Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Chiral Auxiliaries And Ligands In Asymmetric Synthesis
Download Chiral Auxiliaries And Ligands In Asymmetric Synthesis full books in PDF, epub, and Kindle. Read online Chiral Auxiliaries And Ligands In Asymmetric Synthesis ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Chiral Auxiliaries and Ligands in Asymmetric Synthesis by : J. Seyden-Penne
Download or read book Chiral Auxiliaries and Ligands in Asymmetric Synthesis written by J. Seyden-Penne and published by Wiley-Interscience. This book was released on 1995-10-23 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of Contents Preface Abbreviations Introduction 1 1 Enantiomerically Pure Chiral Auxiliaries 43 2 Chiral Reagents 87 3 Chiral Catalysis and Catalysts Bearing Chiral Ligands 117 4 Asymmetric Deprotonations and Protonations 143 5 Alkylations and Related Reactions 157 6 Additions to C=O and C=N Double Bonds 209 7 Additions to Carbon-Carbon Double Bonds 367 8 Additions to Double Bonds Bearing Heteroatoms. Oxidations of Sulfides and Selenides 503 9 Cycloadditions 513 10 Sigmatropic Rearrangements 593 11 Transition Metal Catalyzed Reactions 619 References 637 Index 707.
Book Synopsis The Importance of Chiral Auxiliaries in Asymmetric Synthesis and Work on a Topologically Chiral Ligand by : Charles P. Connell
Download or read book The Importance of Chiral Auxiliaries in Asymmetric Synthesis and Work on a Topologically Chiral Ligand written by Charles P. Connell and published by . This book was released on 1994 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design, Synthesis and Evaluation of Chiral Auxiliaries, Ligands and Catalysts for Asymmetric Synthesis by : Arun A. Narine
Download or read book Design, Synthesis and Evaluation of Chiral Auxiliaries, Ligands and Catalysts for Asymmetric Synthesis written by Arun A. Narine and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Task definition theoretically is one of the main components of self-regulated learning because one's representation of the task directs cognitive activities such as setting goals, creating plans, and enacting those plans to create task products. To date, little research has examined students' representations of tasks or how those representations change over time. In this dissertation I characterize students' initial representations of tasks and explore factors influencing how they refine these representations over time. Fifty-eight undergraduate students taking an undergraduate instructional psychology course participated in a semester-long examination of how students constructed and refined their task understanding. The data source was a studying portfolio consisting of detailed descriptions about and reflections on strategic processes they used to complete two main writing assignments in the course: a think paper and a design project. Analyses of these data suggest students' representations of tasks varied across two dimensions: breadth and depth. In terms of breadth, students selected information from the design project description of different grain sizes. Students with greater depth not only searched and selected information from the task, but they actively assembled elements of the task and monitored how those components fit with one another. Most students set goals and created plans; however, not all goals or plans were framed in light of criteria that would theoretically foster self-regulated learning. To revise task understanding, students metacognitively monitored their processes and outcomes of learning activities, which updated information about task, cognitive, and motivational conditions. This additional information afforded students opportunity to reassess the discrepancy between the initial state and the goal state to determine next steps to reach task goals. Although students may have recognized the need to change their approaches, they often failed to engage in effective metacognitive control to adapt approaches to learning. I interpret this to indicate that control processes require not only the skill for enacting these processes but also the motivational catalyst to sustain these efforts when competing factors are present. Future research should strive to create new measures for task understanding, and to track how students' perceptions and representations of tasks influence self-regulated learning and achievement.
Book Synopsis Chiral Sulfur Ligands by : Hélène Pellissier
Download or read book Chiral Sulfur Ligands written by Hélène Pellissier and published by Royal Society of Chemistry. This book was released on 2009 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this book is to show the high potential of chiral sulfur-containing ligands to promote numerous asymmetric catalytic transformations. These ligands can now be recognised as real competitors to the more usual phosphorus- or nitrogen-containing ligands.
Book Synopsis Chiral Reagents for Asymmetric Synthesis by : Leo A. Paquette
Download or read book Chiral Reagents for Asymmetric Synthesis written by Leo A. Paquette and published by John Wiley & Sons. This book was released on 2003-08-01 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Derived from the renowned, Encyclopedia of Reagents for Organic Synthesis (EROS), the related editors have created a new handbook which focuses on chiral reagents used in asymmetric synthesis and is designed for the chemist at the bench. This new handbook follows the same format as the Encyclopedia, including an introduction and an alphabetical arrangement of the reagents. As chiral reagents are the key for the successful asymmetric synthesis, choosing the right reagents is essential, in this handy reference the editors give details on how to prepare, store and use the reagents as well as providing key reactions to demonstrate where reagents have been successfully used. Comprehensive information on 226 reagents Covers 64 reagents which were not included in EROS All information in one easy to use volume – at an affordable price All reagents included will be added to e-EROS – please visit the site where you can gain access to over 50,000 reactions and 3,800 of the most frequently consulted reagents. Visit: www.interscience.wiley.com/eros
Book Synopsis Chiral Ligands by : Montserrat Diéguez
Download or read book Chiral Ligands written by Montserrat Diéguez and published by CRC Press. This book was released on 2021-05-13 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many new drugs on the market are chiral compounds, that is, they can exist in two non-superimposable mirror-image forms. Asymmetric catalysis encompasses a large variety of processes for obtaining such compounds. The performance of the catalyst in those processes largely depends on the ligand that makes up the catalyst. This book describes the most relevant ligand libraries for some key processes, including an overview of the state of art and the key mechanistic aspects that favor a high catalytic performance. Key Features: The book presents historical content from the time of discovery for each family of ligands. Provides a description of the synthetic route and the ligand library's application in various catalytic asymmetric reactions Suitable as supplementary reading for courses targeting the design, synthesis and application of chiral catalysts, asymmetric catalysis and sustainable production Edited by a distinguished scientist in the field, the book has a diverse audience including research groups in homogeneous catalysis, particularly asymmetric transformations
Book Synopsis Principles and Applications of Asymmetric Synthesis by : Guo-Qiang Lin
Download or read book Principles and Applications of Asymmetric Synthesis written by Guo-Qiang Lin and published by John Wiley & Sons. This book was released on 2001-02-21 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asymmetric synthesis remains a challenge to practicing scientists as the need for enantiomerically pure or enriched compounds continues to increase. Over the last decade, a large amount of literature has been published in this field. Principles and Applications of Asymmetric Synthesis consolidates and evaluates the most useful methodologies into a one-volume resource for the convenience of practicing scientists and students. Authored by internationally renowned scientists in the field, this reliable reference covers more than 450 reactions and includes important stoichiometric as well as catalytic asymmetric reactions. The first chapter reviews the basic principles, common nomenclature, and analytical methods, and the remainder of the book is organized according to reaction type. The text examines such topics as: Carbon-carbon bond formations involving carbonyls, enamines, imines, and enolates Asymmetric C-O bond formations including epoxidation, dihydroxylation, and aminohydroxylation Asymmetric synthesis using the Diels-Alder reaction and other cyclizations Applications to the total synthesis of natural products Use of enzymes in asymmetric synthesis Practicing chemists in the pharmaceutical, fine chemical, and agricultural professions as well as graduate students will find that Principles and Applications of Asymmetric Synthesis affords comprehensive and current coverage.
Book Synopsis Privileged Chiral Ligands and Catalysts by : Qi-Lin Zhou
Download or read book Privileged Chiral Ligands and Catalysts written by Qi-Lin Zhou and published by John Wiley & Sons. This book was released on 2011-02-10 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Chiral Building Blocks in Asymmetric Synthesis by : Jacek Wojaczynski
Download or read book Chiral Building Blocks in Asymmetric Synthesis written by Jacek Wojaczynski and published by John Wiley & Sons. This book was released on 2022-08-05 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chiral Building Blocks in Asymmetric Synthesis A comprehensive introduction to the important classes of chiral building blocks Chirality — the asymmetric quality found in certain chemical compounds — plays an essential role in our world: chiral compounds can be found in biology, pharmaceutical compounds, agrochemicals, and fragrances. The stereoselective preparation of these complex molecular constructions constitutes a challenge. To this end, modern asymmetric synthesis utilizes a variety of valuable and efficient reagents employed as chiral auxiliaries, metal complexes and organocatalysts in stereoselective catalysis, and enantiopure reactants termed as chiral building blocks. In Chiral Building Blocks in Asymmetric Synthesis, the achievements in the fields of preparation of and applications of chiral blocks are presented. In doing so, the book comprehensively discusses the important classes of these reactants as the key for the asymmetric synthesis of chiral molecules. As such, it is an indispensable resource about synthetic methods, as well as possible modifications and transformations of important classes of chiral compounds. It also highlights the importance of their use as reactants and auxiliaries in the preparation of more sophisticated molecules or supramolecular systems. In Chiral Building Blocks in Asymmetric Synthesis readers will also find: Organization according to the most important compound classes — e.g. amino acids, BINOL and its derivatives, terpenes, and others — with an emphasis on synthesis and application A focus on the use of chiral building blocks for the preparation of bioactive compounds and supramolecular assemblies Chiral Building Blocks in Asymmetric Synthesis is a useful reference for organic chemists, catalytic chemists, chemists in industry, medicinal chemists, pharmaceutical chemists, and the libraries that support them.
Book Synopsis Axially Chiral Compounds by : Bin Tan
Download or read book Axially Chiral Compounds written by Bin Tan and published by John Wiley & Sons. This book was released on 2021-11-22 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Axially Chiral Compounds Explore this comprehensive and current volume summarizing the characteristics, synthesis, and applications of axial chirality Appearing widely in natural products, biologically active molecules, asymmetric chemistry, and material science, axially chiral motifs constitute the core backbones of the majority of chiral ligands and organocatalysts in asymmetric catalysis. In a new work of particular relevance to synthetic chemists, Axially Chiral Compounds: Asymmetric Synthesis and Applications delivers a clearly structured and authoritative volume covering the classification, characteristics, synthesis, and applications of axial chirality. A must read for every synthetic chemist practicing today, the book follows the development history, research status, and applications of axial chirality. An introductory chapter familiarizes the reader with foundational material before the distinguished authors describe the different classes and the synthesis of axial chiral compounds used in asymmetric synthesis. The book concludes with a focus on the applications of chiral ligands, chiral catalysts, and materials. Readers will also benefit from the inclusion of: A thorough introduction to asymmetric synthesis, including biaryls atropisomers, heterobiaryls atropisomers, and non-biaryls atropisomers Explorations of chiral allene, spiro skeletons, and natural products Practical discussions of asymmetric transformation, chiral ligands, and chiral catalysts An examination of miscellaneous applications of axially chiral compounds Perfect for organic chemists, chemists working with or on organometallics, catalytic chemists, and materials scientists, Axially Chiral Compounds: Asymmetric Synthesis and Applications will also earn a place in the libraries of natural products chemists who seek a one-stop reference for compounds exhibiting axial chirality.
Author :Arun A. (Arun Anil) Narine Publisher :Library and Archives Canada = Bibliothèque et Archives Canada ISBN 13 : Total Pages :590 pages Book Rating :4.:/5 (243 download)
Book Synopsis Design, Synthesis and Evaluation of Chiral Auxiliaries, Ligands and Catalysts for Asymmetric Synthesis [microform] by : Arun A. (Arun Anil) Narine
Download or read book Design, Synthesis and Evaluation of Chiral Auxiliaries, Ligands and Catalysts for Asymmetric Synthesis [microform] written by Arun A. (Arun Anil) Narine and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2004 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Novel Chiral Wide Bite Angle Ligands for Asymmetric Catalysis by : Christine Fee Czauderna
Download or read book Novel Chiral Wide Bite Angle Ligands for Asymmetric Catalysis written by Christine Fee Czauderna and published by . This book was released on 2013 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Achiral wide bite angle ligands have been shown to be highly active and to induce excellent chemo- and regioselectivities in many homogeneously catalyzed reactions. However, only a few examples of chiral wide bite angle ligands are known so far. A diphenyl ether backbone was selected to allow maximum synthetic versatility and potential for a modular approach to design and synthesize such chiral diphosphorus ligands. Three synthetic strategies have been explored in this thesis: i) introduction of chiral substituents in the ligand backbone, ii) the use of P-stereogenic donor atoms and iii) the synthesis of chiral mixed-donor ligands bearing chiral auxiliary groups on the phosphorus atoms. Functionalization of the 3,3'-positions of 2,2'-bis(diphenylphosphino)diphenyl ether by carboxylic acid or ether auxiliaries was achieved via straightforward four-step routes to generate a library of ligands that were tested in various catalytic reactions. In the Pd-catalyzed asymmetric allylic alkylation of l,3-diphenyl-2-propenyl acetate and cyclohexyl-2-enyl acetate with dimethyl malonate the enantioselectivity was found to depend on the size of the chiral auxiliary introduced within the diphenyl ether backbone and its proximity to the phosphorus donor groups and hence to the active metal centre. Two types of mixed donor bidentate diphosphorus ligands based on the diphenylether backbone have been established, i.e. phosphine-phosphite and phosphine-phosphonite derivatives. A small ligand library bearing different chiral auxiliaries was accomplished via straightforward syntheses that enable derivatization of the respective phosphite and phosphonite moieties in the final step. In the Rh-catalysed hydrogenation of several benchmark substrates high conversion and moderate to high enantioselectivities (up to 97% for dimethyl itaconate) were obtained. The enantioselectivity was influenced by the size of the ortho-substituent on the chiral auxiliary group of the phosphite or phosphonite fragment. Two modular synthetic approaches for the preparation of novel wide bite angle diphosphine ligands containing stereogenic P-atoms have been developed. Both protocols involved diphenylether as backbone and the chiral ephedrine based precursor (2R[subscript(P)],4S[subscript(C)],5R[subscript(C)])-oxazaphospholidine borane as initial auxiliary to induce chirality at phosphorus. Various novel diphosphines were isolated as highly enantioenriched compounds with dr-ratios up to 95:5.
Book Synopsis Handbook of Chiral Chemicals by : David Ager
Download or read book Handbook of Chiral Chemicals written by David Ager and published by CRC Press. This book was released on 2005-10-21 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: As pharmaceutical companies look to develop single enantiomers as drug candidates, chemists are increasingly faced with the problems associated with this subclass of organic synthesis. "The Handbook of Chiral Chemicals, Second Edition" highlights the problems associated with the production of chiral compounds on a commercial scale. The handbook fir
Book Synopsis Green Approaches To Asymmetric Catalytic Synthesis by : Angela Patti
Download or read book Green Approaches To Asymmetric Catalytic Synthesis written by Angela Patti and published by Springer Science & Business Media. This book was released on 2011-08-22 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, chirality is widely accepted as an important factor in molecular recognition processes and the biological activity of many pharmaceutical drugs and agrochemicals; this is confirmed by the continuous need for synthetic methods which lead to single or enriched enantiomers of such compounds. By presenting a review of the various and more recently developed approaches for both metal-transition and organocatalysis, this volume describes the development of “greener” asymmetric reactions which preserve stereoselectivity. The author summarizes the impressive amount of research that has been gathered within this field into three chapters focusing on: i)the search of alternative catalysts, ii) alternative solvents, and iii) alternative synthetic strategies and processes. For each topic, the fundamentals and some valuable applications are discussed.
Book Synopsis Compendium of Chiral Auxiliary Applications, Three-Volume Set by : Gregory Roos
Download or read book Compendium of Chiral Auxiliary Applications, Three-Volume Set written by Gregory Roos and published by Academic Press. This book was released on 2002-01-04 with total page 1423 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Compendium is a detailed compilation of chiral auxiliaries which are used in the field of organic chemistry to direct "asymmetric synthesis". A molecule is called chiral because it can have two "enantiomers" -- like left and right-handed molecules. An enantiomer is either of two molecules of the same chemical composition that are mirror images of each other but not identical. A "chiral auxiliary" is an aid / auxiliary used to specifically produce either the left or right enantiomer of the chosen molecule, as desired. In this comprehesive reference source, industrial chemists can make informed selections of an auxiliary for a specific application. It is fully cross-referenced to enable the comparative selection of auxiliaries. The work includes over 13,000 auxiliary reaction applications with complete reaction details of the synthetic routes, reagents, and primary literature references. Key Features * This remarkable major reference work is the first such compilation and represents the only total source for the diverse applications of auxiliaries * Thoroughly cross-referenced to enable comparative
Book Synopsis Asymmetric Cyclopropanation Via Catalysts Incorporating the 1,4-diol Ligands and the Newly Designed Dioxaborolane by : Feng Ye
Download or read book Asymmetric Cyclopropanation Via Catalysts Incorporating the 1,4-diol Ligands and the Newly Designed Dioxaborolane written by Feng Ye and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of new methodology for the asymmetric synthesis of chiral organic compounds is a major focus in modem organic chemistry. The use of chiral catalysts is replacing chiral auxiliaries as a new tool for synthetic chemists. An efficient chiral catalyst allows for large quantities of optically active product to be obtained on use of relatively small amount of enantiopure material, without the need for the removal and recovery of a chiral auxiliary. Furthermore, the most practical catalytic methods utilize an inexpensive and readily available chiral ligand that can provide high and predictable enantioselectivity across a wide range of substrates. In our project, two type of versatile, upgraded chiral ligands have been designed and synthesized. Their application in Simmons-Smith type cyclopropanation is investigated, and the pleasing results suggest that they are the potential catalytic enantioselective candidates to build C-C bonds.
Book Synopsis Key Chiral Auxiliary Applications by : Gregory Roos
Download or read book Key Chiral Auxiliary Applications written by Gregory Roos and published by Academic Press. This book was released on 2014-01-20 with total page 1271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Key Chiral Auxiliary Applications, Second Edition is a detailed compilation of chiral auxiliary applications organized by type of transformation. Continuing from the most important and relevant auxiliaries described in its predecessor, the three-volume set Compendium of Chiral Auxiliary Applications (2001), as well as advances in the field, the book provides a vital and timely resource for chemists in the field. Each reaction class includes a series of tables and graphical abstracts of real reactions from the literature and patents to enable easy review and comparison of results. This anticipated edition is based on a screening of nearly 40,000 auxiliary reaction applications, with details supplied for the more than 13,000 selected representative entries: synthetic route, reagents, yields, diastereomeric/enantiomeric excesses, and characterization data. Updated and streamlined with more than 60% new material, Key Chiral Auxiliary Applications provides valuable guidance and reliable content for selecting the best auxiliary for a specific asymmetric synthetic transformation. Provides a comprehensive compilation based on nearly 40,000 diverse applications of chiral auxiliaries for selecting the best synthetic route to optically pure compounds Contains over 60% new material with 13,000+ auxiliary applications categorized by reaction type, with reaction details and chemical and optical yields in one unique resource
![Download Design, Synthesis and Evaluation of Chiral Auxiliaries, Ligands and Catalysts for Asymmetric Synthesis [microform] PDF Online Free](https://books.google.com/books/content/images/frontcover/77SCPgAACAAJ?fife=w200-h370)
