Download or read book Supported Palladium Catalysts In Organic Synthesis written by Arjun Kumbhar and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research in catalysis particularly cross coupling reactions catalyzed by transition metals is a major field in applied sciences and involves many areas of chemistry. In the last few years, there is upsurge in the area of heterogeneous catalysis for chemical industries. Transition metal chemistry (particularly Pd based) complements traditional functional-group-based chemistry and significantly broadens the scope of organic chemistry. For the past 20 years, numerous research groups have developed new metal complexes and ligands, expanding the scope of these transformations. The importance of these transformations and their impact on synthetic chemistry have been recently recognized by awarding Nobel Prize in Chemistry for the year 2010 to Professor Heck, Negishi and Suzuki jointly.

Download or read book Immobilized Catalysts written by Andreas Kirschning and published by Springer Science & Business Media. This book was released on 2004-11-22 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: R. Haag, S. Roller: Polymeric Supports for the Immobilisation of Catalysts .- J. Horn, F. Michalek, C.C. Tzschucke, W. Bannwarth: Non-Covalently Solid-Phase Bound Catalysts for Organic Synthesis .- Y. Uozumi: Recent Progress in Polymeric Palladium Catalysts for Organic Synthesis .- D.E. Bergbreiter, J. Li: Applications of Catalysts on Soluble Supports .- B. Desai, C.O. Kappe: Microwave-Assisted Synthesis Involving Immobilized Catalysts .- A. Kirschning, G. Jas: Applications of Immobilized Catalysts in Continuous Flow Processes .- N. End, K.-U. Schöning: Immobilized Catalysts in Industrial Research and Application .- N. End, K.-U. Schöning: Immobilized Biocatalysts in Industrial Research and Production

Download or read book Palladium in Organic Synthesis written by Jiro Tsuji and published by Springer Science & Business Media. This book was released on 2005-07-06 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: with contributions by numerous experts

Download or read book Palladium Reagents and Catalysts written by Jiro Tsuji and published by Wiley. This book was released on 2004-06-25 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jiro Tsuji, one of the pioneers in this field of organic synthesis, provides synthetic organic chemists with a remarkable overview of the many applications of organopalladium chemistry. Tsuji discusses the recent developments in the field as well as the explosive growth over the last five years. Highlighting the most recent discoveries in this rapidly expanding field, the book; Focuses on new aspects of organopalladium chemistry, putting emphasis on synthetic applications Investigates the new perspectives on the synthetic uses of contemporary organopalladium chemistry This volume, together with Innovations in Organic Synthesis, Tsuji's previous title, provides complete coverage of over 40 years of organopalladium chemistry. Palladium Reagents and Catalysts: New Perspectives for the 21st Century is an essential reference source and companion for students, and both industrial and academic research chemists working in organic synthesis, particularly on synthesis of natural products and medicinal compounds. Those studying development of new synthetic methodology and organometallic chemistry will also find this book valuable.

Download or read book Palladium Reagents and Catalysts written by Jiro Tsuji and published by John Wiley & Sons. This book was released on 2006-02-08 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jiro Tsuji, one of the pioneers in this field of organic synthesis, provides synthetic organic chemists with a remarkable overview of the many applications of organopalladium chemistry. Tsuji discusses the recent developments in the field as well as the explosive growth over the last five years. Highlighting the most recent discoveries in this rapidly expanding field, the book; Focuses on new aspects of organopalladium chemistry, putting emphasis on synthetic applications Investigates the new perspectives on the synthetic uses of contemporary organopalladium chemistry This volume, together with Innovations in Organic Synthesis, Tsuji's previous title, provides complete coverage of over 40 years of organopalladium chemistry. Palladium Reagents and Catalysts: New Perspectives for the 21st Century is an essential reference source and companion for students, and both industrial and academic research chemists working in organic synthesis, particularly on synthesis of natural products and medicinal compounds. Those studying development of new synthetic methodology and organometallic chemistry will also find this book valuable.

Download or read book Organic Synthesis with Palladium Compounds written by Jiro Tsuji and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Around 30 years ago the transition metal chemistry received great impulses. In the focus have been reactions of nickel and cobalt and herein especially their carbonyls. Also industrial processes have been developed. When the technical oxidation of ethylene with palladium chloride had been discovered, and a great number oflaboratory reactions, many groups have turned towards this subject. Apart from two important industrial processes - acetaldehyde and vinylacetate from ethylene - a great number of conversions and catalytic reactions with palladium compounds have been researched. Their mechanisms have been cleared up and have con tributed to a better understanding of the complex chemistry of palladium. Last but not least these reactions have also served for more understanding of organic transition metal compounds and catalyses in general. Numerous conventional reactions appear today in a different light. The effects of co-

Download or read book Palladium Reagents and Catalysts written by Jiro Tsuji and published by . This book was released on 1995 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic chemistry of organopalladium compounds; Classification of the reactions involving Pd(II) compounds and Pd(O) complexes.

Download or read book Handbook of Organopalladium Chemistry for Organic Synthesis written by Ei-ichi Negishi and published by John Wiley & Sons. This book was released on 2003-11-24 with total page 1697 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organized to provide maximum utility to the bench synthetic chemist. The editor is well-known for his work in exploring, developing, and applying organopalladium chemistry. Contributors include over 24 world authorities in the field.

Download or read book Palladium Catalyzed Coupling Reactions written by Árpád Molnár and published by John Wiley & Sons. This book was released on 2013-02-14 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook and ready reference brings together all significant issues of practical importance in selected topics discussing recent significant achievements for interested readers in one single volume. While covering homogeneous and heterogeneous catalysis, the text is unique in focusing on such important aspects as using different reaction media, microwave techniques or catalyst recycling. It also provides a comprehensive treatment of key issues of modern-day coupling reactions having emerged and matured in recent years and emphasizes those topics that show potential for future development, such as continuous flow systems, water as a reaction medium, and catalyst immobilization, among others. With its inclusion of large-scale applications in the pharmaceutical industry, this will equally be of great interest to industrial chemists. From the contents * Palladium-Catalyzed Cross-Coupling Reactions - A General Introduction * High-turnover Heterogeneous Palladium Catalysts in Coupling Reactions: the Case of Pd Loaded on Dealuminated Y Zeolites Palladium-Catalyzed Coupling Reactions with Magnetically Separable Nanocatalysts * The Use of Ordered Porous Solids as Support Materials in Palladium-Catalyzed Cross-Coupling Reactions * Coupling Reactions Induced by Polymer-Supported Catalysts * Coupling Reactions in Ionic Liquids * Cross-Coupling Reactions in Aqueous Media * Microwave-Assisted Synthesis in C-C and C-Heteroatom Coupling Reactions * Catalyst Recycling in Palladium-Catalyzed Carbon-Carbon Coupling Reactions * Nature of the True Catalytic Species in Carbon-Carbon Coupling Reactions with * Heterogeneous Palladium Precatalysts * Coupling Reactions in Continuous Flow Systems * Large-Scale Applications of Palladium-Catalyzed Couplings in the Pharmaceutical Industry

Download or read book Metal Based Catalysts in Organic Synthesis written by Manas Sutradhar and published by MDPI. This book was released on 2021-08-30 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysts play a crucial role in the path towards the transformation of organic compounds. This book describes the recent development of metal-based catalysis in organic synthesis. Applications of various catalysts to interesting organic transformations are discussed. It covers important organic reactions such as cyclohexane oxidation under different energy stimuli, use of Pd-nanoparticles for carbonylation of aniline, ammoximation of methyl ethyl ketone by Ni-modified TS-1 and carbozincation of substituted 2-alkynylamines. This book will be a useful reference for researchers in the field of catalysis, organic chemistry and materials science. It is also intended to attract the attention of researchers with an industrial interest.

Download or read book Polymer Supported Organic Catalysts written by Narendra Chauhan and published by CRC Press. This book was released on 2024-07-26 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer-supported organic catalysts are largely insoluble in most reaction solvents, which allows for easy recovery and recycling of the catalysts. They are generally stable, readily available, and environmental friendly, so they have attracted the interest of many synthetic chemists in the industrial and academic fields. In this book, different types of polymer-supported catalysts based on peptides, polystyrene, polyethers, poly(acrylic acid), poly(ethylene imine), poly(2-oxazoline), poly(isobutylene), poly(norbornene), etc., as well as metals are included with their synthetic organic synthesis applications. It is believed that this work will be of interest to organic chemists, material scientists, chemical engineers, polymer scientists and technologists.

Download or read book Palladium Assisted Synthesis of Heterocycles written by Navjeet Kaur and published by CRC Press. This book was released on 2019-05-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a compilation of the recent applications of palladium catalysts in organic synthesis. The book demonstrates that it is a highly dynamic research field. This methodology has emerged as a powerful tool for the efficient and chemoselective synthesis of heterocyclic molecules. In the past few years, several strategies have been pointed out to pursue more efficient, sustainable, and environment friendly chemical processes. Among those strategies, catalysis and the design of new processes that avoid the use of toxic reagents have been the focus of intense research.

Download or read book Palladium Catalyzed Oxidation of Hydrocarbons written by P. Henry and published by Springer Science & Business Media. This book was released on 1979-12-31 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of organometallic chemistry has emerged over the last twenty-five years or so to become one of the most important areas of chemistry, and there are no signs of abatement in the intense current interest in the subject, particularly in terms of its proven and potential application in catalytic reactions involving hydrocarbons. The development of the organometallic/ catalysis area has resulted in no small way from many contributions from researchers investigating palladium systems. Even to the well-initiated, there seems a bewildering and diverse variety of organic reactions that are promoted by palladium(II) salts and complexes. Such homogeneous reactions include oxidative and nonoxidative coupling of substrates such as olefins, dienes, acetylenes, and aromatics; and various isomerization, disproportionation, hydrogenation, dehydrogenation, car bonylation and decarbonylation reactions, as well as reactions involving formation of bonds between carbon and halogen, nitrogen, sulfur, and silicon. The books by Peter M. Maitlis - The Organic Chemistry of Palladium, Volumes I, II, Academic Press, 1971 - serve to classify and identify the wide variety of reactions, and access to the vast literature is available through these volumes and more recent reviews, including those of J. Tsuji [Accounts Chem. Res. , 6, 8 (1973); Adv. in Organometal. , 17, 141 (1979)], R. F. Heck [Adv. in Catat. , 26, 323 (1977)], and ones by Henry [Accounts Chem. Res. , 6, 16 (1973); Adv. in Organometal. , 13, 363 (1975)]. F. R. Hartley's book - The Chemistry of Platinum and Palladium, App!. Sci. Pub!.

Download or read book Solid Phase Organic Syntheses Volume 2 written by Peter J. H. Scott and published by John Wiley & Sons. This book was released on 2012-07-02 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrates solid-phase organic synthesis with palladium chemistry The Wiley Series on Solid-Phase Organic Syntheses keeps researchers current with major accomplishments in solid-phase organic synthesis, providing full experimental details. Following the validated, tested, and proven experimental procedures, readers can easily perform a broad range of complex syntheses needed for their own experiments and industrial applications. The series is conveniently organized into themed volumes according to the specific type of synthesis. This second volume in the series focuses on palladium chemistry in solid-phase synthesis, exploring palladium catalysts and reactions, procedures for preparation and utilization, ligands, and linker reactions. The first part of the volume offers a comprehensive overview of the field. Next, the chapters are organized into three parts: Part Two: Palladium-Mediated Solid-Phase Organic Syntheses Part Three: Immobilized Catalysts and Ligands Part Four: Palladium-Mediated Multifunctional Cleavage Each chapter is written by one or more leading international experts in palladium chemistry. Their contributions reflect a thorough examination and review of the current literature as well as their own first-hand laboratory experience. References at the end of each chapter serve as a gateway to the field's literature. The introduction of palladium-mediated, cross-coupling reactions more than thirty years ago revolutionized the science of carbon-carbon bond formation. It has now become a cornerstone of today's synthetic organic chemistry laboratory. With this volume, researchers in organic and medicinal chemistry have access to a single resource that explains the fundamentals of palladium chemistry in solid-phase synthesis and sets forth clear, step-by-step instructions for conducting their own syntheses.

Download or read book Catalyst Components for Coupling Reactions written by Gary A. Molander and published by John Wiley & Sons. This book was released on 2013-05-30 with total page 1749 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long awaited Handbook for all synthetic chemists working on coupling reactions, compiling all major catalyst components in use in the area. Consists of a compilation of articles taken from the EROS database, with the inclusion of about 20 newly commissioned catalysts/pre-catalysts/ligands that have made an impact in this area of synthetic organic chemistry. Includes catalyst systems used in Heck, Kumada-Tamao-Corriu, Suzuki-Miyaura, Hiyama-Hatanaka, Negishi, Migita-Kosugi-Stille, Buchwald-Hartwig, and Tsuji-Trost coupling reactions.

Download or read book Palladium and Nickel catalyzed C N Cross coupling Reactions Featuring Soluble Organic Bases written by Joseph Michael Dennis (Jr.) and published by . This book was released on 2020 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1: Breaking the Base Barrier: An Electron-Deficient Palladium Catalyst Enables the Use of a Common Soluble Base in C-N Coupling Due to the low intrinsic acidity of amines, palladium-catalyzed C-N cross-coupling plagued continuously by the necessity to employ strong, inorganic, or insoluble bases. To surmount the many Due to the low intrinsic acidity of amines, palladium-catalyzed C-N crosscoupling has been practical obstacles associated with these reagents, we utilized a commercially available dialkyl triarylmonophosphine-supported palladium catalyst that facilitates a broad range of C-N coupling reactions in the presence of weak, soluble bases. The mild and general reaction conditions show extraordinary tolerance for even highly base-sensitive functional groups. Additionally, insightful heteronuclear NMR studies using −15N-labeled amine complexes provide evidence for the key acidifying effect of the cationic palladium center. Chapter 2: Pd-Catalyzed C-N Coupling Reactions Facilitated by Organic Bases: Mechanistic Investigation Leads to Enhanced Reactivity in the Arylation of Weakly Binding Amines The ability to use soluble organic amine bases in Pd-catalyzed C-N cross-coupling reactions has provided a long-awaited solution to the many issues associated with employing traditional, heterogeneous reaction conditions. However, little is known about the precise function of these bases in the catalytic cycle or about the effect of variations in base structure on catalyst reactivity. We used 19F NMR to analyze the kinetic behavior of C-N coupling reactions facilitated by different organic bases. In the case of aniline coupling reactions employing DBU, the resting state was a DBU-bound oxidative addition complex, LPd(DBU)(Ar)X, and the reaction was found to be inhibited by base. Generally, however, depending on the binding properties of the chosen organic base, increasing the concentration of the base can have a positive or negative influence on the reaction rate. Furthermore, the electronic nature of the aryl triflate employed in the reaction directly affects the reaction rate. The fastest reaction rates were observed with electronically neutral aryl triflates, while the slowest were observed with highly electron-rich and electrondeficient substrates. We propose a model in which the turnover-limiting step of the catalytic cycle is dependent on the relative nucleophilicity of the base, compared to that of the amine. This hypothesis guided the discovery of new reaction conditions for the coupling of weakly binding amines, including secondary aryl amines, which were unreactive nucleophiles in our original protocol. Chapter 3: Use of a Droplet Platform to Optimize Pd-Catalyzed C-N Coupling Reactions Promoted by Organic Bases Recent advances in Pd-catalyzed carbon-nitrogen cross-coupling have enabled the use of soluble organic bases instead of insoluble or strong inorganic bases that are traditionally employed. The single-phase nature of these reaction conditions facilitates their implementation in continuous flow systems, high-throughput optimization platforms, and large-scale applications. In this work, we utilized an automated microfluidic optimization platform to determine optimal reaction conditions for the couplings of an aryl triflate with four types of commonly employed amine nucleophiles: anilines, amides, primary aliphatic amines, and secondary aliphatic amines. By analyzing trends in catalyst reactivity across different reaction temperatures, base strengths, and base concentrations, we have developed a set of general recommendations for Pd-catalyzed crosscoupling reactions involving organic bases. The optimization algorithm determined that the catalyst supported by the dialkyltriarylmonophosphine ligand AlPhos was the most active in the coupling of each amine nucleophile. Furthermore, our automated optimization revealed that the phosphazene base BTTP can be used to facilitate the coupling of secondary alkylamines and aryl triflates. Chapter 4: The Quest for the Ideal Base: Rational Design of a Nickel Precatalyst Enables Mild, Homogeneous C-N Cross-Coupling Palladium-catalyzed amination reactions using soluble organic bases have provided a solution to the many issues associated with heterogeneous reaction conditions. Still, homogeneous C-N crosscoupling approaches cannot yet employ bases as weak and economical as trialkylamines. Furthermore, organic base-mediated methods have not been developed for Ni(0/II) catalysis, despite some advantages of such systems over analogous Pd-based catalysts. We designed a new air-stable and easily prepared Ni(II) precatalyst bearing an electron-deficient bidentate phosphine ligand that enables the cross-coupling of aryl triflates with aryl amines using triethylamine (TEA) as base. The method is tolerant of sterically-congested coupling partners, as well as those bearing base- and nucleophile-sensitive functional groups. With the aid of density functional theory (DFT) calculations, we determined that the electron-deficient auxiliary ligands decrease both the pK[subscript a] of the Ni-bound amine and the barrier to reductive elimination from the resultant Ni(II)-amido complex. Moreover, we determined that precluding Lewis acid-base complexation between the Ni catalyst and the base, due to steric factors, is important for avoiding catalyst inhibition.

Download or read book Application of Transition Metal Catalysts in Organic Synthesis written by L. Brandsma and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Homogeneous catalysis is an important strategy for the synthesis of high-valued chemicals. L. Brandsma has carefully selected and checked the experimental procedures illustrating the catalytic use of copper, nickel, and palladium compounds in organic synthesis. All procedures are on a preparative scale, make economic use of solvents and catalysts, avoid toxic substances and have high yields.