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Author : Drew Michael Hood
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (124 download)
Download or read book Cationic Cobalt (II) Hydroformylation written by Drew Michael Hood and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stanley M. Jing
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (17 download)
Download or read book Cationic Cobalt(i)-mediated Heterodimerizations written by Stanley M. Jing and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of abundantly available feedstock such as ethylene, carbon monoxide, hydrogen cyanide, alkyl acrylates, in fine chemical synthesis is a major challenge in organic synthesis, and developing asymmetric versions of reactions which makes use of these feedstock chemicals is an even bigger challenge. The detailed mechanism of a recently discovered cobalt-mediated hydrovinylation of prochiral dienes has been studied. The role of trimethyl aluminum employed as an activator of the cobalt(II)-dihalide complex employed for the cobalt-mediate hydrovinylation has been determined to be: reduction of Co(II)-complex to Co(I)-complex and generation of cationic-Co(I) species as active catalyst. Well defined Co(I)-complexes were synthesized and characterized via NMR spectroscopy and crystallography. Treatment of these Co(I) complexes with various activators such as NaBARF, ZnCl2, B(C6F5)3, generates cationic Co(I) which mediates the reaction. This new protocol for hydrovinylation was successfully employed for a broadly applicable asymmetric heterodimerization of acrylates and 1,3-dienes. The reaction tolerates other functional groups such as olefins, alcohols, alkyl halides, trialkylsiloxy-, and even sensitive silyl enol ethers.
Author : Xiao-Feng Wu
Publisher : John Wiley & Sons
ISBN 13 : 3527831894
Total Pages : 1780 pages
Book Rating : 4.5/5 (278 download)
Download or read book The Chemical Transformations of C1 Compounds written by Xiao-Feng Wu and published by John Wiley & Sons. This book was released on 2022-01-14 with total page 1780 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemical Transformations of C1 Compounds A comprehensive exploration of one-carbon molecule transformations The chemistry of one-carbon molecules has recently gained significant prominence as the world transitions away from a petroleum-based economy to a more sustainable one. In The Chemical Transformations of C1 Compounds, an accomplished team of chemists delivers an in-depth overview of recent developments in the field of single-carbon chemistry. The three-volume book covers all major C1 sources, including carbon monoxide, carbon dioxide, methane, methanol, formic acid, formaldehyde, carbenes, C1 halides, and organometallics. The editors have included resources discussing the main reactions and transformations into feedstock chemicals of each of the major C1 compounds reviewed in dedicated chapters. Readers will discover cutting-edge material on organic transformations with MeNO2, DMF, DCM, methyl organometallic reagents, CCl4, CHCl3, and CHBr3, as well as recent achievements in cyanation reactions via cross-coupling. The book also offers: Thorough introductions to chemical transformations of CH4, methods of CH4 activation, chemical transformations of CH3OH and synthesis alkenes from CH3OH Comprehensive explorations of the carbonylation of MeOH, CH2O in organic synthesis, organic transformations of HCO2H, and hydrogen generation from HCO2H Practical discussions of the carbonylation of unsaturated bonds with heterogeneous and homogeneous catalysts, as well as the carbonylation of C(sp2)-X bonds and C(sp3)-X bonds In-depth examinations of carbonylative C-H bond activation and radical carbonylation Perfect for organic and catalytic chemists, The Chemical Transformations of C1 Compounds is also an ideal resource for industrial chemists, chemical engineers, and practitioners at energy supply companies.
Author : Mahesh M. Parsutkar
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Development of Cationic Cobalt(I)-complexes for Enantioselective Cycloaddition and Hydrofunctionalization Reactions written by Mahesh M. Parsutkar and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments of new catalytic transformations by using earth-abundant metal (base-metal) catalysts have played a significant role in modern civilization and will continue to play a vital role towards maintaining and improving our quality of life. Particularly, these transformations have had a tremendous impacts on the agricultural, transport, energy, and pharmaceutical sectors. This field of base-metal catalysis would enjoy added benefits with the utilization of sustainable feedstock carbon sources for fine chemical synthesis. However, the dual problems of activation of thermodynamically stable precursors (ethylene, CO2, H2, CO, aldehydes, acrylates, HCN) and their highly stereoselective incorporation into other readily available substrates (1,3-dienes, alkynes, enynes) pose new challenges. In a nutshell, the development of benign catalysts for employing sustainable feedstock starting materials has the potential to transform inexpensive materials into valuable precursors for fine chemical synthesis. My dissertation work focuses on the development of scalable, atom-economical, and cost-effective catalytic methods for the preparation of value-added products relevant to fine chemicals. The overarching aims are to use sustainable feedstocks or readily available precursors, and environmentally benign chemistry. To achieve these goals, three efficient catalytic methods have been developed which employ complexes of an earth-abundant metal, cobalt, with ligands derived from naturally occurring amino acids or commercially available bis-phosphine ligands. The key to success was a systematic ligands investigation that inspired the design and synthesis of novel ligands to achieve high chemo-, regio-, and enantioselectivities. In the first methodology, a broadly applicable method affecting [2+2] cycloaddition between several alkynes and alkenyl derivatives to form cyclobutenes has been disclosed. A library of >70 nearly enantiopure cyclobutenes, which are ubiquitous motifs in bioactive compounds, have been synthesized in excellent yields. In the second methodology, ligand controlled regio-divergent enantioselective synthesis of primary and secondary homoallylic boronates (>50 examples) from readily available 1,3-dienes and a common boron reagent have been developed. Furthermore, the hydrofunctionalization of 1,3-dienes program has been extended to unprecedented enantioselective hydroacylation of 1,3-dienes. This method opens a realm to achieve the synthesis of enantiopure alpha- or beta-chiral center containing ketones. In all the mentioned transformations above, cationic Co(I)- species has been invoked as an active catalyst. To further corroborate the role of cationic Co(I)-complexes, a reliable protocol has been developed to synthesize, isolate discrete neutral and cationic Co(I)-complexes and characterized by X-ray crystallography. These isolated cationic complexes serve as an excellent single-component catalyst for heterodimerization, hydroboration, and hydroacylation, suggesting the key role of cationic Co(I)-complexes in these transformations. While developing these efficient methodologies, striking ligand, counterion, and solvent effects have been revealed along with a unique role of a cationic Co(I) intermediate in the reactions which advanced novel fundamental concepts. We believe that these cationic Co(I) complexes have broader utility in homogeneous catalysis. We hope that the rational evolution of a mechanism-based strategy that led to the eventual successful outcome and the attendant support studies will add to the burgeoning organometallic chemistry of cobalt and its applications with further implications beyond the synthetic reactions described in this dissertation.
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)
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.
Author : Maurizio Taddei
Publisher : Springer
ISBN 13 : 3642450598
Total Pages : 233 pages
Book Rating : 4.6/5 (424 download)
Download or read book Hydroformylation for Organic Synthesis written by Maurizio Taddei and published by Springer. This book was released on 2014-07-08 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Role of Metals and Ligands in Organic Hydroformylation, by Luca Gonsalvi, Antonella Guerriero, Eric Monflier, Frédéric Hapiot, Maurizio Peruzzini. Hydroformylation in Aqueous Biphasic Media Assisted by Molecular Receptors, by Frédéric Hapiot, Hervé Bricout, Sébastien Tilloy, Eric Monflier. Asymmetric Hydroformylation, by Bernabé F. Perandones, Cyril Godard, Carmen Claver. Domino Reactions Triggered by Hydroformylation, by Elena Petricci, Elena Cini. Rhodium-Catalyzed Hydroformylation in Fused Azapolycycles Synthesis, by Roberta Settambolo. Hydroformylation in Natural Product Synthesis, by Roderick W. Bates, Sivarajan Kasinathan.
Author : Marko Hapke
Publisher : John Wiley & Sons
ISBN 13 : 3527814833
Total Pages : 480 pages
Book Rating : 4.5/5 (278 download)
Download or read book Cobalt Catalysis in Organic Synthesis written by Marko Hapke and published by John Wiley & Sons. This book was released on 2019-12-10 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a much-needed account of the formidable "cobalt rush" in organic synthesis and catalysis Over the past few decades, cobalt has turned into one of the most promising metals for use in catalytic reactions, with important applications in the efficient and selective synthesis of natural products, pharmaceuticals, and new materials. Cobalt Catalysis in Organic Synthesis: Methods and Reactions provides a unique overview of cobalt-catalysed and -mediated reactions applied in modern organic synthesis. It covers a broad range of homogeneous reactions, like cobalt-catalysed hydrogenation, hydrofunctionalization, cycloaddition reactions, C-H functionalization, as well as radical and biomimetic reactions. First comprehensive book on this rapidly evolving research area Covers a broad range of homogeneous reactions, such as C-H activation, cross-coupling, synthesis of heterocyclic compounds (Pauson-Khand), and more Chapters on low-valent cobalt complexes as catalysts in coupling reactions, and enantioselective cobalt-catalyzed transformations are also included Can be used as a supplementary reader in courses of advanced organic synthesis and organometallic chemistry Cobalt Catalysis in Organic Synthesis is an ideal book for graduates and researchers in academia and industry working in the field of synthetic organic chemistry, catalysis, organometallic chemistry, and natural product synthesis.
Author : Ronald Frank Van de Water
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (122 download)
Download or read book Cationic Pentacoordinated Complexes of Copper (II) and Cobalt (II) with Mixed Ligands written by Ronald Frank Van de Water and published by . This book was released on 1979 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Armin Börner
Publisher : John Wiley & Sons
ISBN 13 : 3527335528
Total Pages : 733 pages
Book Rating : 4.5/5 (273 download)
Download or read book Hydroformylation written by Armin Börner and published by John Wiley & Sons. This book was released on 2016-04-25 with total page 733 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling a gap in the market for an up-to-date work on the topic, this unique and timely book in 2 volumes is comprehensive in covering the entire range of fundamental and applied aspects of hydroformylation reactions. The two authors are at the forefront of catalysis research, and unite here their expertise in synthetic and applied catalysis, as well as theoretical and analytical chemistry. They provide a detailed account of the catalytic systems employed, catalyst stability and recovery, mechanistic investigations, substrate scope, and technical implementation. Chapters on multiphase hydroformylation procedures, tandem hydroformylations and other industrially applied reactions using syngas and carbon monoxide are also included. The result is a must-have reference not only for synthetic chemists working in both academic and industrial research, but also for theoreticians and analytical chemists.
Author : Saeed Sahebdelfar
Publisher : CRC Press
ISBN 13 : 1000593649
Total Pages : 286 pages
Book Rating : 4.0/5 (5 download)
Download or read book C1 Chemistry written by Saeed Sahebdelfar and published by CRC Press. This book was released on 2022-06-07 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volatility of crude oil prices, depleting reservoirs and environmental concerns have stimulated worldwide research for alternative and sustainable sources of raw materials for chemicals and fuels. The idea of using single-carbon atom molecules as chemical building blocks is not new, and many such compounds have been techno-economically studied as raw materials for fuels. Nevertheless, unifying the scientific and technical issues under the topic of C1 chemistry is not as easy as it may appear. C1 Chemistry: Principles and Processes provides a comprehensive understanding of the chemical transformation from molecular to commercial plant scales and reviews the sources of C1 molecules, their conversion processes and the most recent achievements and research needs. This book: Describes the latest processes developments and introduces commercial technologies Covers a wide range of feedstocks, including greenhouse gases and organic wastes Details chemistry, thermodynamics, catalysis, kinetics and reactors for respective conversions Includes preparation and purification of C1 feedstocks, C1 molecule coupling reactions and process technologies for each C1 conversion reaction Considers environmental impacts and sustainability This book will be of interest to a wide range of researchers, academics, professionals and advanced students working in the chemical, environmental and energy sectors and offers readers insights into the challenges and opportunities in the active field of C1 chemistry.
Author : Mohammad Reza Rahimpour
Publisher : Elsevier
ISBN 13 : 0443155615
Total Pages : 260 pages
Book Rating : 4.4/5 (431 download)
Download or read book Homogeneous Carbonylation and Hydroformylation Reactions written by Mohammad Reza Rahimpour and published by Elsevier. This book was released on 2024-08-30 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Homogeneous Carbonylation and Hydroformylation Reactions with Homogeneous Catalysts and Process Development, a volume is in the Advances in Catalysis series, is split into two sections. The first covers the homogeneous carbonylation of various chemicals, such as methanol, methyl acetate, esters and ethers. In addition, some common carbonylation homogeneous processes such as water-gas shift and Fischer–Tropsch reactions are included. The second part describes hydroformylation processes like cobalt and rhodium based reactions. Both parts cover the design of catalytic reactors, industrial applications, economic assessment and environmental impacts providing detailed discussions of the subject from both a chemistry and engineering perspective. Includes fundamentals, reactor design, and process description of carbonylation and hydroformylation homogeneous reactions Describes various carbonylation and hydroformylation homogeneous reactions Explains carbonylation and hydroformylation economic and environmental challenges
Author : Bartolo Gabriele
Publisher : John Wiley & Sons
ISBN 13 : 352734795X
Total Pages : 434 pages
Book Rating : 4.5/5 (273 download)
Download or read book Carbon Monoxide in Organic Synthesis written by Bartolo Gabriele and published by John Wiley & Sons. This book was released on 2022-01-10 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Monoxide in Organic Synthesis A thoroughly up-to-date overview of carbonylation reactions in the presence of carbon monoxide In Carbon Monoxide in Organic Synthesis: Carbonylation Chemistry, expert researcher and chemist Bartolo Gabriele delivers a robust summary of the most central advances in the field of carbonylation reactions in the presence of carbon monoxide. Beginning with a brief introduction on the importance of carbon monoxide as a building block in modern organic synthesis, the author goes on to describe metal-catalyzed carbonylations utilizing iron, cobalt, nickel, copper, and manganese. Descriptions of palladium, ruthenium, and rhodium-catalyzed reactions follow, as do discussions of metal-free carbonylation processes. The book is organized by metal to make the book useful as a guide for researchers from both academia and industry whose work touches on the direct synthesis of carbonyl compounds, carboxylic acid derivatives, and heterocycles. It aims to stimulate further discoveries in this rapidly developing field. Readers will also enjoy: A thorough introduction to carbonylations promoted by first row transition metal catalysts, including cobalt-catalyzed and nickel-catalyzed carbonylations An exploration of carbonylations promoted by second row transition metal catalysts, including ruthenium-, rhodium-, palladium(0)-, and palladium (II)-catalyzed carbonylations Practical discussions of miscellaneous carbonylation reactions, including carbonylations promoted by third row transition metal catalysts and metal-free carbonylation processes Perfect for catalytic and organic chemists, Carbon Monoxide in Organic Synthesis: Carbonylation Chemistry is also an indispensable resource for chemists working with organometallics and industrial chemists seeking a summary of important processes used to synthesize value-added products.
Author : Manher M. Deva
Publisher :
ISBN 13 :
Total Pages : 137 pages
Book Rating : 4.:/5 (429 download)
Download or read book Reversed-phase High Performance Liquid Chromatography of Cationic Cobalt (III) Complexes written by Manher M. Deva and published by . This book was released on 1982 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Formation of Neutral and Cationic [pi]-allyl Cobalt Complexes from [sigma]-cyclopropyl Precursers PDF Online Free](https://books.google.com/books/content/images/frontcover/HzweAQAAMAAJ?fife=w200-h370)
Author : Peggy J. McCann
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.3/5 ( download)
Download or read book Formation of Neutral and Cationic [pi]-allyl Cobalt Complexes from [sigma]-cyclopropyl Precursers written by Peggy J. McCann and published by . This book was released on 1991 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David J. Cole-Hamilton
Publisher : Springer Science & Business Media
ISBN 13 : 9781402040863
Total Pages : 270 pages
Book Rating : 4.0/5 (48 download)
Download or read book Catalyst Separation, Recovery and Recycling written by David J. Cole-Hamilton and published by Springer Science & Business Media. This book was released on 2006-01-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book looks at new ways of tackling the problem of separating reaction products from homogeneous catalytic solutions. The new processes involve low leaching supported catalysts, soluble supports such as polymers and dendrimers and unusual solvents such as water, fluorinated organics, ionic liquids and supercritical fluids. The advantages of the different possibilities are discussed alongside suggestions for further research that will be required for commercialisation. Unlike other books, in addition to the chemistry involved, the book looks at the process design that would be required to bring the new approaches to fruition. Comparisons are given with existing processes that have already been successfully applied and examples are given where these approaches are not suitable. The book includes: - New processes for the separation of products from solutions containing homogeneous catalysts - Catalysts on insoluble or soluble supports – fixed bed catalysts - continuous flow or ultrafiltration - Biphasic systems: water - organic, fluorous - organic, ionic liquid – organic, supercritical fluids (monophasic or biphasic with water, organic or ionic liquid) - Comparisons with current processes involving atmospheric or low temperature distillation - Consideration of Chemistry and Process Design - Advantages and disadvantages of each process exposed - Consideration of what else is need for commercialisation
Author : Yam Nath Timsina
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (92 download)
Download or read book Cobalt (II)-catalyzed Asymmetric Hydrovinylation of 1,3-linear Dienes, Vinylarenes and Isomerization of 1,3-dienes written by Yam Nath Timsina and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Considering the best alternative to more expensive, more toxic, or more unstable catalysts, chemists have been using cobalt salts and complexes as a catalyst for over the past sixty years. There are numerous reactions like Diels-Alder, cyclizations, cross coupling, free radical and metathesis reactions where cobalt complexes have been used as catalysts. Recently, cobalt has been recognized as among the finest catalyst for various heterodimerization reactions of alpha-olefins with aryl alkenes and 1,3-dienes. An addition of a hydrogen atom and vinyl group across the double bond is known as hydrovinylation, which is one of the most atom economical reactions in organic chemistry. The beauty of this reaction is it provides access to many value-added products from simple commodity chemicals and feedstock gases. The success of this reaction is seen in many asymmetric hydrovinylations, where a chiral cobalt catalyst combined with 1,3-dienes or vinylarenes and ethylene allow for either 1,4- or 1,2-hydrovinylation respectively to make a chiral compound in high stereo and regioselectivity. A number of these cobalt catalysts are also instrumental for the isomerization of a mixture of (E)-and (Z)-1,3-dienes to purely (Z)-isomeric forms. The work presented herein expands established methodology that introduced 1,2- and 1,4-hydrovinylation of simple linear 1,3-dienes using (bis-phosphine) cobalt (II) halide and an organoaluminum co-catalyst to include the functionalized 1,3-dienes and functionalized vinylarenes. Also presented in this thesis is the use of cobalt catalysts in the isomerization reactions converting the mixture of various (E)-and (Z)-1,3-dienes to pure (Z)-isomeric forms.
Author : Marko Hapke
Publisher : John Wiley & Sons
ISBN 13 : 3527344500
Total Pages : 480 pages
Book Rating : 4.5/5 (273 download)
Download or read book Cobalt Catalysis in Organic Synthesis written by Marko Hapke and published by John Wiley & Sons. This book was released on 2020-04-06 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a much-needed account of the formidable "cobalt rush" in organic synthesis and catalysis Over the past few decades, cobalt has turned into one of the most promising metals for use in catalytic reactions, with important applications in the efficient and selective synthesis of natural products, pharmaceuticals, and new materials. Cobalt Catalysis in Organic Synthesis: Methods and Reactions provides a unique overview of cobalt-catalysed and -mediated reactions applied in modern organic synthesis. It covers a broad range of homogeneous reactions, like cobalt-catalysed hydrogenation, hydrofunctionalization, cycloaddition reactions, C-H functionalization, as well as radical and biomimetic reactions. First comprehensive book on this rapidly evolving research area Covers a broad range of homogeneous reactions, such as C-H activation, cross-coupling, synthesis of heterocyclic compounds (Pauson-Khand), and more Chapters on low-valent cobalt complexes as catalysts in coupling reactions, and enantioselective cobalt-catalyzed transformations are also included Can be used as a supplementary reader in courses of advanced organic synthesis and organometallic chemistry Cobalt Catalysis in Organic Synthesis is an ideal book for graduates and researchers in academia and industry working in the field of synthetic organic chemistry, catalysis, organometallic chemistry, and natural product synthesis.
