Molecular Rearrangements in Organic Synthesis PDF Download
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Author: Christian M. Rojas
Publisher: John Wiley & Sons
ISBN: 1118939883
Category : Science
Languages : en
Pages : 528
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Book Description
Designed for practitioners of organic synthesis, this book helps chemists understand and take advantage of rearrangement reactions to enhance the synthesis of useful chemical compounds. Provides ready access to the genesis, mechanisms, and synthetic utility of rearrangement reactions Emphasizes strategic synthetic planning and implementation Covers 20 different rearrangement reactions Includes applications for synthesizing compounds useful as natural products, medicinal compounds, functional materials, and physical organic chemistry
Author: Christian M. Rojas
Publisher: John Wiley & Sons
ISBN: 1118939883
Category : Science
Languages : en
Pages : 528
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Book Description
Designed for practitioners of organic synthesis, this book helps chemists understand and take advantage of rearrangement reactions to enhance the synthesis of useful chemical compounds. Provides ready access to the genesis, mechanisms, and synthetic utility of rearrangement reactions Emphasizes strategic synthetic planning and implementation Covers 20 different rearrangement reactions Includes applications for synthesizing compounds useful as natural products, medicinal compounds, functional materials, and physical organic chemistry
Author: Paul De Mayo
Publisher: New York : Interscience Publishers
ISBN:
Category : Chemistry
Languages : en
Pages : 722
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Book Description
Author: Shazia Anjum
Publisher: Elsevier Inc. Chapters
ISBN: 0128084685
Category : Science
Languages : en
Pages : 538
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Book Description
Molecular rearrangements occupy center stage in the development of organic synthesis and, consequently, in the impressive achievements that have resulted in the total synthesis of many complex natural products in the last decades. The purpose of this chapter, in this volume of a book series dedicated to the Studies in Natural Product Chemistry, is to show a set of selected and organized molecular rearrangements based on a personal choice of expertise related to the synthesis of complex bioactive molecules. Our selection addresses [3,3]-sigmatropic rearrangements, which continue to provide excellent opportunities for reaching high chemical diversity, operating in efficient synthetic schemes. [3,3]-Sigmatropic rearrangements, such as the Cope and Claisen rearrangements, are among the most basic and useful transformations in synthetic organic chemistry. This is possibly due to the fact that these rearrangements are efficient methods for the synthesis of quaternary, sterically hindered chiral centers, and for the stereoselective formation of carbon–carbon and carbon–heteroatom bonds. In addition, [3,3]-sigmatropic rearrangements can be easily integrated in, and adapted to, cascade processes as a simple method to prepare complex molecules in atom-efficient reactions. Consequently, in the context of [3,3]-sigmatropic rearrangements, we focus on the transformations of propargylic esters, whose rearrangements, in different experimental conditions, have been largely exploited for the synthesis of interesting key and useful intermediates. The rearrangements can be promoted by protic acids, Lewis acids, and noble metals such as Pt, Au, or Cu salts, or complexes that have recently emerged as the most popular and potent electrophilic activators of alkynes toward a number of nucleophilic agents, under homogeneous conditions.
Author: Paul de Mayo
Publisher: Academic Press
ISBN: 1483218724
Category : Science
Languages : en
Pages : 444
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Book Description
Rearrangements in Ground and Excited States, Volume 2 covers essays on the theoretical approach of rearrangements; the rearrangements involving boron; and the molecular rearrangements of organosilicon compounds. The book also includes essays on the polytopal rearrangement at phosphorus; the rearrangement in coordination complexes; and the reversible thermal intramolecular rearrangements of metal carbonyls. Chemists and people involved in the study of rearrangements will find the book invaluable.
Author: Christian M. Rojas
Publisher: John Wiley & Sons
ISBN: 111834796X
Category : Science
Languages : en
Pages : 774
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Book Description
Designed for practitioners of organic synthesis, this book helps chemists understand and take advantage of rearrangement reactions to enhance the synthesis of useful chemical compounds. Provides ready access to the genesis, mechanisms, and synthetic utility of rearrangement reactions Emphasizes strategic synthetic planning and implementation Covers 20 different rearrangement reactions Includes applications for synthesizing compounds useful as natural products, medicinal compounds, functional materials, and physical organic chemistry
Author: V. K. Ahluwalia
Publisher:
ISBN: 9781842650578
Category : Organic reaction mechanisms
Languages : en
Pages : 609
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Book Description
This work deals with mechanisms of a large number of named and unnamed reactions, and also mechanisms of various types of molecular rearrangements. Different types of oxidations, reductions along with appropriate mechanism, and special reagents in organic synthesis including boron, aluminium, silicon, phosphorus, sulphur, selenium and transition metal reagents are discussed. Use of organometallic compounds and reaction intermediates are addressed. Organic reaction mechanisms of different types of aliphatic nucleophilic substitution reactions are discussed to meet the requirements of undergraduate and postgraduate students.
Author: Michael James Mcglinchey
Publisher: World Scientific
ISBN: 9811249679
Category : Science
Languages : en
Pages : 293
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Book Description
The elucidation of reaction mechanisms generally requires the carefully designed control of molecular symmetry to distinguish between the many possible reaction pathways. Making and Breaking Symmetry in Chemistry emphasises the crucial role played by symmetry in modern synthetic chemistry. After discussion of a number of famous classical experiments, the advances brought about by the introduction of new techniques, in particular NMR spectroscopy, are exemplified in numerous cases taken from the recent literature. Experimental verification of many of the predictions made in Woodward and Hoffmann's explication of the Conservation of Orbital Symmetry are described. Applications that involve the breaking of molecular symmetry to resolve these and other mechanistic problems in organic, inorganic and organometallic chemistry are presented in the first sections of the book, together with many examples of the detection of hitherto hidden rearrangement processes.Subsequently, under the aegis of making molecular symmetry, examples of the preparation of highly symmetrical molecules found in the organic, organometallic or inorganic domains are discussed. These include Platonic hydrocarbons or boranes, tetrahedranes, cubanes, prismanes, dodecahedrane, fullerene fragments such as corannulene, sumanene or semibuckminsterfullerene, and other systems of unusual geometries or bonding characteristics (Möbius strips, molecular brakes and gears, Chauvin's carbomers, Fitjer's rotanes, persubstituted rings, metal-metal multiple bonds, etc.). The text also contains vignettes of many of the scientists who made these major advances, as well as short sections that briefly summarise key features of important topics that underpin the more descriptive material. These include some aspects of chirality, NMR spectroscopy, and the use of isotopic substitution to break molecular symmetry. A brief appendix on point group symmetry and nomenclature is also helpfully provided.
Author: Michael B Smith
Publisher: Academic Press
ISBN: 0128008075
Category : Science
Languages : en
Pages : 1106
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Book Description
Organic Synthesis, Fourth Edition, provides a reaction-based approach to this important branch of organic chemistry. Updated and accessible, this eagerly-awaited revision offers a comprehensive foundation for graduate students coming from disparate backgrounds and knowledge levels, to provide them with critical working knowledge of basic reactions, stereochemistry and conformational principles. This reliable resource uniquely incorporates molecular modeling content, problems, and visualizations, and includes reaction examples and homework problems drawn from the latest in the current literature. In the Fourth Edition, the organization of the book has been improved to better serve students and professors and accommodate important updates in the field. The first chapter reviews basic retrosynthesis, conformations and stereochemistry. The next three chapters provide an introduction to and a review of functional group exchange reactions; these are followed by chapters reviewing protecting groups, oxidation and reduction reactions and reagents, hydroboration, selectivity in reactions. A separate chapter discusses strategies of organic synthesis, and he book then delves deeper in teaching the reactions required to actually complete a synthesis. Carbon-carbon bond formation reactions using both nucleophilic carbon reactions are presented, and then electrophilic carbon reactions, followed by pericyclic reactions and radical and carbene reactions. The important organometallic reactions have been consolidated into a single chapter. Finally, the chapter on combinatorial chemistry has been removed from the strategies chapter and placed in a separate chapter, along with valuable and forward-looking content on green organic chemistry, process chemistry and continuous flow chemistry. Throughout the text, Organic Synthesis, Fourth Edition utilizes Spartan-generated molecular models, class tested content, and useful pedagogical features to aid student study and retention, including Chapter Review Questions, and Homework Problems. PowerPoint© presentations and answer keys are also available online to support instructors. Fully revised and updated throughout, and teorganized into 19 chapters for a more cogent and versatile presentation of concepts Includes reaction examples taken from literature research reported between 2010-2015 Features new full-color art and new chapter content on process chemistry and green organic chemistry Offers valuable study and teaching tools, including Chapter Review Questions and Homework Problems for students; Lecture presentations and other useful material for qualified course instructors
Author: Paul de Mayo
Publisher: Academic Press
ISBN: 1483218716
Category : Science
Languages : en
Pages : 496
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Book Description
Rearrangement in ground and excited states, Volume 1 covers essays on the rearrangements of carbocations; gas-phase ion rearrangements; and rearrangements of carbenes and nitrenes. The book also includes essays on the free-radical rearrangements; hypothetical biradical pathways in thermal unimolecular rearrangements; and rearrangements in carbanions. Chemists and people involved in the study of rearrangements will find the book invaluable.
Author: Reinhard Bruckner
Publisher: Springer Science & Business Media
ISBN: 3642036503
Category : Science
Languages : en
Pages : 873
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Book Description
This English edition of a best-selling and award-winning German textbook Reaction Mechanisms: Organic Reactions · Stereochemistry · Modern Synthetic Methods is aimed at those who desire to learn organic chemistry through an approach that is facile to understand and easily committed to memory. Michael Harmata, Norman Rabjohn Distinguished Professor of Organic Chemistry (University of Missouri) surveyed the accuracy of the translation, made certain contributions, and above all adapted its rationalizations to those prevalent in the organic chemistry community in the English-speaking world. Throughout the book fundamental and advanced reaction mechanisms are presented with meticulous precision. The systematic use of red "electron-pushing arrows" allows students to follow each transformation elementary step by elementary step. Mechanisms are not only presented in the traditional contexts of rate laws and substituent effects but, whenever possible, are illustrated using practical, useful and state-of-the-art reactions. The abundance of stereoselective reactions included in the treatise makes the reader familiar with key concepts of stereochemistry. The fundamental topics of the book address the needs of upper-level undergraduate students, while its advanced sections are intended for graduate-level audiences. Accordingly, this book is an essential learning tool for students and a unique addition to the reference desk of practicing organic chemists, who as life-long learners desire to keep abreast of both fundamental and applied aspects of our science. In addition, it will well serve ambitious students in chemistry-related fields such as biochemistry, medicinal chemistry and pharmaceutical chemistry. From the reviews: "Professor Bruckner has further refined his already masterful synthetic organic chemistry classic; the additions are seamless and the text retains the magnificent clarity, rigour and precision which were the hallmark of previous editions. The strength of the book stems from Professor Bruckner’s ability to provide lucid explanations based on a deep understanding of physical organic chemistry and to limit discussion to very carefully selected reaction classes illuminated by exquisitely pertinent examples, often from the recent literature. The panoply of organic synthesis is analysed and dissected according to fundamental structural, orbital, kinetic and thermodynamic principles with an effortless coherence that yields great insight and never over-simplifies. The perfect source text for advanced Undergraduate and Masters/PhD students who want to understand, in depth, the art of synthesis ." Alan C. Spivey, Imperial College London "Bruckner’s ‘Organic Mechanisms’ accurately reflects the way practicing organic chemists think and speak about organic reactions. The figures are beautifully drawn and show the way organic chemists graphically depict reactions. It uses a combination of basic valence bond pictures with more sophisticated molecular orbital treatments. It handles mechanisms both from the "electron pushing perspective" and from a kinetic and energetic view. The book will be very useful to new US graduate students and will help bring them to the level of sophistication needed to be serious researchers in organic chemistry." Charles P. Casey, University of Wisconsin-Madison "This is an excellent advanced organic chemistry textbook that provides a key resource for students and teachers alike." Mark Rizzacasa, University of Melbourne, Australia.
