Download or read book Novel Chiral Rhodium II Carboxylates as Catalysts in Asymmetric Cyclopropanations written by Paul Richard Bruzinski and published by . This book was released on 1997 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A la gloire de Dieu et l honneur de St Saint Martial ap tre d Aquitaine written by François Dalesme and published by . This book was released on 1771 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Asymmetric Catalysis written by Eric N. Jacobsen and published by . This book was released on 1999 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM contains the full-text search and a state-of-the-art graphic substructure search routine.

Download or read book Modern Rhodium Catalyzed Organic Reactions written by P. Andrew Evans and published by John Wiley & Sons. This book was released on 2005-03-04 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhodium gehört zu den interessantesten und vielseitigsten Katalysemetallen. Schon heute wird es unter anderem für die Hydroformylierung, für 1,4-Additionen und Cycloisomerisierungen verwendet; ständig kommen neue Einsatzfelder hinzu. Ein umfassender Überblick über das Gesamtgebiet wurde in der Fachwelt schon lange nachgefragt. Der Herausgeber dieses Bandes erfüllt diesen Wunsch mit einer breit gefächerten Sammlung hochinteressanter Beiträge international renommierter Fachleute

Download or read book New Chiral Rhodium II Catalysts for Asymmetric Synthesis with A diazocarbonyl Substrates written by Nicolas François Marie Pierson and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rhodium Catalysis in Organic Synthesis written by Ken Tanaka and published by John Wiley & Sons. This book was released on 2019-05-06 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential reference to the highly effective reactions applied to modern organic synthesis Rhodium complexes are one of the most important transition metals for organic synthesis due to their ability to catalyze a variety of useful transformations. Rhodium Catalysis in Organic Synthesis explores the most recent progress and new developments in the field of catalytic cyclization reactions using rhodium(I) complexes and catalytic carbon-hydrogen bond activation reactions using rhodium(II) and rhodium(III) complexes. Edited by a noted expert in the field with contributions from a panel of leading international scientists, Rhodium Catalysis in Organic Synthesis presents the essential information in one comprehensive volume. Designed to be an accessible resource, the book is arranged by different reaction types. All the chapters provide insight into each transformation and include information on the history, selectivity, scope, mechanism, and application. In addition, the chapters offer a summary and outlook of each transformation. This important resource: -Offers a comprehensive review of how rhodium complexes catalyze a variety of highly useful reactions for organic synthesis (e.g. coupling reactions, CH-bond functionalization, hydroformylation, cyclization reactions and others) -Includes information on the most recent developments that contain a range of new, efficient, elegant, reliable and useful reactions -Presents a volume edited by one of the international leading scientists working in the field today -Contains the information that can be applied by researchers in academia and also professionals in pharmaceutical, agrochemical and fine chemical companies Written for academics and synthetic chemists working with organometallics, Rhodium Catalysis in Organic Synthesis contains the most recent information available on the developments and applications in the field of catalytic cyclization reactions using rhodium complexes.

Download or read book Exploration of Donor acceptor Carbenoids in the Asymmetric Synthesis of Cyclopropanes Utilizing Rhodium II Catalysis written by Justin Ryan Denton and published by . This book was released on 2009 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the Davies group there are three research areas: methodology development, the total synthesis of natural products, and catalyst design & development. Donor/acceptor substituted rhodium carbenoids have been shown by the Davies' group to have exceptional chemoselectivity, regioselectivity, and stereoselectivity in intermolecular cyclopropanation reactions. The first major section of this thesis was devoted to explore the scope and limitations of the acceptor (the electron withdrawing group) part of the donor/acceptor substituted diazo compounds in asymmetric intermolecular cyclopropanation by Rh (II) catalysis. In the context of these projects, Rh 2 (S -PTAD) 4 was found to be an exceptional chiral catalyst for intermolecular cyclopropanation when the acceptor group was either a trifluoromethyl, nitrile, or ketone group. The highly strained cyclopropanes could be synthesized in good yields, with high diastereoselectivity, and with high enantioselectivity, when Rh 2 (S -PTAD) 4 was employed. The second major section (Chapter three) describes a collaborative investigation between the Davies and the Williams groups toward the first asymmetric synthesis of vibsanin E and related natural products. An asymmetric method to the key tricyclic core utilizing the Davies' [4+3] cyclopropanation/Cope methodology, which contains 3 of the 5 continues stereocenters of vibsanin E, was developed utilizing Rh 2 (S -PTAD) 4 . The Williams group then used the enantiomerically pure tricycle to finish the synthesis of vibsanin E and is currently working on several other similar natural products in the vibsanin family. The last major section (Chapter four) of this thesis focuses on catalyst design & development. A new route to Rh 2 (S -PTAD) 4 was developed via a asymmetric Strecker approach, which provided gram quantities of this catalyst. Also within the chapter is described the synthesis of several hydrocarbon-soluble catalysts based on the Rh 2 (S -PTAD) 4 scaffold. These catalysts are fully soluble in hexanes and/or 2,2-dimethylbutane to -78 °C and are active in the decomposition of donor/acceptor diazo compounds.

Download or read book Development and Synthesis of Chiral Dirhodium Carboxylate Catalysts and Their Applications in Asymmetric Carbenoid and Nitrenoid Transformations written by and published by . This book was released on 2008 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chiral catalysts play an important role in the advancement of synthetic organic chemistry. The Davies group is interested in the development of chiral dirhodium catalysts and their utilization in donor/acceptor diazo decomposition reactions. Rh 2 (S -DOSP) 4 catalyzed intermolecular carbenoid transformations lead to diverse products with excellent selectivity. The first chapter of this thesis explores the limitations of the currently available dirhodium catalysts and the design and synthesis of novel phthalamide-based dirhodium catalysts. Applications of these new catalysts in various carbenoid reactions are discussed. The second chapter focuses on the development of an asymmetric methodology for the synthesis of tropanes by rhodium-catalyzed [4+3] cycloaddition. This methodology has been extended to a range of electronically and structurally diverse pyrroles and furans. This asymmetric tandem cyclopropanation Cope rearrangement was then successfully applied in a key step of the enantioselective synthesis of ( - )-isostemofoline. The third chapter describes the development of asymmetric amination methodology using chiral dirhodium catalysts and their applications in both intramolecular as well as intermolecular amination reactions.

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.

Download or read book New Chiral Rhodium II Catalysts for Asymmetric Synthesis with Apha diazocarbonyl Substrates written by Nicolas Pierson and published by . This book was released on 1998 with total page 0 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 Asymmetric Synthesis in Insertion Reactions of alpha Diazocarbonyl Compounds Catalysed by Chiral Rhodium II Carboxylates written by Kevin Michael Lydon and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Asymmetric Synthesis in Insertion Reactions of Alpha diazocarbonyl Compounds Catalysed by Chiral Rhodium II Carboxylates written by Kevin M. Lydon and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multiple Bonds between Metal Atoms written by F. Albert Cotton and published by Springer Science & Business Media. This book was released on 2005-06-28 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides historical perspective as well as current data Abundantly illustrated with figures redrawn from literature data Covers all pertinent theory and physical chemistry Catalytic and chemotherapeutic applications are included

Download or read book Asymmetric Synthesis of Seven membered Rings with a Novel Rhodium Carboxylate Catalyst written by Jeffrey Hendrix Houser and published by . This book was released on 1993 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Asymmetric Metal Catalysis in Enantioselective Domino Reactions written by Helene Pellissier and published by John Wiley & Sons. This book was released on 2019-11-11 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces an innovative and outstanding tool for the easy synthesis of complex chiral structures in a single step Covering all of the literature since the beginning of 2006, this must-have book for chemists collects the major progress in the field of enantioselective one-, two-, and multicomponent domino reactions promoted by chiral metal catalysts. It clearly illustrates how enantioselective metal-catalyzed processes constitute outstanding tools for the development of a wide variety of fascinating one-pot asymmetric domino reactions, thereby allowing many complex products to be easily generated from simple materials in one step. The book also strictly follows the definition of domino reactions by Tietze as single-, two-, as well as multicomponent transformations. Asymmetric Metal Catalysis in Enantioselective Domino Reactions is divided into twelve chapters, dealing with enantioselective copper-, palladium-, rhodium-, scandium-, silver-, nickel-, gold-, magnesium-, cobalt-, zinc-, yttrium and ytterbium-, and other metal-catalyzed domino reactions. Most of the chapters are divided into two parts dealing successively with one- and two-component domino reactions, and three-component processes. Each part is subdivided according to the nature of domino reactions. Each chapter of the book includes selected applications of synthetic methodologies to prepare natural and biologically active products. -Presents the novel combination of asymmetric metal catalysis with the concept of fascinating domino reactions, which allows high molecular complexity with a remarkable level of enantioselectivity -Showcases an incredible tool synthesizing complex and diverse chiral structures in a single reaction step -Includes applications in total synthesis of natural products and biologically active compounds -Written by a renowned international specialist in the field -Stimulates the design of novel asymmetric domino reactions and their use in the synthesis of natural products, pharmaceuticals, agrochemicals, and materials Asymmetric Metal Catalysis in Enantioselective Domino Reactions will be of high interest to synthetic, organic, medicinal, and catalytic chemists in academia and R&D departments.