covering the complete breadth of the olefin metathesis reaction. The second edition of the ultimate reference in this field is completely updated and features more than 80% new content, with the focus on new developments in the field, especially in industrial applications. No other book covers the topic in such a comprehensive manner and in such high quality, and this new edition retains the three-volume format: Catalyst Development, Applications in Organic Synthesis and Polymer Synthesis. Edited by a Nobel laureate in the field, and with a list of contributors that reads like a "Who's-Who" of metathesis, this is an indispensable one-stop reference for organic, polymer and industrial chemists, as well as chemists working with organometallics. Individual volumes also available separately to purchase Volume 1: Catalyst Development - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339485.html Volume 2: Applications in Organic Synthesis - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339493.html Volume 3: Polymer Synthesis - http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527339507.html
Olefin Metathesis and Polymerization Catalysts
Author: Yavuz ImamogammaluPublisher: Springer Science & Business Media
ISBN: 940113328X
Category : Science
Languages : en
Pages : 567
Book Description
Olefin metathesis reaction can be considered as one of the most successful organic reactions with many applications in the low molecular weight range and also in the polymer field. The use of catalysts with their selective and effective transformation properties in olefin metathesis I polymerization systems is a growing interest. There has been great effort and competition in developing active and commercially useful catalysts. The main aim of this ASI was to gather several research groups and also the people from industry. to present existing knowledge and latest results in the field. A wide range of topics through homogeneous and heterogeneous aspects have been considered. Attention has been drawn to the metal-carbene and metallacyclobutane complexes as active species, the initiation mechanisms, the stereochemistry and thermodynamics of these reactions. New catalytic systems for the metathesis of alkenes and alkynes and fot' ring opening polymeriZation I block copolymerization reactions have been introduced. Spectroscopic studies for the characteriZation of catalysts, simulation studies explaining the function of chain carrier species and polymer degradation have also been covered. A detailed industrial report concerning the patents and applications in olefin metathesis I cyc1001efin polymerization area, fabrication and derivation has been presented. This volume contains the main lectures and seminars given at the NATO Advanced Study Institute on " Olefin Metathesis and Polymerization Catalysts: Synthesis, Mechanism and Utilization", held at Akcay. Babkesir. Turkey between 10th and 22nd September 1989.