Nhc P And N P Iridium Catalysts For Hydrogenations And Hydrogen Transfer Reactions
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Nhc P And N P Iridium Catalysts For Hydrogenations And Hydrogen Transfer Reactions
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Author : Sutthichat Kerdphon
language : en
Publisher:
Release Date : 2018
Nhc P And N P Iridium Catalysts For Hydrogenations And Hydrogen Transfer Reactions written by Sutthichat Kerdphon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Amino Group Chemistry
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Author : Alfredo Ricci
language : en
Publisher: John Wiley & Sons
Release Date : 2008-06-25
Amino Group Chemistry written by Alfredo Ricci and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-06-25 with Science categories.
Here, probably the most important functional group in organic chemistry is discussed in one handy volume. The monograph covers its application -- from natural products to synthetic pharmaceuticals -- detailing complex syntheses using the amino group as templates and modern techniques focussing on the introduction of the amino group. A definitive must-have for every chemist.
Iridium Complexes As Highly Active Catalysts For Hydrogen Isotope Exchange And Hydrogen Borrowing Processes
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Author : Philippa Kate Owens
language : en
Publisher:
Release Date : 2018
Iridium Complexes As Highly Active Catalysts For Hydrogen Isotope Exchange And Hydrogen Borrowing Processes written by Philippa Kate Owens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Over the last several decades, the organic chemistry community has become increasingly reliant upon iridium catalysis, with applications reported across a number of research areas. In recent years, the Kerr group has developed a series of iridium complexes, which were found to be excellent catalysts for hydrogen isotope exchange and olefin hydrogenation processes. The work described within this thesis centres upon the expansion of these catalysts' reactivity in hydrogen isotope exchange, as well as the synthesis and application of a series of novel iridium complexes, designed for use in hydrogen borrowing catalysis. Chapter one focuses on the development of three efficient and selective methods for hydrogen isotope exchange. Iridium(I) catalysts previously developed within the group have been employed in the successful deuteration of N-heterocycles, which represent an important and relatively underexplored class of labelling substrates. The labelling of a large range of indole, pyrrole, and quinoline derivatives is reported, in which the regioselectivity can be controlled through careful choice of N-protecting group. Extensive practical and computational mechanistic investigations offered insight into the mechanism of indole C3 labelling, which is believed to proceed via an iridium-indoline intermediate. In chapter two, the design and synthesis of a series of novel unsymmetrical NHC ligands, functionalised with electron donating substituents, is described. The corresponding neutral iridium NHC/halide complexes were prepared, and the steric and electronic properties of the ligands were investigated using a number of techniques. These novel complexes were then tested in the catalysis of hydrogen borrowing processes. Extensive optimisation led to the development of an efficient method for the room-temperature N-alkylation of anilines. This methodology was also expanded to include the synthesis of N-heterocycles viaintramolecular C-N bond formation, albeit using more forcing conditions. Lastly, a small series of chiral NHC ligands was designed, and their corresponding iridium complexes prepared and used in a preliminary screening of asymmetric hydrogen borrowing.
N Heterocyclic Carbene Ligands For Iridium Catalysed Asymmetric Hydrogenation
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Author : Steve Nanchen
language : en
Publisher: Cuvillier Verlag
Release Date : 2005
N Heterocyclic Carbene Ligands For Iridium Catalysed Asymmetric Hydrogenation written by Steve Nanchen and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
N Heterocyclic Carbenes
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Author : Silvia Díez-González
language : en
Publisher: Royal Society of Chemistry
Release Date : 2011
N Heterocyclic Carbenes written by Silvia Díez-González and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Science categories.
Over the last fifteen years, N-heterocyclic carbenes (NHCs) have mostly been used as ancillary ligands for the preparation of transition metal-based catalysts. Compared to phosphorus-containing ligands, NHCs tend to bind more strongly to metal centres, avoiding the necessity for the use of excess ligand in catalytic reactions. The corresponding complexes are often less sensitive to air and moisture, and have proven remarkably resistant to oxidation. Recent developments in catalysis applications have been facilitated by the availability of carbenes stable enough to be bottled, particularly for their use as organocatalysts. This book shows how N-heterocyclic carbenes can be useful in various fields of chemistry and not merely laboratory curiosities or simple phosphine mimics. NHCs are best known for their contribution to ruthenium and palladium-catalysed reactions but the scope of this book is much broader. The synthesis of NHC ligands and their corresponding metal complexes are covered in depth. Moreover, the biological activity of NHC-containing complexes, as well as an overview of their theoretical aspects are included. Such metal species are further examined, not only in terms of their catalytic applications, but also of their stereoelectronic parameters and reactivity/stability. Finally, special attention is given to the hot topic of organocatalysis. The book will be of interest to postgraduates, academic researchers and those working in industry.
Iridium Catalysts For Organic Reactions
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Author :
language : en
Publisher:
Release Date : 2021
Iridium Catalysts For Organic Reactions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Asymmetric synthesis categories.
This new volume "Iridium Catalysts for Organic Reactions" in the series "Topics in Organometallic Chemistry" intends to update several representative well-known reactions and to introduce other less known or new reactions in particular covering sustainability aspects. Iridium complexes are efficient in many catalytic homogeneous transformations providing high efficiency in both results, activity and selectivity. The interest of the book lies in the presentation of the advances, new perspectives and application in a variety of representative iridium-catalysed reaction. All chapters in the volume are contributed by relevant international experts in the field. The book is aimed at researchers, graduate students and synthetic chemists at all levels in academia and industry.
Aqueous Organometallic Catalysis
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Author : Ferenc Joo
language : en
Publisher: Springer Science & Business Media
Release Date : 2001-11-30
Aqueous Organometallic Catalysis written by Ferenc Joo and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-11-30 with Science categories.
Over the past 20 years aqueous organometallic catalysis has found applications in small- scale organic synthesis in the laboratory, as well as in the industrial production of chemicals with a combined output close to one million tons per year. Aqueous/organic two-phase reactions allow easy product-catalyst separation and full catalyst recovery which mean clear benefits not only in economic but also in environmental and green chemistry contexts. Instead of putting together a series of expert reviews of specialized fields, this book attempts to give a comprehensive yet comprehensible description of the various catalytic transformations in aqueous systems as seen by an author who has been working on aqueous organometallic catalysis since its origin. Emphasis is put on the discussion of differences between related non-aqueous and aqueous processes due to the presence of water. The book will be of interest to experts and students working in catalysis, inorganic chemistry or organic synthesis, and may serve as a basis for advanced courses.
Reductions By The Alumino And Borohydrides In Organic Synthesis
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Author : Jacqueline Seyden-Penne
language : en
Publisher: John Wiley & Sons
Release Date : 1997-09-01
Reductions By The Alumino And Borohydrides In Organic Synthesis written by Jacqueline Seyden-Penne and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-09-01 with Science categories.
A complete guide to selection and use of the best reagents for a wide range of transformations This book is the updated and expanded Second Edition of Jacqueline Seyden-Penne's practical guide to selection of reducing reagents in organic synthesis. It is an indispensable working resource for organic synthetic chemists-the only reference focusing exclusively on aluminohydrides and borohydrides and their derivatives. Simple to use, it is organized according to specific reductions so that chemists can more easily match the best reagent to a given transformation. Throughout, Dr. Seyden-Penne emphasizes four crucial categories: compatibility, possibilities for partial reduction, the regio- and stereoselectivity of reductions that are altered or controlled by neighboring groups, and asymmetric reductions. Extremely well-referenced, Reductions by the Alumino- and Borohydrides in Organic Synthesis provides the most up-to-date, detailed coverage of: * Successful techniques for performing highly selective reductions * Chemo-, regio-, stereo-, and enantioselective reductions of both simple and complex compounds * Best methods for obtaining the main functional groups by hydridereduction, provided in quick-reference tabular form * New and more selective reagents developed within the last five years * Experimental conditions, including solvent and temperature, and yields for most cases described.
Hydrogen Transfer Reactions
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Author : Gabriela Guillena
language : en
Publisher: Springer
Release Date : 2016-09-27
Hydrogen Transfer Reactions written by Gabriela Guillena and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-27 with Science categories.
The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.
Co2 Hydrogenation Catalysis
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Author : Yuichiro Himeda
language : en
Publisher: John Wiley & Sons
Release Date : 2021-06-28
Co2 Hydrogenation Catalysis written by Yuichiro Himeda and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-28 with Technology & Engineering categories.
A guide to the effective catalysts and latest advances in CO2 conversion in chemicals and fuels Carbon dioxide hydrogenation is one of the most promising and economic techniques to utilize CO2 emissions to produce value-added chemicals. With contributions from an international team of experts on the topic, CO2 Hydrogenation Catalysis offers a comprehensive review of the most recent developments in the catalytic hydrogenation of carbon dioxide to formic acid/formate, methanol, methane, and C2+ products. The book explores the electroreduction of carbon dioxide and contains an overview on hydrogen production from formic acid and methanol. With a practical review of the advances and challenges in future CO2 hydrogenation research, the book provides an important guide for researchers in academia and industry working in the field of catalysis, organometallic chemistry, green and sustainable chemistry, as well as energy conversion and storage. This important book: Offers a unique review of effective catalysts and the latest advances in CO2 conversion Explores how to utilize CO2 emissions to produce value-added chemicals and fuels such as methanol, olefins, gasoline, aromatics Includes the latest research in homogeneous and heterogeneous catalysis as well as electrocatalysis Highlights advances and challenges for future investigation Written for chemists, catalytic chemists, electrochemists, chemists in industry, and chemical engineers, CO2 Hydrogenation Catalysis offers a comprehensive resource to understanding how CO2 emissions can create value-added chemicals.