Dissertation Abstracts International PDF Download

Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 800

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Author: Marian Mikolajczyk
Publisher: CRC Press
ISBN: 9780849391200
Category : Science
Languages : en
Pages : 294

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Book Description
Over the last three decades, more than 40 different classes of chiral (mirror-image) sulfur compounds have been described, and a number of useful procedures and applications have been developed for their use. Emphasizing modern methodologies, Chiral Sulfur Reagents demonstrates the great potential of enantionmerically pure sulfur reagents in transmitting chirality to other centers. Each chapter highlights the synthesis and synthetic uses of a particular class of chiral sulfur reagent, followed by examples of the most important experimental procedures.

Author: Vasyl Andrushko
Publisher: John Wiley & Sons
ISBN: 1118628330
Category : Science
Languages : en
Pages : 1836

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Book Description
Brings together the best tested and proven stereoselective synthetic methods Both the chemical and pharmaceutical industries are increasingly dependent on stereoselective synthetic methods and strategies for the generation of new chiral drugs and natural products that offer specific 3-D structures. With the publication of Stereoselective Synthesis of Drugs and Natural Products, researchers can turn to this comprehensive two-volume work to guide them through all the core methods for the synthesis of chiral drugs and natural products. Stereoselective Synthesis of Drugs and Natural Products features contributions from an international team of synthetic chemists and pharmaceutical and natural product researchers. These authors have reviewed the tremendous body of literature in the field in order to compile a set of reliable, tested, and proven methods alongside step-by-step guidance. This practical resource not only explores synthetic methodology, but also reaction mechanisms and applications in medicinal chemistry and drug discovery. The publication begins with an introductory chapter covering general principles and methodologies, nomenclature, and strategies of stereoselective synthesis. Next, it is divided into three parts: Part One: General Methods and Strategies Part Two: Stereoselective Synthesis by Bond Formation including C-C bond formation C-H bond formation C-O bond formation C-N bond formation Other C-heteroatom formation and other bond formation Part Three: Methods of Analysis and Chiral Separation References in every chapter serve as a gateway to the literature in the field. With this publication as their guide, chemists involved in the stereoselective synthesis of drugs and natural products now have a single, expertly edited source for all the methods they need.

Author: Raj K. Bansal
Publisher: Springer
ISBN: 364212254X
Category : Science
Languages : en
Pages : 219

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Book Description
Contents: S. Sasaki: Heterophenes Carrying Phosphorus Functional Groups as Key Structures.- D.D. Enchev: Synthesis and Biological Activity of 2,5-Dihydro-1,2-Oxaphosphole-2-Oxide Derivatives.- D. Gudat: Recent Developments in the Chemistry of N -Heterocyclic Phosphines.- J. Drabowicz ∙ D. Krasowska ∙ A. Łopusiński ∙T.S.A. Heugebaert ∙ C.V. Stevens: Selected Five-Membered Phosphorus Heterocycles Containing a Stereogenic Phosphorus.- G. Keglevich: 1-(2,4,6-Trialkylphenyl)-1 H -Phospholes with a Flattened P-Pyramid: Synthesis and Reactivity.- N. Gupta: Recent Advances in the Chemistry of Diazaphospholes

Author: Christian Wolf
Publisher: Royal Society of Chemistry
ISBN: 1847558097
Category : Science
Languages : en
Pages : 533

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Book Description
This book provides an overview of fundamental concepts of asymmetric synthesis highlighting the significance of stereochemical and stereodynamic reaction control. Topics include kinetic resolution (KR), dynamic kinetic resolution (DKR), dynamic kinetic asymmetric transformation (DYKAT), and dynamic thermodynamic resolution (DTR). In-depth discussions of asymmetric synthesis with chiral organolithium compounds, atropisomeric biaryl synthesis, self-regeneration of stereogenicity (SRS), chiral amplification with chiral relays and other commonly used strategies are also provided. Particular emphasis is given to selective introduction, interconversion and translocation of central, axial, planar, and helical chirality. A systematic coverage of stereochemical principles and stereodynamic properties of chiral compounds guides the reader through the book and establishes a conceptual linkage to asymmetric synthesis, molecular devices that resemble the structure and stereomutations of propellers, bevel gears, switches and motors, and topologically chiral assemblies such as catenanes and rotaxanes. Racemization and diastereomerization reactions of numerous chiral compounds are discussed as well as the principles, scope and compatibility of commonly used analytical techniques. Details of analytical methods are provided and discussed as well as topics relating to the design of fascinating topologically chiral assemblies and molecular technomimetic devices in the context of dynamic stereochemistry. Strategies and recent developments that address important synthetic challenges are presented and highlighted with hundreds of examples, applications and detailed mechanisms. This exceptional book includes: - More than 550 figures, schemes and tables illustrating mechanisms of numerous asymmetric reactions and stereomutations of chiral compounds - Technical drawings illustrating the conceptual linkage between macroscopic devices such as turnstiles, ratchets, brakes, bevel gears or knots and molecular analogs - More than 3000 references to encourage further reading and facilitate additional literature research - A comprehensive glossary with stereochemical definitions and terms which facilitate understanding and reinforce learning This book will be of particular interest to undergraduates, graduates and professionals working and researching in the fields of organic synthetic chemistry and analytical chemistry.

Author: American Chemical Society. Committee on Professional Training
Publisher:
ISBN: 9780841227231
Category : Science
Languages : en
Pages : 1700

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Author: Alfred Hassner
Publisher: Elsevier
ISBN: 1483287343
Category : Science
Languages : en
Pages : 462

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Book Description
Synthetically useful organic reactions or reagents are often referred to by the name of the discoverer(s) or developer(s). Older name reactions are described in text books, but more recently developed synthetically useful reactions that may have been associated occasionally with a name are not always well known. For neither of the above are experimental procedures or references easy to find. In this monograph approximately 500 name reactions are included, of which over 200 represent newer name reactions and modern reagents. Each of these reactions are extremely useful for the contemporary organic chemistry researcher in industry or academic institutions. This book provides the information in an easily accessible form. In addition to seminal references and reviews, one or more examples for each name reaction are provided and a complete typical experimental procedure is included, to enable the student or researcher to immediately evaluate reaction conditions. Besides an alphabetical listing of reactions and reagents, cross references permit the organic practitioner to find those name reactions or reagents that enable specific transformations, such as, conversion of amines to nitriles, stereoselective reduction, fluoroalkylation, phenol alkynylation, asymmetric syntheses, allylic alkylation, nucleoside synthesis, cyclopentanation, hydrozirconation, to name a few. Emphasis has been placed on stereoselective and regioselective transformations as well as on enantioselective processes. The listing of reactions and reagents is supported by four indexes.

Author: Qi-Lin Zhou
Publisher: John Wiley & Sons
ISBN: 3527635211
Category : Technology & Engineering
Languages : en
Pages : 670

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Book Description
Catalytic asymmetric synthesis has been one of the most active research areas in chemistry (Nobel Prize in 2001). The development of efficient chiral catalysts plays a crucial role in asymmetric catalysis. Although many chiral ligands/catalysts have been developed in the past decades, the most efficient catalysts are derived from a few core structures, called "privileged chiral catalysts". This ultimate "must have" and long awaited reference for every chemist working in the field of asymmetric catalysis starts with the core structure of the catalysts, explaining why a certain ligand or catalyst is so successful. It describes in detail the history, the basic structural characteristics, and the applications of these "privileged catalysts". This novel presentation provides readers with a much deeper insight into the topic and makes it a must-have for organic chemists, catalytic chemists, chemists working with/on organometallics, chemists in industry, and libraries. From the contents: * BINAP * Bisphosphacycles - From DuPhos and BPE to a Diverse Set of Broadly Applied Ligands * Josiphos Ligands: From Discovery to Technical Applications * Chiral Spiro Ligands * Chiral Bisoxazoline Ligands * PHOX Ligands * Chiral Salen Complexes * BINOL * TADDOLate Ligands * Cinchona Alkaloids * Proline Derivatives

Author: David W Allen
Publisher: Royal Society of Chemistry
ISBN: 178262693X
Category : Science
Languages : en
Pages : 504

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Book Description
Organophosphorus chemistry is a very broad and exciting field, with potential opportunities to the researchers involved in multi-disciplinary areas of scientific endeavour including organic, medicinal, pharmaceutical, agricultural and industrial chemistry. Coverage in this annual review of the literature presents a comprehensive and critical survey of the vast field of study involving organophosphorus compounds. With reviews covering phosphines and phosphonium salts through to tervalent and quinquevalent phosphorus acid derivatives, nucleotides, ylides, and phosphazenes. Since synthetic organic chemists have been motivated to develop eco-friendly methodologies for generating phosphorus-functionalized compounds of potential interest, the Editors have added to the usual content with a timely chapter on the recent developments in green synthetic approaches in organophosphorus chemistry to reflect the current interests in the area. This book continues the series with a timely overview of this interesting and developing field.

Author: Kolio D. Troev
Publisher: Academic Press
ISBN: 0128138351
Category : Science
Languages : en
Pages : 465

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Book Description
Reactivity of P-H Group of Phosphorus Based Compounds bridges the gap between inorganic and organic phosphorus compounds, providing a basis to explore the myriad possibilities for synthesis of novel low and high molecular phosphorus-containing compounds. It covers well-documented reactions in detail, including: tautomerization, oxidation, reduction, alkylation, oxidation coupling, addition reaction to: carbon-carbon multiple bonds, Schiff base, isocyanates, nitriles, epoxides; addition to carbonyl group, Kabachnik- Fields reaction, cross-coupling reaction and more. In an accessible style complete with synthetic routes and figures, the resource then covers the reactivity of multiple P-H group members: phosphines, phosphine oxides, hypophosphorus acid, H-phosphinic acids and polys(alkylene H-phosphonate). This valuable coverage supports the advancement of research and applications in this area for scientists solving a scientific problem or starting a variety of new projects, such as a new reaction for the synthesis of biologically active compounds, new methods of polymer synthesis or a new methodology for polymer modification. - Describes the diverse reactivity of the phosphorus-hydrogen group, perhaps the most powerful in organic chemistry - Includes practical information for the synthesis of catalysts, biologically active substances, flame retardants, advance materials and polymer materials - Offers a visually-accessible guide to important reactions by an internationally recognized chemist