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Group 4 Metallocene Compounds Reagents And Catalysts In Carbon Carbon Bond Forming Reactions
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Book Synopsis Group 4 Metallocene Compounds: Reagents and Catalysts in Carbon-carbon Bond Forming Reactions by : Dan Bergen Millward
Download or read book Group 4 Metallocene Compounds: Reagents and Catalysts in Carbon-carbon Bond Forming Reactions written by Dan Bergen Millward and published by . This book was released on 1999 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbonyl Compounds written by Feng Shi and published by John Wiley & Sons. This book was released on 2021-08-11 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbonyl Compounds Discover how carbonyl compounds bridge reactants, catalysts, and specific products Carbonyl-containing molecules represent some of the most versatile functionalities in organic chemistry, with applications in a wide variety of areas. In Carbonyl Compounds: Reactants, Catalysts and Products, accomplished chemists and authors Feng Shi, Hongli Wang, and Xingchao Dai deliver a comprehensive treatment of these multi-functional compounds. You’ll discover how to build carbonyl molecules with traditional and non-traditional methods, how to transform carbonyl-containing molecules into fine chemicals, and how to use carbonyl-containing molecules as catalytic materials for the synthesis of fine chemicals. The book is a comprehensive and systematic treatment of carbonyl compounds as reactants, catalysts, and products. From the use of carbon monoxide in the hydroformylation of alkenes and alkynes to the reactions via carbonyl and hydroxyl groups recycling, you’ll find everything you need to know about these versatile compounds. Readers will also benefit from the inclusion of: A thorough introduction to carbonyl molecules as reactants, including treatments of carbon monoxide, carbon dioxide, HCHO, HCOOH, and CO surrogates An exploration of carbonyl compounds as catalysts, including acid catalyzed reactions with -CO2H and reactions via carbonyl and hydroxyl groups recycling A practical discussion of the synthetic applications of carbonyl compounds, including the synthesis of functional molecules and the synthesis of functional materials A concise treatment of future perspectives and potential research trends for carbonyl molecules Perfect for organic, catalytic, pharmaceutical, and physical chemists, Carbonyl Compounds will also earn a place in the libraries of chemical engineers and materials scientists seeking a one-stop reference for up-to-date information about the building, transformation, and applications of carbonyl-containing molecules.
Book Synopsis Metal Catalysed Carbon-Carbon Bond-Forming Reactions, Volume 3 by : Stanley M. Roberts
Download or read book Metal Catalysed Carbon-Carbon Bond-Forming Reactions, Volume 3 written by Stanley M. Roberts and published by Wiley. This book was released on 2004-11-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemist has a vast range of high-tech catalysts to use when working in fine chemical synthesis but the catalysts are generally hard to use and require both time, skill and experience to handle properly. The Catalysts for Fine Chemical Synthesis series contains tested and validated procedures which provide a unique range resources for chemists who work in organic chemistry. "... of great value to synthetic organic chemists..." (The Chemists, Summer 2003) Volume 3 in the series focuses on catalysts for carbon-carbon bond formation and presents practical and detailed protocols on how to use sophisticated catalysts by the "inventors" and "developers" who created them. The combination of protocols and review commentaries helps the reader to easily and quickly understand and use the new high-tech catalysts.
Book Synopsis Asymmetric Catalysis of Carbon-carbon Bond Forming Reactions by : Souvagya Biswas
Download or read book Asymmetric Catalysis of Carbon-carbon Bond Forming Reactions written by Souvagya Biswas and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nature has established numerous methods for synthesis of complex molecules utilizing simple and abundant resources such as the use of CO2, H2O and N2 using sunlight as a source of energy. Even more impressive are the high chemo-, regio-, and stereoselectivites observed in these transformations with a wide variety of both prochiral and chiral substrates. However, methods for the enantioselective incorporation of feedstock materials such as CO, HCN, CO2 or simple alkenes into prochiral molecules are limited and remain an important challenge in the field. The hydrovinylation reaction (HV), where ethylene is added across a carbon-carbon double bond, has been known for nearly fifty years, starting with the works of Hata, Alderson and Wilke. During the past few years, through an approach that relied mostly on mechanistic insights and systematic examination of ligand effects, our group discovered a number of protocols for Ni(II)- and Co(II)-catalyzed enantioselective hydrovinylation (HV) reactions of vinylarenes, 1,3-dienes and strained olefins. While the Ni(II)-catalyzed hydrovinylation (HV) reaction is one of the most selective asymmetric catalyzed carbon-carbon bond forming reactions, its use has been limited to alkenes conjugated to an aromatic ring and strained alkenes. We recently found Co(II)-bisphosphine complexes show much improved regioselectivity with broader functional group compatibility in 1,3-dienes. By utilizing finely tuned catalysts derived from Co(II)-bisphosphine complexes and Me3Al or methylaluminoxane (MAO) acyclic (E) and (Z)-1,3-dienes were found to undergo efficient hydrovinylation giving mostly 1,4-hydrovinylation products in an atmosphere of ethylene. In order to expand the hydrovinylation chemistry, we turned our attention to one of the mostly widely used intermediates on organic chemistry, viz., silyl enol ethers. Trialkylsilyl enol ethers are exceptionally versatile intermediates often used as enolate surrogates for the synthesis of carbonyl compounds. Yet there are no reports of broadly applicable, catalytic methods for the synthesis of chiral silyl enol ethers carrying latent functionalities useful for synthetic operations beyond the many possible reactions of the enol ether moiety itself. The work presented herein reports a general procedure for highly catalytic (substrate : catalyst ratio up to 1000:1) and enantioselective (96% to 98% major enantiomer) synthesis of silyl enol ethers bearing a vinyl group at a chiral carbon at the beta-position. The reactions, run under ambient conditions, use trialkylsiloxy-1,3-dienes and ethylene (1 atmosphere) as precursors, and readily available (bis-phosphine)-cobalt(II) complexes as catalysts. Once we have established the HV reaction conditions of the siloxydienes, we turn our attention towards diastereoselective functionalization of the hydrovinylated products. Under optimized conditions, we are able to successfully utilize our 1,4-hydrovinylated products as reactive nucleophilic synthons for several electrophilic reactions keeping moderate to good diastereomeric ratios. The silyl enolates can be readily converted into novel enantiopure vinyl triflates, a class of highly versatile cross-coupling reagents, enabling the syntheses of other enantiomerically pure trisubstituted alkene intermediates not easily accessible by current methods.
Book Synopsis Metal Catalysed Carbon-Carbon Bond-Forming Reactions by : Stanley M. Roberts
Download or read book Metal Catalysed Carbon-Carbon Bond-Forming Reactions written by Stanley M. Roberts and published by John Wiley & Sons. This book was released on 2005-01-28 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemist has a vast range of high-tech catalysts to use when working in fine chemical synthesis but the catalysts are generally hard to use and require both time, skill and experience to handle properly. The Catalysts for Fine Chemical Synthesis series contains tested and validated procedures which provide a unique range resources for chemists who work in organic chemistry. "... of great value to synthetic organic chemists..." (The Chemists, Summer 2003) Volume 3 in the series focuses on catalysts for carbon-carbon bond formation and presents practical and detailed protocols on how to use sophisticated catalysts by the "inventors" and "developers" who created them. The combination of protocols and review commentaries helps the reader to easily and quickly understand and use the new high-tech catalysts.
Book Synopsis The Chemistry of the Metal Carbon Bond, Volume 4 by : Frank R. Hartley
Download or read book The Chemistry of the Metal Carbon Bond, Volume 4 written by Frank R. Hartley and published by Wiley. This book was released on 1987-06-22 with total page 1366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemistry of the Metal-Carbon Bond is a multi-volume work within the well established series of books covering The Chemistry of Functional Groups. It aims to cover the chemistry of the metal-carbon bond as a whole, but lays emphasis on the carbon end. It should therefore be of particular interest to the organic chemist. This fourth volume is concerned with the use of organometallic compounds in organic synthesis. It includes material concerned with carbon-carbon bond formation together with chapters concerned with the formation of carbon-hydrogen and other carbon- element bonds. The material is divided into two parts: the first part is concerned with the preparation of the main group organometallic compounds and their Use in organic synthesis. The second part includes the use of transition metal organometallics in organic synthesis as well as chapters on hydrogenation, saturated carbon-hydrogen bond activation and the rapidly expanding field of supported metal complex catalysts.
Book Synopsis Olefin Polymerization by : Walter Kaminsky
Download or read book Olefin Polymerization written by Walter Kaminsky and published by Wiley-VCH. This book was released on 2006-08-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an enormous velocity, olefin polymerization has expanded to one of the most significant fields in polymers since the first industrial use about 50 years ago. In 2005, 100 million tons of polyolefins were produced - the biggest part was catalyzed by metallorganic compounds. The Hamburg Macromolecular Symposium 2005 with the title "Olefin Polymerization" involved topics such as new catalysts and cocatalysts, kinetics, mechanism and polymer reaction engineering, synthesis of special polymers, and characterization of polyolefins. The conference combined scientists from different disciplines to discuss latest research results of polymers and to offer each other the possibility of cooperation. This is reflected in this volume, which contains invited lectures and selected posters presented at the symposium.
Book Synopsis Carbon-carbon Bond Forming Reactions Catalyzed by Rhenium(V)-oxo and Cationic Phosphinegold(I) Complexes by : Olivia Y. Hung
Download or read book Carbon-carbon Bond Forming Reactions Catalyzed by Rhenium(V)-oxo and Cationic Phosphinegold(I) Complexes written by Olivia Y. Hung and published by . This book was released on 2007 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cleavage of Carbon-Carbon Single Bonds by Transition Metals by : Masahiro Murakami
Download or read book Cleavage of Carbon-Carbon Single Bonds by Transition Metals written by Masahiro Murakami and published by John Wiley & Sons. This book was released on 2015-09-21 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by leading experts and pioneers in the field, this is the first up-to-date book on this hot topic. The authors provide synthetic chemists with different methods to activate carbon-carbon sigma bonds in organic molecules promoted by transition metal complexes. They explain the basic principles and strategies for carbon-carbon bond cleavage and highlight recently developed synthetic protocols based on this methodology. In so doing, they cover cleavage of C-C bonds in strained molecules, reactions involving elimination of carbon dioxide and ketones, reactions via retroallylation, and cleavage of C-C bonds of ketones and nitriles. The result is an excellent information source for researchers in academia and industry working in the field of synthetic organic chemistry, while equally serving as supplementary reading for advanced courses in organometallic chemistry and catalysis.
Book Synopsis Multimetallic Catalytic Methods for the Formation of Carbon-carbon Bonds by : Laura Keiko Gilah Ackerman
Download or read book Multimetallic Catalytic Methods for the Formation of Carbon-carbon Bonds written by Laura Keiko Gilah Ackerman and published by . This book was released on 2016 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis describes the use of multiple transition metal catalysts for the selective formation of carbon-carbon bonds. While the majority of cross coupling reactions rely on one transition-metal catalyst which reacts with a stoichiometric metal reagent, the combination of two metal catalysts in reactions has the potential to significantly increase the expediency towards synthetic targets, eliminating the need for stoichiometric metal reagents and improving functional group compatibility. There are many precedents for the combination of catalysts in organic methodology, however relatively few examples of multimetallic catalyzed reactions exist, and even fewer examples exist where the mechanism between the two catalytic metals is understood. The aim of the projects communicated in this thesis is two-fold: (1) To design new and efficient ways to form useful carbon-carbon bonds (Csp2-Csp3, Csp2-Csp2, and Csp2-Csp2) from readily available starting materials and (2) to provide insight into how two transition metal catalysts can cooperate in a reaction to achieve high selectivity and yield. Chapter 1 reviews the importance of carbon-carbon bond formation and introduces the main methods of cross coupling, including the concept of multimetallic catalysis. Previous examples of dual metal catalysis are summarized in the literature and the advantages and challenges of using two metals in a catalytic system are discussed. Chapter 2 presents a nickel and cobalt catalyzed strategy for the formation of Csp2-Csp3 bonds. The first attempted cross electrophile couplings to form diarylmethanes from benzyl halides and aryl iodides is reported in moderate selectivity, followed by the strategic optimization of the co-catalytic system which enables higher yields and selectivity through the coupling of benzyl sulfonate esters with aryl halides. In this reaction, nickel reacts selectively with aryl halides through an oxidative addition step, while cobalt phthalocyanine generates radicals through an Sn2 reaction with benzyl sulfonate esters, followed by homolysis. The extension of this method to coupling benzyl phosphonate esters and primary and secondary benzyl chlorides is also presented. Chapter 3 reports the quest for and ultimate discovery of a multimetallic catalyzed Csp2-Csp2 coupling. Beginning with stoichiometric transmetalation studies for the coupling of aryl C-H bonds with aryl C-X bonds, the reaction of various metal aryl complexes based on iridium, ruthenium, copper, nickel, and palladium are described. While these reactions were ineffective in generating unsymmetrical biaryls, the catalytic combination of a nickel and palladium catalyst to couple aryl bromides with aryl trifluoromethanesulfonate esters for the design of a cross Ullman reaction was a success. This reaction provided access to a variety of unsymmetrical biaryls maintaining an equimolar catalyst loading of the two metals, and showed promise for later development of the formation of useful unsymmetrical bipyridines and dienes. The scope of this remarkable reaction, the origin of selectivity, and the enhancement in rate and selectivity by a KF additive is presented. Additionally, the optimization strategy towards coupling chlorobenzene and electron-rich aryl chlorides is communicated. Finally, this chapter includes the first attempted multimetallic catalyzed multicomponent reactions with the nickel and palladium as well as nickel and cobalt catalyzed systems, including carbonylation, and the difunctionalization of olefins and alkynes."--Pages xii-xiii.
Book Synopsis Organometallic Reactions by : Ernest I. Becker
Download or read book Organometallic Reactions written by Ernest I. Becker and published by John Wiley & Sons. This book was released on 1971 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalyzed Carbon-Heteroatom Bond Formation by : Andrei K. Yudin
Download or read book Catalyzed Carbon-Heteroatom Bond Formation written by Andrei K. Yudin and published by John Wiley & Sons. This book was released on 2010-12-01 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an experienced editor widely acclaimed within the scientific community, this book covers everything fromo9xygen to nitrogen functionalities. From the contents: Palladium-Catalyzed Syntheses of Five-Member Saturated Heterocyclic and of Aromatic Heterodynes Palladium-Catalysis for Oxidative 1, 2-Difunctionalization of Alkenes Rhodium-Catalyzed Amination of C-H-Bonds Carbon-Heteroatom Bond Formation by RH(I)-Catalyzed Ring-Opening Reactions Transition Metal-Catalyzed Synthesis of Lactones and of Monocyclic and Fused Five-Membered Aromatic heterocycles the Formation of Carbon-Sulfur and Carbon-Selenium bonds by Substitution and Addition reactions catalyzed by Transition Metal Complexes New Reactions of Copper Acetylides Gold Catalyzed Addition of Nitrogen, Sulfur and Oxygen Nucleophiles to C-C Multiple Bonds. The result is an indispensable source of information for the Strategic Planning of the Synthetic routes for organic, catalytic and medicinal chemists, as well as chemists in industry.
Book Synopsis Metal-catalyzed Carbon-carbon Bond Forming Reactions for the Synthesis of Significant Chiral Building Blocks by : Alejandro Bugarin Cervantes
Download or read book Metal-catalyzed Carbon-carbon Bond Forming Reactions for the Synthesis of Significant Chiral Building Blocks written by Alejandro Bugarin Cervantes and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Morita Baylis-Hillman (MBH) reaction a carbon-carbon bond forming reaction between an [alpha], [beta]-unsaturated carbonyl and aldehydes or activated ketones in the presence of a nucleophilic catalyst. The MBH reaction is an atom-economical method of rapid increase of molecular complexity. The development of this process has received considerable attention in recent years. This dissertation presents the development of a new catalytic system for the symmetric and asymmetric MBH reaction. The new system for the racemic version of this reaction was accomplished employing a 1:1:1 ratio of catalytic amounts (10 mol%) of MgI2, TMEDA and DMAP and proved to be highly effective. For the asymmetric version was developed a highly enantio-selective system based on Fu's planar chiral DMAP derivative (II) with ee ́s up to 98%. Abnormal MBH adducts are obtained employing either ethyl 2,3-butadienoate or ethyl propiolate in good yields, in the presence if MgI2 and either a tertiary amine or phosphine as the nucleophile. The [alpha], [beta]-unsaturated carbonyls where prepared by a modified direct [alpha]-methylenation using paraformaldehyde, diisopropylammonium trifluoroacetate, and catalytic acid or base with excellent yields for several carbonyls compounds. The Negishi cross-coupling reaction is the Pd or Ni-catalyzed stereoselective cross-coupling or organozincs and aryl-, alkenyl-, or alkynyl halides. Enantioselective Negishi cross-coupling of aryl zincs and [alpha]-bromo ketones was accomplished employing a NCN Pincer complex as the catalyst with ee ́s up 99%. The required pincer complexes have been prepared by the oxidative addition of pincer ligands with palladium or nickel. Additionally, It has been developed a direct and highly active, (NCN)-Pd catalytic system for the [alpha]-arylation of ketones with a variety of aryl bromides using the air and moisture stable [t-BuPheBox-Me2]PdBr (XVI) as the catalyst. The adducts are obtained in excellent yields (92% average for 20 examples) in only 1 hour using 1 mol% of catalyst loading. Perhaps more importantly, the work described here shows that XVI is highly reactive, highly selective, even on substrates bearing challenging functional groups such alkenes.
Book Synopsis Earth-Abundant Transition Metal Catalyzed Reactions by :
Download or read book Earth-Abundant Transition Metal Catalyzed Reactions written by and published by Elsevier. This book was released on 2024-09-18 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earth-Abundant Transition Metal Catalyzed Reactions, Volume 74 in the Advances in Catalysis series, highlights new advances in the field, with this new volume presenting interesting chapters. Each chapter is written by an international board of authors. Chapters in this new release include in Chiral Iron Complexes for Asymmetric Catalysis, Recent advances in Ni-catalyzed Functionalization of Strong C-O and C-H Bonds, Low-valent Molecular Cobalt Complexes for Reductive Chemistry, Iron-catalyzed group-transfer reactions with hypervalent iodine reagents, and Iron Porphyrins for Mediating Atom Efficient C–C Bond Formations. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in Advances in Catalysis serials Updated release includes the latest information in the field
Book Synopsis Grignard Reagents and Transition Metal Catalysts by : Janine Cossy
Download or read book Grignard Reagents and Transition Metal Catalysts written by Janine Cossy and published by . This book was released on 2016 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1912, the Chemistry Nobel Prize was awarded for the discovery of the so-called Grignard reagents. Nowadays, many transition metal variants are developed to modify reactivity and selectivity of the C-C bond formation reaction. The Grignard reaction is one of the fundamental organometallic reactions, often used in alcohol syntheses. With transition metals like iron, cobalt and nickel or with noble metals like copper, silver and palladium, modern Grignard reagents can be designed in reactivity, selectivity and functional group tolerance. This book, written by international experts, presents an overview on timely Grignard chemistry involving transition metals.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Intramolecular Carbon-carbon Bond Forming Reactions in Transition Metal Complexes by : Chenjie Wang
Download or read book New Intramolecular Carbon-carbon Bond Forming Reactions in Transition Metal Complexes written by Chenjie Wang and published by . This book was released on 1993 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
