Download or read book Boron bridged Bis oxazolines and Their Use in Copper catalyzed Reactions written by Aurélie Toussaint and published by Cuvillier Verlag. This book was released on 2008 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis of Functionalized Organoboron Compounds Through Copper I Catalysis written by Koji Kubota and published by Springer. This book was released on 2017-06-27 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes state-of-the-art borylation chemistry using copper(I) catalysis. Enantioselective reactions are included to afford a variety of functionalized, complex organoboronate esters, which will find wide application in asymmetric synthesis, drug discovery, and material science. Organoboron compounds are recognized as useful reagents in organic synthesis; therefore, great effort has been devoted to the development of a simple, mild, and efficient method for their preparation in the past several years. However, the synthesis of functionalized organoboron compounds remains a challenging issue because known reactions often require the use of highly reactive organometallic carbon nucleophiles. This book focuses on conceptually new, formal nucleophilic copper(I)-catalyzed borylation reactions with diboron compounds that show high selectivity and excellent functional group compatibility. Theoretical studies based on density functional theory calculations to understand the reaction mechanisms have also been described. Advances in this novel borylation chemistry will allow the rapid and efficient synthesis of complex molecules with potentially interesting properties in combination with the boron functionalization process.

Download or read book Organic Reaction Mechanisms 2008 written by A. C. Knipe and published by John Wiley & Sons. This book was released on 2011-07-05 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the 44th in this classical series. In every volume relevant reaction mechanisms are featured in chapters entitled: Reaction of Aldehydes and Ketones and their Derivatives Reactions of Carboxylic, Phosphoric, and Sulfonic Acids and their Derivatives Oxidation and Reduction Carbenes and Nitrenes Nucleophilic Aromatic Substitution Electrophilic Aromatic Substitution Carbocations Nucleophilic Aliphatic Substitution Carbanions and Electrophilic Aliphatic Substitution Elimination Reactions Addition Reactions: Polar Addition Addition Reactions: Cycloadditions Molecular Rearrangements An experienced team of authors is compiling these reviews every year, so that the reader can rely on a continuing quality of selection and presentation. As a new service to the reader all reaction mechanisms leading to stereospecific products are highlighted. This reflects the needs of the organic synthetic community with leads to chiral reactions. Detailed author and subject indexes help the reader to find the information they are looking for. As a new service to the reader all mechanisms featuring 'Enantiospecific and diastereospecific' reactions are highlighted. This reflects the interest of synthetic organic chemists in such reactions and the pharmaceutical role of chiral molecules.

Download or read book Progress in Heterocyclic Chemistry written by Gordon W. Gribble and published by Elsevier. This book was released on 2009 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Heterocyclic Chemistry (PHC), is an annual review series commissioned by the International Society of Heterocyclic Chemistry (ISHC). Volumes in the series contain both highlights of the previous year's literature on heterocyclic chemistry and articles on new developing topics of particular interest to heterocyclic chemists. The highlight chapters in Volume 21 are all written by leading researchers in their field and these chapters constitute a systematic survey of the important original material reported in the literature of heterocyclic chemistry in 2008. Additional articles in this volume review 'Biocatalytic approaches to chiral heterocycles' and 'Ring-expanded ('fat') purines and their nucleoside/nucleotide analogues as broad-spectrum therapeutics'. As with previous volumes in the series, Volume 21 will enable academic and industrial chemists, and advanced students, to keep abreast of developments in heterocyclic chemistry in a convenient way. CONTENTS Biocatalytic approaches to chiral heterocycles (Steven J. Collier, Michael A. K. Vogel, Brian J. Wong and Naga K. Modukuru); Ring-expanded ('fat') purines and their nucleoside/nucleotide analogues as broad-spectrum therapeutics (Ramachandra S. Hosmane); Three-membered ring systems (Stephen C. Bergmeier and David J. Lapinsky); Four-membered ring systems (Benito Alcaide and Pedro Almendros); Five-membered ring systems: Thiophenes and Se/Te analogues (Tomasz Janosik and Jan Bergman); pyrroles and benzo analogs (Jonathon S. Russel, Erin T. Pelkey and Sarah J. P. Yoon-Miller); Furans and benzofurans (Xue-Long Hou, Zhen Yang, Kap-Sun Yeung, Henry N.C. Wong); With more than one N atom (Larry Yet); With N and S (Se) atoms (Yong-Jin Wu and Bingwei V. Yang); With O & S (Se, Te) atoms (R. Alan Aitken); With O & N atoms (Stefano Cicchi, Franca M. Cordero, Donatella Giomi); Six-membered ring systems: Pyridine and benzo derivatives (Darrin W. Hopper, Aimee L. Crombie, and Jeremy J. Clemens, and Soojin Kwon); Diazines and benzo derivatives (Amelia Manlove and Michael P. Groziak); Triazines, tetrazines and fused ring polyaza systems (2007) (Dmitry N. Kozhevnikov and Valery N. Kozhevnikov); Triazines, tetrazines and fused ring polyaza systems (2008) (Dmitry N. Kozhevnikov and Valery N. Kozhevnikov); Six-membered ring systems: With O and/or S atoms (John D. Hepworth and B. Mark Heron); Seven-membered rings (Jason A. Smith, Peter P. Molesworth and John H. Ryan); Eight-membered and larger rings (George R. Newkome); Index.

Download or read book Applications of Boron in Iridium Copper and Nickel Catalysis Synthesis and Design of Gene Expression Dependent CO Releasing Molecules written by Robert Tobolowsky and published by . This book was released on 2018 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method is reported for synthesis of synthetically-valuable borylated pyridines via a Lewis acid promoted C-H activation approach. The transformation involves BF3 or BH3 Lewis-acid precomplexation followed by Ir-catalyzed borylation. The method's development was guided by computational studies, culminating in the development of a reaction with several advantages over existing methods, including enhanced reactivity, improved regioselectivity, novel formation of trifluoroborate salts and an operationally simple purification procedure. During the reaction discovery process, we also devised a convenient and rapid synthesis of isotopically enriched 10B-pinacolborane, which was used to probe the reaction mechanism. The synthesis and screening of various -base ligands for use in a copper-promoted coupling reaction of alcohols and vinyl boronates are also highlighted. While alkenes and alkynes are frequently used as -bond ligands in transition-metal promoted reactions, allenes have long been underutilized for this purpose despite possessing excellent -bond donor characteristics. Several alkynes and allenes were synthesized and tested as -bond ligands in a copper-mediated oxidative vinyl ether synthesis. Cyclonona-1,2-diene was identified as an ideal allene additive for the reaction. Next, building upon our previous work on palladium-catalyzed oxidative couplings of vinyl boronates, we describe our efforts towards translating this chemistry to a nickel-catalyzed manifold. Central to the success of this new method was the serendipitous discovery that nitroarenes act as a terminal oxidant for nickel, enabling the synthesis of biaryls and butadienes. To the best of our knowledge, this is the first example of nitroarenes used as oxidants in a nickel-catalyzed coupling reaction. The final part of this work chronicles the design and synthesis of a new class of carbon-monoxide releasing molecules. While carbon monoxide is a pervasive environmental toxin, it's also an endogenously-produced, essential signaling molecule in all vertebrates. In order to better study the physiological effects of CO, we synthesized molecules which are activated by the presence of genetically programmable -galactosidase enzyme. This chapter represents an important first step towards the realization of a useful biochemical tool and perhaps even a unique therapeutic compound.

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artificial Metalloenzymes and MetalloDNAzymes in Catalysis written by Montserrat Diéguez and published by John Wiley & Sons. This book was released on 2018-02-21 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important reference for researchers in the field of metal-enzyme hybrid catalysis Artificial Metalloenzymes and MetalloDNAzymes in Catalysis offers a comprehensive review of the most current strategies, developed over recent decades, for the design, synthesis, and optimization of these hybrid catalysts as well as material about their application. The contributors—noted experts in the field—present information on the preparation, characterization, and optimization of artificial metalloenzymes in a timely and authoritative manner. The authors present a thorough examination of this interesting new platform for catalysis that combines the excellent selective recognition/binding properties of enzymes with transition metal catalysts. The text includes information on the various applications of metal-enzyme hybrid catalysts for novel reactions, offers insights into the latest advances in the field, and contains an informative perspective on the future: Explores the development of artificial metalloenzymes, the modern and strongly evolving research field on the verge of industrial application Contains a comprehensive reference to the research area of metal-enzyme hybrid catalysis that has experienced tremendous growth in recent years Includes contributions from leading researchers in the field Shows how this new catalysis combines the selective recognition/binding properties of enzymes with transition metal catalysts Written for catalytic chemists, bioinorganic chemists, biochemists, and organic chemists, Artificial Metalloenzymes and MetalloDNAzymes in Catalysis offers a unique reference to the fundamentals, concepts, applications, and the most recent developments for more efficient and sustainable synthesis.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chiral Lewis Acids in Organic Synthesis written by Jacek Mlynarski and published by John Wiley & Sons. This book was released on 2017-10-23 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete overview covering the application of metal-based chiral Lewis acids from all parts of the periodic table, the Author emphasizes the most recent contributions to the field as well as prominent direction of development. The book discusses the design of chiral complexes as well as a wide spectrum of reactions promoted by various chiral Lewis acids, including water-compatible acids as well as the most important applications in the chemical and pharmaceutical industries. A must-have for catalytic and organic chemists working in the field, both in academia and industry, as well as pharmaceutical and medicinal chemists.

Download or read book Comprehensive Coordination Chemistry Middle transition elements written by Geoffrey Wilkinson and published by . This book was released on 1987 with total page 1428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rhodium Catalyzed Hydroformylation written by Piet W.N.M. van Leeuwen and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade there have been numerous advances in the area of rhodium-catalyzed hydroformylation, such as highly selective catalysts of industrial importance, new insights into mechanisms of the reaction, very selective asymmetric catalysts, in situ characterization and application to organic synthesis. The views on hydroformylation which still prevail in the current textbooks have become obsolete in several respects. Therefore, it was felt timely to collect these advances in a book. The book contains a series of chapters discussing several rhodium systems arranged according to ligand type, including asymmetric ligands, a chapter on applications in organic chemistry, a chapter on modern processes and separations, and a chapter on catalyst preparation and laboratory techniques. This book concentrates on highlights, rather than a concise review mentioning all articles in just one line. The book aims at an audience of advanced students, experts in the field, and scientists from related fields. The didactic approach also makes it useful as a guide for an advanced course.

Download or read book N Heterocyclic Carbenes in Transition Metal Catalysis written by Frank Glorius and published by Springer. This book was released on 2007-02-05 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book leading experts have surveyed major areas of application of NHC metal complexes in catalysis. The authors have placed a special focus on nickel- and palladium-catalyzed reactions, on applications in metathesis reactions, on oxidation reactions and on the use of chiral NHC-based catalysts. This compilation is rounded out by an introductory chapter and a chapter dealing with synthetic routes to NHC metal complexes.

Download or read book Comprehensive Coordination Chemistry II written by J. A. McCleverty and published by Newnes. This book was released on 2003-12-03 with total page 11845 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Coordination Chemistry II (CCC II) is the sequel to what has become a classic in the field, Comprehensive Coordination Chemistry, published in 1987. CCC II builds on the first and surveys new developments authoritatively in over 200 newly comissioned chapters, with an emphasis on current trends in biology, materials science and other areas of contemporary scientific interest.

Download or read book Chiral Ferrocenes in Asymmetric Catalysis written by Li-Xin Dai and published by John Wiley & Sons. This book was released on 2010-02-01 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book meets the long-felt need for a reference on ferrocenes with the focus on catalysis. It provides a thorough overview of the synthesis and characterization of different types of chiral ferrocene ligands, their application to various catalytic asymmetric reactions, and versatile chiral materials as well as drug intermediates synthesized from them. Written by the "who's who" of ferrocene catalysis, this is a guide to the design of new ferrocene ligands and synthesis of chiral synthetic intermediates, and will thus be useful for organic, catalytic and synthetic chemists working in academia, industrial research or process development.

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 2003-05-29 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asymmetric synthesis remains a challenge to practicing scientistsas the need for enantiomerically pure or enriched compoundscontinues to increase. Over the last decade, a large amount ofliterature has been published in this field. Principles andApplications of Asymmetric Synthesis consolidates and evaluates themost useful methodologies into a one-volume resource for theconvenience of practicing scientists and students. Authored by internationally renowned scientists in the field, thisreliable reference covers more than 450 reactions and includesimportant stoichiometric as well as catalytic asymmetric reactions.The first chapter reviews the basic principles, commonnomenclature, and analytical methods, and the remainder of the bookis organized according to reaction type. The text examines suchtopics 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 othercyclizations Applications to the total synthesis of natural products Use of enzymes in asymmetric synthesis Practicing chemists in the pharmaceutical, fine chemical, andagricultural professions as well as graduate students will findthat Principles and Applications of Asymmetric Synthesis affordscomprehensive and current coverage.

Download or read book Side Reactions in Organic Synthesis written by Florencio Zaragoza Dörwald and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most syntheses in the chemical research laboratory fail and usually require several attempts before proceeding satisfactorily. Failed syntheses are not only discouraging and frustrating, but also cost a lot of time and money. Many failures may, however, be avoided by understanding the structure-reactivity relationship of organic compounds. This textbook highlights the competing processes and limitations of the most important reactions used in organic synthesis. By allowing chemists to quickly recognize potential problems this book will help to improve their efficiency and success-rate. A must for every graduate student but also for every chemist in industry and academia. Contents: 1 Organic Synthesis: General Remarks 2 Stereoelectronic Effects and Reactivity 3 The Stability of Organic Compounds 4 Aliphatic Nucleophilic Substitutions: Problematic Electrophiles 5 The Alkylation of Carbanions 6 The Alkylation of Heteroatoms 7 The Acylation of Heteroatoms 8 Palladium-Catalyzed C-C Bond Formation 9 Cyclizations 10 Monofunctionalization of Symmetric Difunctional Substrates

Download or read book Asymmetric Synthesis of Three Membered Rings written by Hélène Pellissier and published by John Wiley & Sons. This book was released on 2017-06-19 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first handbook to focus on the asymmetric synthesis of different types of three-membered rings. The outstanding and experienced authors have an excellent international reputation and cover cyclopropanes, epoxides and aziridines as well as chiral oxaziridines in equal measure. To this end, they describe in detail different synthetic approaches starting with chiral substrates as well as the application of chiral metal- or organocatalysts. Furthermore, methods for the kinetic resolution of initially racemic products are treated alongside recent advances and novel developments in established techniques for the synthesis of three-membered rings. With its structured composition this is of high interest to scientists in methodological and natural product synthesis as well as those in industrial and pharmaceutical chemistry.