Download or read book Modern Gold Catalyzed Synthesis written by A. Stephen K. Hashmi and published by John Wiley & Sons. This book was released on 2012-05-21 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: With its impressive features, gold has led to completely new reaction types in recent years, which in turn have strongly influenced both organic catalysis and material science. Other fields where a significant amount of new results has been obtained include nanotechnology, self assembly/supramolecular systems and biochemical/medicinal chemistry. As a result, gold is one of the hottest topics in catalysis at the moment, with an increasing amount of research being carried out in this field. While focusing on homogeneous catalysis, this monograph also covers the main applications in heterogeneous catalysis. Following a look at the gold-catalyzed addition of heteroatom nucleophiles to alkynes, it goes on to discuss gold-catalyzed additions to allenes and alkenes, gold-catalyzed benzannulations, cycloisomerization and rearrangement reactions, as well as oxidation and reduction reactions. The whole is finished off with a section on gold-catalyzed aldol and related reactions and the application of gold-catalyzed reactions to natural product synthesis. Of interest to synthetic chemists and inorganic chemists, as well as organic chemists working in homogeneous catalysis, physical and technical chemists.
Download or read book Gold Catalysis written by F. Dean Toste and published by . This book was released on 2014-08-01 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on designing new catalytic systems has been one of the most important fields in modern organic chemistry, and one reason for this is the predominant contribution of catalysis to the concepts of atom economy and green chemistry in the 21st century. Gold, considered catalytically inactive for a long time, is now a fascinating partner of modern chemistry, as scientists such as Bond, Haruta, Hutchings, Ito and Hayashi opened new perspectives for the whole synthetic chemist community. This book presents the major advances in homogeneous catalysis, emphasizing the methodologies that create carbon-carbon and carbon-heteroatom bonds, the applications that create diversity and synthesize natural products, and the recent advances and challenges in asymmetric catalysis and computational research. The Handbook of Homogeneous Gold Catalysis provides readers with in-depth information about gold-catalyzed reactions and presents several explanations for the scientific design of a catalyst. Readers will be able to understand the entire gold area and find solutions to problems in catalysis. Featuring prominent authors, who are experts in their respective fields, this is the first book dedicated to homogeneous gold chemistry. Contents: From Gold in Nature to Gold Catalysts (S Kramer and F Gagosz); Oxidation and Reduction Reactions (L Zhang); Gold-Catalyzed Addition of Carbon Nucleophile to C-C Multiple Bond (B Simmons and H C Shen); Gold-Catalyzed Addition of Heteroatom Nucleophile to C-C Multiple Bond (N Asao, N Hatakeyama and Y Yamamoto); Gold-Catalyzed Synthesis of Heterocycles (A Arcadi); Multi-Component Reactions (R Skouta and C J Li); Gold Catalyzed Tandem and Cascade Reactions (R-S Liu); Cycloisomerization Reactions of 1, n -Enynes (N Huguet and A Echavarren); Gold-Catalyzed Reaction of Propargylic Esters (L Fensterbank, J-P Goddard, M Malacria and S Simonneau); Gold-Catalyzed Cross-Coupling Reactions (S Blum); Gold-Catalyzed Reactions: A Computational Approach (E Soriano & J Marco-Contelles); Asymmetric Gold-Catalyzed Reactions (P Y Toullec, A Pradal and V Michelet); Gold Catalysis in Natural Product Synthesis (M Gesinski and F D Toste). Readership: Student, professionals.
Download or read book Gold Catalysis An Homogeneous Approach written by Veronique Michelet and published by World Scientific. This book was released on 2014-06-20 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on designing new catalytic systems has been one of the most important fields in modern organic chemistry. One reason for this is the predominant contribution of catalysis to the concepts of atom economy and green chemistry in the 21st century. Gold, considered catalytically inactive for a long time, is now a fascinating partner of modern chemistry, as scientists such as Bond, Teles, Haruta, Hutchings, Ito and Hayashi opened new perspectives for the whole synthetic chemist community. This book presents the major advances in homogeneous catalysis, emphasizing the methodologies that create carbon-carbon and carbon-heteroatom bonds, the applications that create diversity and synthesize natural products, and the recent advances and challenges in asymmetric catalysis and computational research.It provides readers with in-depth information about homogeneous gold-catalyzed reactions and presents several explanations for the scientific design of a catalyst. Readers will be able to understand the entire gold area and find solutions to problems in catalysis.Gold Catalysis — An Homogeneous Approach is part of the Catalytic Science Series and features prominent authors who are experts in their respective fields.
Download or read book Homogeneous Gold Catalysis written by LeGrande M. Slaughter and published by Springer. This book was released on 2015-03-30 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students.
Download or read book Gold catalyzed Synthesis of 2 aminoquinolines and Alkynyloxazolines written by Ximei Zhao and published by . This book was released on 2019* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Au Catalyzed Synthesis and Functionalization of Heterocycles written by Marco Bandini and published by Springer. This book was released on 2016-07-01 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Heterocyclic Chemistry presents critical reviews on present and future trends in the research of heterocyclic compounds. Overall the scope is to cover topics dealing with all areas within heterocyclic chemistry, both experimental and theoretical, of interest to the general heterocyclic chemistry community. The series consists of topic related volumes edited by renowned editors with contributions of experts in the field. All chapters from Topics in Heterocyclic Chemistry are published Online First with an individual DOI. In references, Topics in Heterocyclic Chemistry is abbreviated as Top Heterocycl Chem and cited as a journal
Download or read book New Gold Catalyzed Reactions and Applications for the Synthesis of Alkaloids written by Ana Escribano Cuesta and published by Springer Science & Business Media. This book was released on 2013-08-13 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ana Escribano Cuesta's thesis presents a detailed study of the inter- and intramolecular reactions of carbonyl compounds with 1,6-enynes using gold (I) complexes. An important part of the work involved streamlining the variables that allow the selective synthesis of different products such as tricyclic compounds, dihydropyrans, 1,3-dienes or cyclobutenes. The second chapter highlights the importance and difficulties in synthesising a cyclobutene subunit and the author includes a detailed description of how the products were prepared. The final chapter outlines the synthesis of lundurines using methodology developed by the author's research group for intramolecular gold-catalyzed cyclization of indoles with alkynes. The lundurine products developed in this work show significant in vitro cytoxicity toward B16 melanoma cells. The work in this thesis has led to a number of publications in high-profile chemistry journals.
Download or read book Gold catalyzed Synthesis of Aza heterocyclic Compounds and Metal free Intermolecular 1 3 dipolar Cycloaddition Reaction written by Yufeng Wu and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold I Catalyzed Synthesis of Polycyclic Frameworks Related to Terpenes Selective Divergent Synthesis of Fused Carbocycles written by Francis Barabe and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Mechanistic Investigations of Gold Catalyzed Reactions written by Nathan David Shapiro and published by . This book was released on 2010 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, chemists have been motivated by problems in total synthesis or by a desire to develop reactions of broad utility. In answer to these challenges, several approaches to fundamental research have been developed. In chapter 1, we describe how our reactivity-driven approach has led to the discovery of numerous synthetic tools. The development of new synthetically useful methodology often rests on an understanding of the mechanistic underpinnings of the desired transformation. This is particularly true when this knowledge forms the basis for subsequent mechanistic proposals. The coordination of an alkyne to a cationic Au(I) complex represents the prototypical mechanistic starting place for many Au(I)-catalyzed reactions. In chapter two, we describe the isolation and characterization of a gold(I)-coordinated alkyne. The crystal structure of this compound is compared to related Ag(I) and Cu(I) compounds. With these structures in hand, we can begin to understand the unique ability of Au(I) complexes to serve as effective %pi;-activation catalysts, especially in understanding why gold is often more effective than copper or silver. In addition to being able to activate %pi;-bonds toward nucleophilic attack, it has been proposed that gold is also capable of stabilizing adjacent carbocations. Such species (i.e. [L-Au-CR2]+) have been referred to as gold-carbenoids or gold-stabilized carbocations. In chapter 3, we describe a bonding model for these intermediates that suggests that while the gold-carbon bond order is generally less than or equal to one, this bond includes both %sigma;- and %pi;-type bonding. Furthermore, the position of a given Au-stabilized intermediate on a continuum ranging from gold-stabilized singlet carbene to gold-coordinated carbocation is dictated by both the carbene substituents and the ancillary ligand. This model provides an explanation for observed ancillary ligand effects and should enable more efficient reaction optimization. In chapter 4, a series of gold(I)-catalyzed rearrangement reactions of alkynyl sulfoxides, sulfimides and sulfur ylides are reported. Homopropargyl sulfoxides are rearranged to benzothiepinones or benzothiopines, while %alpha;-thioenones are formed in the reaction of propargyl sulfoxides. It is proposed that these reactions proceed via an %alpha;-carbonyl gold-carbenoid intermediate formed through gold-promoted oxygen atom transfer from sulfoxide to alkyne. In chapter 5, the development of a convenient gold(III)-catalyzed synthesis of azepines from the intermolecular annulation of propargyl esters and %alpha;, %beta;-unsaturated imines is discussed. Mechanistic experiments suggest that this formal [4 + 3]-cycloaddition reaction proceeds via a stepwise process involving intermolecular trapping of a gold-carbenoid intermediate and subsequent intramolecular trapping of the resulting allyl-gold intermediate. In chapter 6, we discuss the gold(III)-catalyzed [3+3]-cycloaddition reaction of propargyl esters and azomethine imines. This reaction provides a rapid entry into a wide range of substituted tetrahydropyridazine derivatives from simple starting materials. A mechanism similar to that proposed in chapter 5 is discussed, along with a detailed description of the consequences of this mechanism on the diastereoselectivity of the annulation reaction. In addition, a strategy for rendering this reaction asymmetric is presented.
Download or read book Innovative Catalysis in Organic Synthesis written by Pher G. Andersson and published by John Wiley & Sons. This book was released on 2012-05-14 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: C-H, C-O, C-C, and C-Heteroatom bond forming processes by using metal-ligand approaches for the synthesis of organic compounds of biological, pharmacological and organic nanotechnological utility are the key areas addressed in this book. Authored by a European team of leaders in the field, it brings together innovative approaches for a variety of catalysis reactions and processes frequently applied in organic synthesis into a handy reference work. It covers all major types of catalysis, including homogeneous, heterogeneous, and organocatalysis, as well as mechanistic and computational studies. Special attention is paid to the improvements in efficiency and sustainability of important catalytic processes, such as selective oxidations, hydrogenation, and cross-coupling reactions, and to their utilization in industry. The result is a valuable resource for advanced researchers in both academia and industry, as well as graduate students in organic chemistry aiming for chemo-, regio- or stereoselective synthesis of organic compounds by using novel catalytic systems.
Download or read book Advances in Organometallic Chemistry written by Pedro J. Perez and published by Academic Press. This book was released on 2021-06-17 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Organometallic Chemistry, Volume 76, the latest release in this longstanding serial is known for its comprehensive coverage of topics in organometallic synthesis, reactions, mechanisms, homogeneous catalysis, and more. It is ideal for a wide range of researchers involved in organometallic chemistry, including synthetic protocols, mechanistic studies and practical applications. - Contains contributions from leading authorities in the field of organometallic chemistry - Covers topics in organometallic synthesis, reactions, mechanisms, homogeneous catalysis, and more - Informs and updates readers on the latest developments in the field - Carefully edited to provide easy-to-read material
Download or read book Environmental Catalysis over Gold Based Materials written by George Avgouropoulos and published by Royal Society of Chemistry. This book was released on 2013-07-18 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the major developments in hydrogen-related catalytic and electrocatalytic reactions over gold-based materials over the last decade, including many of the advances made by academic and industrial researchers. Gold-based catalysts with potentially exciting new applications in hydrogen technology (e.g. purification of hydrogen, anode/cathode electrodes) are being investigated at a much higher rate than even before. A variety of techniques to synthesize, characterize and evaluate these materials is being employed. The book will be of interest to all those working in catalysis/green chemistry, in particular, to advanced level researchers in catalysis using gold-based materials. It is hoped that specialists in one reaction will read with interest the chapters on the neighbouring expertise. The book is also meant for PhD-students and advanced students interested in this area.
Download or read book Gold Catalyzed Cycloisomerization Reactions Through Activation of Alkynes written by Antoine Simonneau and published by Springer. This book was released on 2014-05-21 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antoine Simonneau's thesis highlights the development of new cycloisomerization reactions through the activation of alkynes with gold complexes. First Simonneau describes 1,6-enynes and their direct conversion into allenes through 1,5-hydride or ester migration processes. The author and his team used appropriate propargylic functional groups to achieve this conversion. This study shows that O-tethered 1,6-enynes carrying a strained cycloalkane at the propargylic position could undergo a cyclopropanation/ring expansion cascade reaction. The author employed this rearrangement as the starting point in the design of a new macro cycle synthesis. The next part of the thesis focuses on the cycloisomerization of diynes involving as the first step of the process the rearrangement of one alkyne partner into an allene thanks to a gold-catalyzed 1,3-shift of a propargylic ester. The thesis discloses a new cycloisomerization pattern featuring a 1,5-carbonyl transfer, giving rise to unprecedented cross-conjugated diketones. In the final part of the research, Simmoneau investigates the gold-catalyzed cycloisomerization mechanism of 1,6-enynes and questions the intermediacy of gold acetylides. By the means of NMR and mass spectrometry analysis, theoretical treatment and solution experiments, it was possible to rule out the involvement of these species in the catalytic cycle. This thesis has led to a number of publications in high-impact journals.
Download or read book Organic Reaction Mechanisms 2012 written by A. C. Knipe and published by John Wiley & Sons. This book was released on 2015-04-16 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Reaction Mechanisms 2012, the 48th annual volume in this highly successful and unique series, surveys research on organic reaction mechanisms described in the available literature dated 2012. The following classes of organic reaction mechanisms are comprehensively reviewed: 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 Polar Addition Reactions Cycloaddition Reactions Molecular Rearrangements An experienced team of authors compiled these reviews, ensuring the quality of selection and presentation.
Download or read book Catalysis By Gold written by Geoffrey C Bond and published by World Scientific. This book was released on 2006-08-15 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold has traditionally been regarded as inactive as a catalytic metal. However, the advent of nanoparticulate gold on high surface area oxide supports has demonstrated its high catalytic activity in many chemical reactions. Gold is active as a heterogeneous catalyst in both gas and liquid phases, and complexes catalyse reactions homogeneously in solution. Many of the reactions being studied will lead to new application areas for catalysis by gold in pollution control, chemical processing, sensors and fuel cell technology. This book describes the properties of gold, the methods for preparing gold catalysts and ways to characterise and use them effectively in reactions. The reaction mechanisms and reasons for the high activities are discussed and the applications for gold catalysis considered./a
Download or read book Gold Chemistry written by Fabian Mohr and published by John Wiley & Sons. This book was released on 2009-04-20 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by world-class authors, this most recent major book on the topic highlights new and current trends as well as future directions. It is comprehensive in its scope, covering all aspects of gold chemistry -- from homogeneous to heterogeneous catalysis, from supramolecular assemblies to sensors and medicinal applications. The result is an invaluable work for both organic and inorganic chemists working in universities and industry, as well as material scientists.
