Design and Transformation of Versatile Ruthenium Catalysts PDF Download

Author: Samantha D. Drouin
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 0

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Author: Pierre H. Dixneuf
Publisher: Springer
ISBN: 3319084828
Category : Science
Languages : en
Pages : 404

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The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics in pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors.

Author: Christian Bruneau
Publisher: Springer Science & Business Media
ISBN: 9783540205432
Category : Science
Languages : en
Pages : 368

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With contributions by numerous experts

Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 924

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Author: Renee Michelle Thomas
Publisher:
ISBN:
Category : Platinum group catalysts
Languages : en
Pages : 0

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Author: David Bo Watson
Publisher:
ISBN: 9781617615504
Category : Ruthenium
Languages : en
Pages : 0

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Book Description
Ruthenium compounds constitute a versatile class of catalysts for important synthetic transformations in organic chemistry. The ability of ruthenium to access different oxidation states and to accommodate a large variety of ligands in various coordination geometries gives rise to numerous different metal complexes. These characteristics have led to the use of a large variety of ruthenium complexes in diverse types of research areas such as artificial photosynthesis, photomolecular devices, studies on biological macromolecules, catalytic oxidation of water and organic substrates, and organic synthesis. This book presents current research from across the globe in the study of ruthenium across a broad spectrum of topics.

Author: Gerard van Koten
Publisher: Springer Nature
ISBN: 3030689166
Category : Science
Languages : en
Pages : 451

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This book provides researchers in the fields of organic chemistry, organometallic chemistry and homogeneous catalysis with an overview of significant recent developments in the area of metal-ligand cooperativity, with a focus on pincer architectures. The various contributions highlight the widespread impact of M–L co-operativity phenomena on modern organometallic chemistry and catalyst development. The development of efficient and selective catalytic transformations relies on the understanding and fine control of the various elementary reactions that constitutes a catalytic cycle. Co-operative ligands, which actively participate in bond making and bond breaking together to the metal they support, open up new avenues in this area. In particular, buttressing a weak or reactive metal-ligand bond by flanking coordinating arms in a pincer ligand design is proving a versatile strategy to access robust metal complexes that exhibit unusual and selective reactivity patterns.

Author: César A. Urbina-Blanco
Publisher:
ISBN:
Category : Alkenes
Languages : en
Pages : 183

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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.

Author: Nadine Langenscheidt-Dabringhausen
Publisher:
ISBN: 9783861306146
Category :
Languages : de
Pages : 149

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Author: Jennifer M. Bates
Publisher:
ISBN:
Category :
Languages : en
Pages :

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