Kinetic and Mechanistic Investigation of Asymmetric Organocatalytic Reactions PDF Download
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Languages : en
Pages :
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Languages : en
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Author: Lukasz Albrecht
Publisher: John Wiley & Sons
ISBN: 3527832203
Category : Technology & Engineering
Languages : en
Pages : 1092
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Book Description
Asymmetric Organocatalysis Comprehensive resource on the latest and most important developments in the highly vivid field of asymmetric organocatalysis The book provides a comprehensive overview of the most important advancements in the field of asymmetric organocatalysis that have occurred within the last decade. It presents valuable examples of newly developed synthetic methodologies based on various organocatalytic activation modes. Special emphasis is given to strategies where organocatalysis is expanding its potential by pushing the boundaries and founding new synergistic interactions with other fields of synthetic chemistry, such as metal catalysis, photocatalysis, and biocatalysis. The application of different concepts (such as vinylogy, dearomatization, or cascade reactivity), resulting in the development of new functionalization strategies, is also discussed. Sample topics covered within the book include: New developments in enantioselective Brønsted acid catalysis with strong hydrogen-bond donors Asymmetric phase-transfer catalysis, from classical applications to new concepts Halogen-bonding organocatalysis Asymmetric electrochemical organocatalysis and synergistic organo-organocatalysis Immobilized organocatalysts for enantioselective continuous flow processes Mechanochemistry and high-pressure techniques in asymmetric organocatalysis Useful tools in elucidation of organocatalytic reaction mechanisms With an overall focus on new reactions and catalysts, this two-volume work is an indispensable source for everyone working in the field of asymmetric organocatalysis.
Author: Manfred Reetz
Publisher: Springer Science & Business Media
ISBN: 3540734953
Category : Science
Languages : en
Pages : 348
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Book Description
This book provides an excellent overview on state-of-the-art of modern organocatalysis. It presents the contributions from leading experts, with backgrounds in academia and industry, to an Ernst Schering Research Foundation Symposium held in April 2007. It will be of interest to those who want a general overview of the topic, but also to those who want to learn more about the state-of-the-art, current trends and perspectives in this highly dynamic field of research.
Author: Maurizio Benaglia
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110588722
Category : Science
Languages : en
Pages : 606
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Book Description
Organocatalysis is considered today one of the three pillars in asymmetric catalysis, along with biocatalysis and organometallic catalysis. The current book gives an overview of the new reactions, the catalysts and their activation strategies reported in recent years. In addition, the applications of organocatalysis in total synthesis, radical reactions, flow chemistry and industrial practice are discussed.
Author: Hélène Pellissier
Publisher: Royal Society of Chemistry
ISBN: 1849730547
Category : Science
Languages : en
Pages : 258
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Book Description
The Series is intended to provide an accessible reference for postgraduates and industrialists working in the field of catalysis and its applications. Books will be produced either as monographs or reference handbooks. The Series will cover research developments and applications of catalysis, in both academia and industry. --Résumé de l'éditeur.
Author: Maxime R Vitale
Publisher: Elsevier
ISBN: 0081011555
Category : Technology & Engineering
Languages : en
Pages : 186
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Book Description
Considering the challenge of sustainability facing our society in the coming decades, catalysis is without any doubt a research area of major importance. In this regard, asymmetric organocatalysis, now considered a pillar of green chemistry, deserves particular attention. The first chapter of this volume examines the topic of asymmetric organocatalysis in light of radical chemistry. Recent important progress in this field has been attained by promoting the formation and harnessing the high reactivity of open-shell intermediates. Merging organocatalysis with radical chemistry has been the key to solving some longstanding bottlenecks, and has also significantly contributed to reinforcing the key role of organocatalysis in asymmetric catalysis. This chapter presents the most significant developments in this area, with a particular focus on asymmetric SOMO- and photoredox-organocatalyzed transformations. Chapter 2 focuses on quaternary ammonium salts (R4N+X-), especially chiral derivatives, and their behavior as unique catalysts in organocatalysis. Forming chiral ion-pairs capable of promoting asymmetric reactions, they also operate as unique “transporters involved in phase transfer catalytic processes between liquid–liquid or liquid–solid systems. Furthermore, they offer unique opportunities when forming cooperative ion-paired entities R4N+X-, allowing a synergistic implication of the counter-ion X- either as Brønsted bases or Lewis bases. Specific design of such chiral catalysts in modern chemistry and better insight into their mode of activation facilitates efficient and unprecedented chemical transformations. This chapter provides an overview of the use of chiral quaternary ammonium salts in organocatalysis, emphasizing both general mechanistic aspects and the scope of this approach. Presents the most significant developments with a particular focus on asymmetric SOMO- and photoredox-organocatalyzed transformations Givies a larger overview of chiral ammonium salts in organocatalysis rather than a specific review dedicated to specialists in this area Affords a historical evolution of this field of research
Author: Aritra Sarkar
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 231
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Book Description
This thesis presents the mechanistic exploration of various catalytic asymmetric alkene halofunctionalization reactions. The mechanistic studies were focused on asymmetric halofunctionalization reactions that are catalyzed by the well-known, commercially available catalyst (DHQD)2PHAL. Chemical kinetics were a central part of this investigation as the study entailed exploration of various kinetic properties, such as rate law equations, effects of isotopic substitution, and competition studies, to obtain key mechanistic insights into these reactions. The kinetic studies were complemented with computational modeling that led to the proposal of detailed catalytic models. Chapter 1 introduces the inherent mechanistic challenges in a successful catalytic asymmetric alkene halofunctionalization reaction and also serves as an introduction to the kinetic tools that will be utilized in the following chapters to investigate the mechanism of the reactions. Chapter 2 presents the mechanistic investigation of (DHQD)2PHAL catalyzed asymmetric chlorolactonization of alkene carboxylic acids and illustrates the mechanistic model of catalysis for this reaction. Chapter 3 presents the mechanistic investigation of DHQD)2PHAL catalyzed asymmetric chloroetherification of alkene amides reaction. Interestingly, despite being driven by the same catalyst and chlorine source, evidences pointed to the two reactions having dramatically divergent mechanistic pictures.
Author: Takahiko Akiyama
Publisher: John Wiley & Sons
ISBN: 1119736412
Category : Science
Languages : en
Pages : 798
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Book Description
Catalytic Asymmetric Synthesis Seminal text presenting detailed accounts of the most important catalytic asymmetric reactions known today This book covers the preparation of enantiomerically pure or enriched chemical compounds by use of chiral catalyst molecules. While reviewing the most important catalytic methods for asymmetric organic synthesis, this book highlights the most important and recent developments in catalytic asymmetric synthesis. Edited by two well-qualified experts, sample topics covered in the work include: Metal catalysis, organocatalysis, photoredox catalysis, enzyme catalysis C–H bond functionalization reactions Carbon–carbon bond formation reactions, carbon–halogen bond formation reactions, hydrogenations, polymerizations, flow reactions Axially chiral compounds Retaining the best of its predecessors but now thoroughly up to date with the important and recent developments in catalytic asymmetric synthesis, the 4th edition of Catalytic Asymmetric Synthesis serves as an excellent desktop reference and text for researchers and students, from upper-level undergraduates all the way to experienced professionals in industry or academia.
Author: Jian Zhou
Publisher: John Wiley & Sons
ISBN: 1118071867
Category : Science
Languages : en
Pages : 712
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Book Description
This book introduces multi-catalyst systems by describing their mechanism and advantages in asymmetric catalysis. • Helps organic chemists perform more efficient catalysis with step-by-step methods • Overviews new concepts and progress for greener and economic catalytic reactions • Covers topics of interest in asymmetric catalysis including bifunctional catalysis, cooperative catalysis, multimetallic catalysis, and novel tandem reactions • Has applications for pharmaceuticals, agrochemicals, materials, and flavour and fragrance
Author: Eric N. Jacobsen
Publisher:
ISBN:
Category : Asymmetric synthesis
Languages : en
Pages : 520
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Book Description
Accompanying CD-ROM contains the full-text search and a state-of-the-art graphic substructure search routine.
