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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.
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.
Author: M. Santelli
Publisher: CRC Press
ISBN: 9780849378669
Category : Science
Languages : en
Pages : 352
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Book Description
Lewis acids provide inexpensive access to elaborated molecules obtained with high selectivities (regio-, stereo-, and enantioselectivity). Lewis Acids and Selectivity in Organic Synthesis is the first book to deal with these new and promising roles of Lewis acids. The book begins with general considerations on Lewis acids and a description of Lewis acid-carbonyl complexes, which are involved in most of the reactions described: ene reactions, allylsilane and allyltin addition to carbonyl compounds, addition of nucleophiles to acetals, conjugated addition of allylsilanes and allyltins to unsaturated carbonyl compounds (Sakurai reaction), and Diels-Alder reaction. Subsequent chapters examine these issue in detail, with special attention given to the way Lewis acids induce diastereo- and enantioselectivity. The extensive use of schemes (approximately 1000) ensures rapid visual uptake of the information. Lewis Acids and Selectivity in Organic Synthesis serves as a valuable source of information for all who face the challenge of selectivity in organic synthesis.
![Comprehensive Organic Synthesis: Additions to and substitutions at C-C[pi]-Bonds PDF](https://books.google.com/books/content/images/frontcover/bGl6wAgLcSQC?fife=w80-h100)
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.
Author: Barry M. Trost
Publisher: Elsevier
ISBN: 9780080405995
Category : Science
Languages : en
Pages : 1174
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Book Description
Volume 8.
Author: Jonathan Clayden
Publisher: Elsevier
ISBN: 0080538169
Category : Science
Languages : en
Pages : 400
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Book Description
This volume, number 23 in the "Tetrahedron Organic Chemistry" series, presents organolithium chemistry from the perspective of a synthetic organic chemist, drawing from the synthetic literature to present a unified overview of how organolithiums can be used to make molecules. The development of methods for the regioselective synthesis of organolithiums has replaced their image of indiscriminate high reactivity with one of controllable and subtle selectivity. Organolithium chemistry has a central role in the selective construction of C-C bonds in both simple and complex molecules, and for example has arguably overtaken aromatic electrophilic substitution as the most powerful method for regioselective functionalisation of aromatic rings. The twin themes of reactivity and selectivity run through the book, which reviews the ways by which organolithiums may be formed and the ways in which they react. Topics include advances in directed metallation, reductive lithiation and organolithium cyclisation reactions, along with a discussion of organolithium stereochemistry and the role played by ligands such as (-)-sparteine.
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
Author: Barry M. Trost
Publisher:
ISBN:
Category :
Languages : en
Pages :
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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.
Author:
Publisher:
ISBN: 9780080359298
Category :
Languages : en
Pages : 25
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Publisher:
ISBN:
Category :
Languages : en
Pages :
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