Selenium Reagents & Intermediates in Organic Synthesis

Selenium Reagents & Intermediates in Organic Synthesis PDF Author: C. Paulmier
Publisher: Elsevier
ISBN: 1483286401
Category : Science
Languages : en
Pages : 478

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Book Description
The explosive growth of organoselenium chemistry over the past 12 years can be attributed to the specific properties of organic selenium molecules, which fit the requirements of modern organic synthesis. Most of them are well adapted to chemo-, regio- and stereo-selectivities. In addition, they can be used in mild experimental conditions which are compatible with the stability of both substrates and products in the preparation of unsaturated and functional complex molecules, especially in the field of natural products. This book describes and illustrates different synthetic routes to organic structures using selenium reagents or intermediates. The approach emphasizes that such transformations are simple, efficient and often carried out at room temperature. The scope ranges from the preparation of both inorganic and organic selenium reagents, through descriptions of structure, toxicity, biological aspects and nuclear magnetic resonance, to applications of specific selenium compounds in various syntheses including natural products and biologically active compounds.

Selenium Reagents & Intermediates in Organic Synthesis

Selenium Reagents & Intermediates in Organic Synthesis PDF Author: C. Paulmier
Publisher: Elsevier
ISBN: 1483286401
Category : Science
Languages : en
Pages : 478

Get Book

Book Description
The explosive growth of organoselenium chemistry over the past 12 years can be attributed to the specific properties of organic selenium molecules, which fit the requirements of modern organic synthesis. Most of them are well adapted to chemo-, regio- and stereo-selectivities. In addition, they can be used in mild experimental conditions which are compatible with the stability of both substrates and products in the preparation of unsaturated and functional complex molecules, especially in the field of natural products. This book describes and illustrates different synthetic routes to organic structures using selenium reagents or intermediates. The approach emphasizes that such transformations are simple, efficient and often carried out at room temperature. The scope ranges from the preparation of both inorganic and organic selenium reagents, through descriptions of structure, toxicity, biological aspects and nuclear magnetic resonance, to applications of specific selenium compounds in various syntheses including natural products and biologically active compounds.

Selenium Reagents and Intermediates in Organic Synthesis

Selenium Reagents and Intermediates in Organic Synthesis PDF Author: Claude Paulmier
Publisher: Pergamon
ISBN:
Category : Science
Languages : en
Pages : 484

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Book Description


Selenium and Tellurium Reagents

Selenium and Tellurium Reagents PDF Author: Risto Laitinen
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110529343
Category : Science
Languages : en
Pages : 466

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Book Description
Selenium and Tellurium Reagents provides an in-depth overview of recent advances on the chemistry of these elements. Written by internationally recognized experts, it gives insight into the synthesis, structure, analysis and mechanistic studies of these compounds. The book is organized into four parts which reflect the applications of Se and Te reagents in four areas: inorganic chemistry, organic chemistry, materials science and biochemistry.

Organoselenium Chemistry

Organoselenium Chemistry PDF Author: Thomas Wirth
Publisher: Springer
ISBN: 3540481710
Category : Science
Languages : en
Pages : 259

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Book Description
Embarking on a new millennium, the book in hands describes the recent developments of organsoselenium chemistry in all facets. Various distinguished scientists have contributed, with their skill and expertise, making this book a valuable source for synthetic oriented organic chemists and for those, who want to get a first insight into the chemistry of selenium.

Novel Selenium-Mediated Rearrangements and Cyclisations

Novel Selenium-Mediated Rearrangements and Cyclisations PDF Author: Sohail Anjum Shahzad
Publisher: Springer Science & Business Media
ISBN: 3642331734
Category : Science
Languages : en
Pages : 192

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Book Description
In his thesis, Sohail Shahzad carefully investigates carbon nucleophiles in selenocyclisations, as well as reaction protocols for performing such reactions catalytically. After a comprehensive introduction to the element selenium, the author goes on to report the synthesis of several substrates for carbocyclisation reactions and the use of selenium reagents for the preparation of dihydronaphthalenes. Further chapters detail electrophilic selenium-mediated reactions, and novel strategies using selenium catalysts together with stoichiometric amounts of hypervalent iodine reagents as oxidants to convert stilbene carbosylic acids into the corresponding isocoumarins. This thesis outlines some excellent new synthetic routes which will be useful tools for synthetic organic chemistry in the future.

Organoselenium Chemistry

Organoselenium Chemistry PDF Author: Thomas Wirth
Publisher: John Wiley & Sons
ISBN: 3527641955
Category : Science
Languages : en
Pages : 441

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Book Description
Selenium-based methods in synthetic chemistry have developed rapidly over the past years and are now offering highly useful tools for organic synthesis. Filling the gap for a comprehensive handbook and ready reference, this book covers all modern developments within the field, including biochemical aspects. The chemistry chapters are organized according to the different reactivities of various selenium compounds and reagents, with each chapter dealing with a special reaction type. Also includes a table with 77Se NMR shifts to aid in practical problems. From the Contents: * Electrophilic and Nucleophilic Selenium * Selenium Compounds in Radical Reactions * Selenium-Stabilized Carbanions * Selenium Compounds with Valency Higher than Two * Selenocarbonyls * Selenoxide Elimination and [2,3]-Sigmatropic Rearrangement * Selenium Compounds as Ligands and Catalysts * Biological and Biochemical Aspects of Selenium Compounds

Comprehensive Organic Functional Group Transformations: Synthesis: carbon with one heteroatom attached by a single bond

Comprehensive Organic Functional Group Transformations: Synthesis: carbon with one heteroatom attached by a single bond PDF Author: Alan R. Katritzky
Publisher: Elsevier
ISBN: 9780080423234
Category : Science
Languages : en
Pages : 1474

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Book Description


Selenium and Tellurium Chemistry

Selenium and Tellurium Chemistry PDF Author: J. Derek Woollins
Publisher: Springer Science & Business Media
ISBN: 9783642206993
Category : Science
Languages : en
Pages : 323

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Book Description
Our knowledge of the chemistry of selenium and tellurium has seen significant progress in the last few decades. This monograph comprises contributions from leading scientists on the latest research into the synthesis, structure and bonding of novel selenium and tellurium compounds. It provides insight into mechanistic studies of these compounds and describes coordination chemistry involving selenium and tellurium containing ligands. Contributions also describe the theoretical and spectroscopic studies of selenium and tellurium compounds. Additionally, this monograph outlines the applications of selenium and tellurium in biological systems, materials science and as reagents in organic synthesis and shows how these applications have been a fundamental driving force behind the research into the inorganic and organic chemistry these fascinating elements.

Organoselenium Chemistry

Organoselenium Chemistry PDF Author: Thomas G. Back
Publisher: OUP Oxford
ISBN: 0191589195
Category : Science
Languages : en
Pages : 313

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Book Description
Organoselenium chemistry is proving increasingly valuable to the synthetic organic chemist. Selenium residues are easily introduced into organic molecules, they serve to effect a variety of useful transformations, and are easily removed at the end of the sequence. These processes are often characterized by high chemo- regio- and stereoselectivity. Recent enantioselective variations of selenium-mediated reactions are further extending their scope and utility. The use of organoselenium compounds in organic conductors is another area of intense current interest. Organoselenium Chemistry - A Practical Approach is written by an international group of experts in the field.

Advanced Organic Chemistry

Advanced Organic Chemistry PDF Author: Francis A. Carey
Publisher: Springer Science & Business Media
ISBN: 1461397979
Category : Science
Languages : en
Pages : 817

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Book Description
The main theme of Part B is the description of synthetically useful reactions and the illustration of their application. We have attempted to update the material to reflect the most important advances in synthetic methodology. Because of the extensive developments in the use of organic derivatives of transition metals, as well as of silicon and tin, we have separated the organometallic material into three chapters. Chapter 7 emphasizes organolithium and organomagnesium chemistry and also considers the group lIB metals. Transition metal chemistry is discussed in Chapter 8, with emphasis on copper and palladium intermediates. In Chapter 9, the carbon-carbon bond-forming reactions of organoboranes, silanes, and stannanes are discussed. The increased importance of free-radical reactions in synthesis has led to the incorporation of a section on radical reactions into Chapter 10, in which carbocations, carbenes, and nitrenes are also discussed. Certainly a major advance in synthetic chemistry during the 1980s was the development of methods for enantioselective synthesis. We have increased the level of attention to stereochemistry in the discussion of many reactions. In areas in which new stereoselective methods have been well developed, such as in aldol condensa tions, hydroboration, catalytic reduction, and epoxidation, we discuss these methods. The final chapter discusses some of the general issues which must be addressed in multistep synthesis and provides some illustrative syntheses which can provide the basis for more detailed study of this aspect of synthetic chemistry.