Directed Selectivity in Organic Synthesis

Directed Selectivity in Organic Synthesis PDF Author: Tanja Gaich
Publisher: John Wiley & Sons
ISBN: 3527667296
Category : Science
Languages : en
Pages : 368

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Book Description
Bringing together examples that until now were often hidden and widely spread throughout the original literature, this textbook shows how to use the correct reagents, conditions or reaction sequences to have access to all possible stereoisomers when beginning synthesis with only a single starting material. Adopting a didactic approach, the authors have chosen general and simple examples throughout the book so that these reactions can be transferred easily to other reaction types. While of major interest to master and PhD students alike, this book is also a source of valuable information for organic chemists in both academia and industry. Additional material for lectures at www.wiley-vch.de/textbooks

Directed Selectivity in Organic Synthesis

Directed Selectivity in Organic Synthesis PDF Author: Tanja Gaich
Publisher: John Wiley & Sons
ISBN: 3527667296
Category : Science
Languages : en
Pages : 368

Get Book

Book Description
Bringing together examples that until now were often hidden and widely spread throughout the original literature, this textbook shows how to use the correct reagents, conditions or reaction sequences to have access to all possible stereoisomers when beginning synthesis with only a single starting material. Adopting a didactic approach, the authors have chosen general and simple examples throughout the book so that these reactions can be transferred easily to other reaction types. While of major interest to master and PhD students alike, this book is also a source of valuable information for organic chemists in both academia and industry. Additional material for lectures at www.wiley-vch.de/textbooks

Selectivity in Organic Synthesis

Selectivity in Organic Synthesis PDF Author: Robert S. Ward
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 194

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Book Description
Selectivity is an important part of organic synthesis. The whole basis of organic chemistry, and especially organic synthesis, depends upon the selectivity which can be achieved in organic reactions. This concise textbook describes the strategies which can be adopted to improve selectivity, and the reactions which have been specially designed to afford high selectivity. The book illustrates the range of processes to which these principles can be applied and the high degree of selectivity which can be achieved. Selectivity in Organic Synthesis provides a solid introduction to this subject, focusing on the key areas and applications. Selectivity in Organic Synthesis features: * A concise introduction to selectivity in organic chemistry. * Lucidly written text including many carefully chosen examples and applications. * Numerous problems along with their solutions to help and encourage the reader. Suitable for organic chemistry students taking a course on organic synthesis or asymmetric synthesis in the 3rd or final year of an undergraduate chemistry course or in the first year of a postgraduate course.

Directed Evolution of Selective Enzymes

Directed Evolution of Selective Enzymes PDF Author: Manfred T. Reetz
Publisher: John Wiley & Sons
ISBN: 3527316604
Category : Science
Languages : en
Pages : 320

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Book Description
Authored by one of the world's leading organic chemists, this authoritative reference provides an overview of basic strategies in directed evolution and introduces common gene mutagenesis, screening and selection methods. Throughout the text, emphasis is placed on methodology development to maximize efficiency, reliability and speed of the experiments and to provide guidelines for efficient protein engineering. Professor Reetz highlights the application of directed evolution experiments to address limitations in the field of enzyme selectivity, substrate scope, activity and robustness. He critically reviews recent developments and case studies, takes a look at future applications in the field of organic synthesis, and concludes with lessons learned from previous experiments.

Asymmetric Organic Synthesis with Enzymes

Asymmetric Organic Synthesis with Enzymes PDF Author: Vicente Gotor
Publisher: John Wiley & Sons
ISBN: 9783527318254
Category : Science
Languages : en
Pages : 348

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Book Description
Perfect for biochemists, synthetic and organic chemists, this book covers all important reactions, including C-C coupling reactions, oxidation reactions and many more. Divided into two parts, the first section on methodology presents new innovative methods for enzymatic catalysis optimization, including such new trends as medium engineering, directed evolution and computer-aided prediction of enantioselectivity. The second and main section deals with applications to synthesis, showing important reaction types and their applications. Only those reactions with very high selectivity are presented, allowing readers to improve their own reaction yields.

Metal Promoted Selectivity in Organic Synthesis

Metal Promoted Selectivity in Organic Synthesis PDF Author: A. Noels
Publisher: Springer Science & Business Media
ISBN: 9401134081
Category : Science
Languages : en
Pages : 375

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Book Description
The demand for selective organic reactions is growing more acute everyday. Indeed, greater product selectivity has an important impact on energy and resource utilization, in terms of reduced process energy requirements for product separation and purification, in terms of low-value by-products, and in terms of environmental acceptance and compatibility. Moreover, more and more chemicals, especially pharmaceuticals, have to be sold in an optically active form. The search for selectivity constitutes a tremendous challenge for the chemists. In the last two decades, homogeneous transition metal based catalysis has emerged as one of the most promising tools for obtaining selectivity. In connection with developments in this area, this book contains updated and expanded versions of most of the lectures presented at a Cornett course held in Trieste (Italy) in 1989 and sponsored by the European Community. A primary aim is to cultivate a deeper understanding of the parameters that govern the selectivities and stimulate a wider utilization of transition metal based catalysis in organic synthesis. All aspects of selectivity, chemo-, regio-, stereo- and enantioselectivity are considered and illustrated by applications in various fields or organic synthesis. The impact of catalysis in oxydation, reduction, carbonylation reactions, carbene chemistry, in Ni and Pd promoted dimerizations, oligomerizations as well as fonctionalisations is stressed, quite often with special emphasis laid on reaction mechanisms. In this aspect, the last chapter examplifies the interest of high pressure NMR and IR when investigating the nature of reaction intermediates in homogeneous reactions.

Templated Organic Synthesis

Templated Organic Synthesis PDF Author: François Diederich
Publisher: John Wiley & Sons
ISBN: 3527613536
Category : Science
Languages : en
Pages : 431

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Book Description
Template-controlled reactions allow the synthesis of complex molecules which would hardly be achievable through classical methods. This handbook offers authoratative information on how noncovalent and covalent templates can be effectively applied to control reaction rates as well as regio- and stereoselectivity. From the concepts of template control such as molecular imprinting, self-replication, and reversible tether-directed remote functionalization, the reader is led to template-based ring-closing reactions, oligomerizations, and multiple functionalizations and their application in the synthesis of supramolecular scaffolds and natural products. The editors and authors (J. F. Stoddart, G. Wulf, D. Lynn, R. Breslow. F. Diederich, just to name a few ) , all internationally recognized experts in their area, succeeded in presenting the manifold aspects of template-controlled synthesis in a didactic way, making this methodology accessible to a broad readership of organic synthetic chemists. Well-selected, reliable key experimental protocols and an up-to-date reference list underline the practical approach of this valuable handbook. Being the first book of its kind, it will serve as a pacemaker and stimulate future research.

Reduction

Reduction PDF Author: Barry M. Trost
Publisher: Elsevier
ISBN: 0080912516
Category : Science
Languages : en
Pages : 1166

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Book Description
This volume contains 37 chapters on methods for reducing functional groups, organized into four main parts. (i) Reduction of C=X systems, where X is an electronegative heteroatom, divided into 14 chapters based on the degree of reduction, the oxidation level of the C=X substrate, and on the nature of the reagent. (ii) Reduction of X=Y systems, divided into three chapters, covering the reduction of such groups as nitro, azo, and the various kinds of P=O and S=O groups. (iii) Reduction of C=C and C≡C, divided into 12 chapters based on the method of reduction, with aromatic, heteroaromatic, and conjugated systems treated separately, and including an extensive discussion of hydrometallation. (iv) Reduction of single bonds, C-X to C-H, in eight chapters, including the hydrogenolysis of the various kinds of C-X bonds, the reduction of epoxides, and the reduction of vinyl derivatives to alkenes. Each chapter includes a discussion of chemoselectivity, regioselectivity, and stereoselectivity, wherever it is appropriate, and most include advice on the reagent of choice, and the mechanistic basis of the various methods of reduction. In short, it is, within the space available, as near to a comprehensive account of reduction in organic chemistry as one could hope for.

Comprehensive Organic Synthesis: Additions to and substitutions at C-C[pi]-Bonds

Comprehensive Organic Synthesis: Additions to and substitutions at C-C[pi]-Bonds PDF Author: Barry M. Trost
Publisher: Elsevier
ISBN: 9780080405957
Category : Science
Languages : en
Pages : 1328

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Book Description
Volume 4 focuses on additions and the resulting substitutions at carbon-carbon &pgr;-bonds. Part 1 includes processes generally considered as simple polar reactions, reactive electrophiles and nucleophiles adding to alkenes and alkynes. A major topic is Michael-type addition to electron deficient &pgr;-bonds, featured in the first six chapters. In part 2 are collected the four general processes leading to nucleophilic aromatic substitution, including radical chain processes and transition metal activation through to &pgr;-complexation. Metal-activated addition (generally by nucleophiles) to alkenes and polyenes is presented in part 3, including allylic alkylation catalyzed by palladium. The coverage of nonpolar additions in part 4 includes radical additions, organometal addition (Heck reaction), carbene addition, and 1,3-dipolar cycloadditions.

Remote C-H Bond Functionalizations

Remote C-H Bond Functionalizations PDF Author: Debabrata Maiti
Publisher: John Wiley & Sons
ISBN: 3527346678
Category : Science
Languages : en
Pages : 450

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Book Description
A guide to contemporary advancements in the field of distal C-H functionalizations An important and dynamic topic within the modern field of organic synthesis, selective functionalization of C-H bonds can be used in a variety of applications across the pharmaceutical and agrochemical industries. Remote C-H Bond Functionalizations presents an inclusive account of the most recent developments and potential applications of performing variegated functionalizations selectively at the distal positions of organic compounds. Featuring contributions by an international team of experts, this authoritative volume provides deep insight into distal functionalizations, including detailed discussion of mechanisms, the engineering of templates, and the design of strategies. The text covers a diverse range of topics including C-H functionalization of palladium/norbornene catalysis, ruthenium-catalyzed remote functionalization, the non-directed distal C(sp2)-H, functionalization, transition metal catalyzed distal para-selective C-H functionalization, and much more. Reviewing contemporary advancements in the field while laying the foundation for future research, this important resource: Provides the most recent research and thorough coverage of the subject available in a single volume Offers practical information on C-H functionalizations in various industries Includes an up-to-date introduction to distal C-H functionalizations Remote C-H Bond Functionalizations is a must-read for every synthetic chemist, including chemists working with organometallics, organic chemists and researchers, and industrial chemists.

Oxidation

Oxidation PDF Author: Barry M. Trost
Publisher: Elsevier
ISBN: 0080912508
Category : Science
Languages : en
Pages : 1039

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Book Description
This volume covers all methods of oxidation for use in organic synthesis. Emphasis has been placed on selectivity and functional group compatibility together with practical utility and applications. The volume is broadly divided to cover oxidation of unactivated carbon-hydrogen bonds, oxidation of activated carbon-hydrogen bonds, that is to say those adjacent to activating substituents and adjacent to heteroatoms, and oxidation of carbon-carbon double bonds. The volume also covers oxidation of C-X bonds, carbon-carbon single bonds, heteroatom oxidation and a number of special topics such as electrochemical methods, oxidative rearrangements, solid supported reagents, electron transfer oxidation, and biological methods.