Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Synthesis And Characterization Of Supported Organometallic Rhodiumi Catalysts
Download Synthesis And Characterization Of Supported Organometallic Rhodiumi Catalysts full books in PDF, epub, and Kindle. Read online Synthesis And Characterization Of Supported Organometallic Rhodiumi Catalysts ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Synthesis and Characterization of Supported Organometallic Rhodium(I) Catalysts by : Donald Nilan Marquardt
Download or read book Synthesis and Characterization of Supported Organometallic Rhodium(I) Catalysts written by Donald Nilan Marquardt and published by . This book was released on 1974 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 18 maart - 6 april 1920 written by and published by . This book was released on 1920 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rhodium Catalysis by : Carmen Claver
Download or read book Rhodium Catalysis written by Carmen Claver and published by Springer. This book was released on 2017-12-15 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics of pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors. All chapters from Topics in Organometallic Chemistry are published OnlineFirst with an individual DOI. In references, Topics in Organometallic Chemistry is abbrev iated as Top Organomet Chem and cited as a journal.
Author :Piet W.N.M. van Leeuwen Publisher :Springer Science & Business Media ISBN 13 :0306469472 Total Pages :291 pages Book Rating :4.3/5 (64 download)
Book Synopsis Rhodium Catalyzed Hydroformylation by : Piet W.N.M. van Leeuwen
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.
Book Synopsis Preparation, Characterization, and Catalytic Activity of Some Organometallic Rhodium(I) Catalysts Supported on Polyorganosiloxane Polymers by : Mark Oliver Farrell
Download or read book Preparation, Characterization, and Catalytic Activity of Some Organometallic Rhodium(I) Catalysts Supported on Polyorganosiloxane Polymers written by Mark Oliver Farrell and published by . This book was released on 1978 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organometallics as Catalysts in the Fine Chemical Industry by : Matthias Beller
Download or read book Organometallics as Catalysts in the Fine Chemical Industry written by Matthias Beller and published by Springer. This book was released on 2012-08-31 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Johannes G. de Vries: Pd-catalyzed coupling reactions.- Gregory T. Whiteker and Christopher J. Cobley: Applications of Rhodium-Catalyzed Hydroformylation in the Pharmaceutical, Agrochemical and Fragrance Industries.- Philippe Dupau: Ruthenium-catalyzed Selective Hydrogenation for Flavor and Fragrance Applications.- Hans-Ulrich Blaser, Benoît Pugin and Felix Spindler: Asymmetric Hydrogenation.- Ioannis Houpis: Case Study: Sequential Pd-catalyzed Cross-Coupling Reactions; Challenges on Scale-up.- Adriano F. Indolese: Pilot Plant Scale Synthesis of an Aryl-Indole - Scale up of a Suzuki Coupling.- Per Ryberg: Development of a Mild and Robust Method for Palladium Catalysed Cyanation on Large Scale.- Cheng-yi Chen: Application of Ring Closing Metathesis Strategy to the Synthesis of Vaniprevir (MK-7009), a 20-Membered Macrocyclic HCV Protease Inhibitor.
Book Synopsis Rhodium Catalysis in Organic Synthesis by : Ken Tanaka
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.
Book Synopsis The Synthesis, Characterization, and Catalytic Applications of Heteropolyanion-supported Rhodium(I) and Iridium(I) by : David John Edlund
Download or read book The Synthesis, Characterization, and Catalytic Applications of Heteropolyanion-supported Rhodium(I) and Iridium(I) written by David John Edlund and published by . This book was released on 1987 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prepatation, Characterization and Catalytic Activity of Some Organometallic Rhodium(I) Catalysts Supported on Polyorganosiloxane Polymers by : Mark Oliver Farrell
Download or read book Prepatation, Characterization and Catalytic Activity of Some Organometallic Rhodium(I) Catalysts Supported on Polyorganosiloxane Polymers written by Mark Oliver Farrell and published by . This book was released on 1978 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supported Molecular Rhodium Complexes and Dimers by : Dicle Yardimci
Download or read book Supported Molecular Rhodium Complexes and Dimers written by Dicle Yardimci and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid catalysts incorporating transition metals are important in industry, providing cost- effective syntheses, ease of separation from products, and control of selectivity. The metal is often expensive and thus often constitutes only about one percent of the catalyst mass, being highly dispersed on a high-area support. Dispersed metals in industrial catalysts are usually highly nonuniform in structure and challenging to characterize, and consequently relationships between structure and catalyst performance are typically less than fully understood. Our approach to the investigation of supported metal catalysts involves the synthesis of uniform catalytic sites that have essentially molecular character. Supported molecular catalysts can be characterized spectroscopically to provide fundamental understanding of the catalyst structure under reactive atmospheres, and thereby determination of structural changes of working catalysts that can be correlated with the catalytic activity and selectivity. The sample characterization techniques used in this work included infrared (IR), extended X-ray absorption fine structure (EXAFS), and X-ray absorption near edge structure (XANES) spectroscopies, as well as gas chromatography (GC) and mass spectrometry (MS) to characterize reaction products. The catalysts were prepared from the organometallic precursor Rh(C2H4)2(C5H7O2) and the supports MgO and zeolite HY. These catalysts initially incorporated site-isolated, mononuclear rhodium complexes on the supports. The complexes on MgO were treated in H2 at elevated temperatures to form the smallest supported rhodium clusters--rhodium dimers. These catalysts are essentially molecular in character and allowed tailoring of the rhodium nuclearity, the ligands bonded to the rhodium, and the rhodium-support interface. The catalysts incorporated mononuclear Rh(C2H4)2 and Rh(CO)2 complexes; dimeric rhodium clusters with ethyl ligands, and dimeric rhodium clusters with CO ligands. These were tested for the hydrogenation of ethylene. Rhodium in various forms is highly active for catalytic hydrogenation of olefins. However, rhodium has been little investigated for diene hydrogenation, because, like other noble metals in the form of supported clusters or particles, it is unselective. We postulated that new catalytic chemistry of rhodium could emerge if the catalytic species were essentially molecular so that they could be tuned by the choice of the rhodium nuclearity and ligands. Thus, we investigated the influence of the following catalyst design variables on the activity and selectivity of supported rhodium for 1,3-butadiene hydrogenation: (a) the metal nuclearity, ranging from one to several; (b) the electron-donor properties of the support (MgO vs. zeolite Y); and (c) other ligands on the rhodium, including reactive hydrocarbons (ethylene or ethyl) and CO. The data show that extremely small MgO-supported rhodium clusters that are partially carbonylated are highly active and selective for the hydrogenation of 1,3-butadiene to give n-butenes. The support, the rhodium nuclearity, and the ligands on rhodium are crucial to the catalyst selectivity, transforming a metal that is typically regarded as unselective for 1,3-butadiene hydrogenation into one that is highly selective even at high conversions. Transition metals in complexes and clusters tend to aggregate to form of more stable, bulk particles under reactive atmospheres, causing catalyst deactivation. We investigated the initial steps of the aggregation of supported metal species that were highly dispersed on MgO and zeolite HY, synthesizing samples that incorporated supported rhodium complexes bonded to ligands with different reactivities (including the support), and then spectroscopically investigated the formation of extremely small rhodium clusters in the presence of H2. The stability of the rhodium complexes and the stoichiometry of the surface-mediated transformations are regulated by the support and the other ligands bonded to the rhodium, being prompted at a lower temperature with zeolite HY than the better electron-donor MgO when the rhodium complexes incorporate ethylene ligands, but occurring more facilely on the MgO than on the zeolite when the ligands are CO. The preparation of highly uniform rhodium dimers is possible. We infer that results such as those presented here may be useful in guiding the design of stable, highly dispersed supported metal catalysts by choice of the support and other ligands on the metal.
Book Synopsis Synthesis, Characterization and Catalytic Performance of Rhodium and Iridium Complexes Supported in Dealuminated HY Zeolite by : Claudia Martinez Macias
Download or read book Synthesis, Characterization and Catalytic Performance of Rhodium and Iridium Complexes Supported in Dealuminated HY Zeolite written by Claudia Martinez Macias and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Essentially molecular supported catalysts were synthesized by using organometallic complexes as precursors, such as Rh(CO)2(acac), Rh(C2H4)2(acac), Ir(CO)2(acac), and Ir(C2H4)2(acac) (where acac is acetylacetonate) and HY zeolite as a support. A goal was to obtain highly uniform solid catalysts with well-defined structures. Characterization by X-ray absorption (XAS) and infrared (IR) spectroscopies confirmed the anchoring of the metal to the support with a high degree of uniformity. IR and 29Si and 27Al nuclear magnetic resonance (NMR) spectra characterize the presence of amorphous regions in the zeolite, and scanning transmission electron microscopy (STEM) identifies these amorphous regions, where iridium is more susceptible to aggregation than in the crystalline regions. Treatment of Ir(CO)2/HY zeolite with C2H4 and H2 at room temperature led to a family of species which includes Ir(CO)2, Ir(CO)(C2H4), Ir(CO)(C2H4)2, Ir(CO)(C2H5) and, tentatively, Ir(CO)(H). The identification of the species is based on XAS and IR spectra (including spectra of samples made with isotopically labeled ligands, 13CO and D2O) and density functional theory (DFT) calculations. The catalytic performance of isostructural rhodium and iridium species incorporating CO as a ligand was measured for the ethylene conversion; the CO not only acts as an inhibitor but it also as a probe molecule providing information about the electronic properties of the metal and of the species present during reaction. When isostructural rhodium and iridium diethylene species are bonded near each other on HY zeolite, the iridium complexes alter the selectivity of rhodium by spilling over hydrogen that hinders the interaction between ethylene and the acidic sites of the zeolite that act in concert with the rhodium, causing it to favor ethylene hydrogenation over dimerization. All these results show how structurally simple solid catalysts can be used to facilitate fundamental understanding of catalysts and their performance.
Book Synopsis Synthesis and Characterization of Poly(propyleneimine)-based Rhodium(I) Metallodendrimers and Their Evaluation as Hydroformylation Catalysts by : Nathan Antonels
Download or read book Synthesis and Characterization of Poly(propyleneimine)-based Rhodium(I) Metallodendrimers and Their Evaluation as Hydroformylation Catalysts written by Nathan Antonels and published by . This book was released on 2010 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ruthenium in Catalysis by : Pierre H. Dixneuf
Download or read book Ruthenium in Catalysis written by Pierre H. Dixneuf and published by Springer. This book was released on 2014-10-18 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics in pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors.
Book Synopsis Synthesis and Electrochemistry of Rhodium Catalyst Analogues by : Hayley L. Lillo
Download or read book Synthesis and Electrochemistry of Rhodium Catalyst Analogues written by Hayley L. Lillo and published by . This book was released on 2019 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Catalysts are used frequently in industry to expedite chemical processes; organometallic catalysts have specifically increased in usage for this purpose due to their high selectivity and activity.' Wilkinson's catalyst is a well-studied example of an organometallic catalyst, formally known as tris(triphenylphosphine) rhodium(I) chloride, discovered by Sir Geoffrey Wilkinson in 1964. Wilkinson earned a Noble Prize for this work in 1973. The complex is known to catalyze the hydrogenation of alkenes and alkynes; this mechanism is well-studied and is used for a few different pharmaceutical and manufacturing processes. However, surprisingly the electrochemical and basic redox properties of Wilkinson's catalyst are not given much attention in the literature. It is inquired whether oxidation of the center rhodium atom of Wilkinson's catalyst from a+ 1 to a +2 oxidation state will achieve catalytic ability. In addition, the substitution of different ligands to the phenyl rings of Wilkinson's catalyst could tune the electronics of the complex to accomplish catalytic ability. These ideas were both observed in this research. Analogues of Wilkinson's catalyst, or complexes where ligands were substituted on the phenyl rings of the catalyst, were synthesized and characterized; substitutions took place at the para position of the phenyl rings. Afterwards, the analogues were characterized by infrared spectroscopy (IR) and nuclear magnetic resonance (NMR) to characterize their structure. The electrochemical properties of the analogues were observed by cyclic voltammetry (CV). From these cyclic voltammograms, the oxidation peaks of the analogues were observed to analyze the electronics of these complexes. The results of this research will be examined in the following." -- From page 1.
Book Synopsis Modern Rhodium-Catalyzed Organic Reactions by : P. Andrew Evans
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 2006-03-06 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhodium has proven to be an extremely useful metal due to its ability to catalyze an array of synthetic transformations, with quite often-unique selectivity. Hydrogenation, C-H activation, allylic substitution, and numerous other reactions are catalyzed by this metal, which presumably accounts for the dramatic increase in the number of articles that have recently emerged on the topic. P. Andrew Evans, the editor of this much-needed book, has assembled an internationally renowned team to present the first comprehensive coverage of this important area. The book features contributions from leaders in the field of rhodium-catalyzed reactions, and thereby provides a detailed account of the most current developments, including: Rhodium-Catalyzed Asymmetric Hydrogenation (Zhang) Rhodium-Catalyzed Hydroborations and Related Reactions (Brown) Rhodium-Catalyzed Asymmetric Addition of Organometallic Reagents to Electron Deficient Olefins (Hayashi) Recent Advances in Rhodium(I)-Catalyzed Asymmetric Olefin Isomerization and Hydroacylation Reactions (Fu) Stereoselective Rhodium(I)-Catalyzed Hydroformylation and Silylformylation Reactions and Their Application to Organic Synthesis (Leighton) Carbon-Carbon Bond-Forming Reactions Starting from Rh-H or Rh-Si Species (Matsuda) Rhodium(I)-Catalyzed Cycloisomerization and Cyclotrimerization Reactions (Ojima) The Rhodium(I)-Catalyzed Alder-ene Reaction (Brummond) Rhodium-Catalyzed Nucleophilic Ring Cleaving Reactions of Allylic Ethers and Amines (Fagnou) Rhodium(I)-Catalyzed Allylic Substitution Reactions and their Applications to Target Directed Synthesis (Evans) Rhodium(I)-Catalyzed [2+2+1] and [4+1] Carbocyclization Reactions (Jeong) Rhodium(I)-Catalyzed [4+2] and [4+2+2] Carbocyclizations (Robinson) Rhodium(I)-Catalyzed [5+2], [6+2], and [5+2+1] Cycloadditions: New Reactions for Organic Synthesis (Wender) Rhodium(II)-Stabilized Carbenoids Containing both Donor and Acceptor Substituents (Davies) Chiral Dirhodium(II)Carboxamidates for Asymmetric Cyclopropanation and Carbon-Hydrogen Insertion Reactions (Doyle) Cyclopentane Construction by Rhodium(II)-Mediated Intramolecular C-H Insertion (Taber) Rhodium(II)-Catalyzed Oxidative Amination (DuBois) Rearrangement Processes of Oxonium and Ammonium Ylides Formed by Rhodium(II)-Catalyzed Carbene-Transfer (West) Rhodium(II)-Catalyzed 1,3-Dipolar Cycloaddition Reactions (Austin) "Modern Rhodium-Catalyzed Organic Reactions" is an essential reference text for researchers at all levels in the general area of organic chemistry. This book provides an invaluable overview of the most significant developments in this important area of research, and will no doubt be an essential text for researchers at academic institutions and professionals at pharmaceutical/agrochemical companies.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 2002 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
