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Author : Bradley A. Steinhoff
Publisher :
ISBN 13 :
Total Pages : 254 pages
Book Rating : 4.:/5 (89 download)
Download or read book Mechanistic Studies of Palladium-catalyzed Aerobic Alcohol Oxidation written by Bradley A. Steinhoff and published by . This book was released on 2005 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dian Wang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (122 download)
Download or read book Mechanistic Studies and Catalyst Development of Palladium-catalyzed Aerobic C-h Oxidations of (hetero)aromatics written by Dian Wang and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The selective oxidation of C-H bonds in (hetero)aromatics provides an efficient access to functionalized aromatic molecules of industrial interest. Aerobic oxygen is an ideal terminal oxidants for this transformation because it is readily available and often produces water as the sole byproduct. Homogeneous palladium catalysts are eminently compatible with aerobic turnovers and have seen success in numerous aerobic oxidation processes (e. g., alkene oxidation, alcohol oxidation). In contrast, palladium-catalyzed aerobic oxidative C-H functionalization has been rather underdeveloped. Challenges include slow catalytic turnover, catalyst decomposition and lack of selectivity control (e.g., site selectivity, homo- vs. cross-coupling selectivity). This thesis presents three research projects with different approaches to tackle the unsolved problems in the reaction class of palladium-catalyzed aerobic C-H oxidation of (hetero)aromatics. The reaction mechanism of C-H/C-H coupling of [o]-xylene was characterized, which disclosed a novel, bimetallic pathway. Built on this work, the effect of copper cocatalyst in this reaction was investigated, which revealed a non-traditional role of copper salt in oxidative palladium catalysis and led to the discovery of an improved catalyst system. Last, a synthetic methodology for aerobic indole C-H arylation with ligand-controlled site selectivity was developed, which provided efficient access to pharmaceutically-relevant aryl indoles and led to preliminary mechanistic insights into regiocontrol.
Author : Xuan Ye
Publisher :
ISBN 13 :
Total Pages : 219 pages
Book Rating : 4.:/5 (747 download)
Download or read book Mechanistic Studies of Palladium-catalyzed "Wacker-type" Intramolecular Aerobic Oxidative Amination of Alkenes and Development of Safe and Scalable Continuous-flow Methods for Palladium-catalyzed Aerobic Oxidation written by Xuan Ye and published by . This book was released on 2010 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jaime Ann Mueller
Publisher :
ISBN 13 :
Total Pages : 472 pages
Book Rating : 4.:/5 (611 download)
Download or read book Mechanistic Investigations of Palladium Catalyzed Aerobic Oxidations of Alcohols written by Jaime Ann Mueller and published by . This book was released on 2005 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. Henry
Publisher : Springer Science & Business Media
ISBN 13 : 940099446X
Total Pages : 449 pages
Book Rating : 4.4/5 (9 download)
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 2012-12-06 with total page 449 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!.
Author : Esteban Mejía
Publisher : Royal Society of Chemistry
ISBN 13 : 1839160349
Total Pages : 349 pages
Book Rating : 4.8/5 (391 download)
Download or read book Catalytic Aerobic Oxidations written by Esteban Mejía and published by Royal Society of Chemistry. This book was released on 2020-07-14 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxidation reactions are an important chemical transformation in both academia and industry. Among the major advances in the field has been the development of catalytic processes, which are not only selective and efficient, but also allow the replacement of common stoichiometric oxidants with molecular oxygen, ideally from air at atmospheric pressure. This results in processes with higher atom efficiency, where water is the only side product in line with the principles of green chemistry. Focusing on the use of molecular oxygen as the terminal oxidant, this book covers recent advances in both heterogeneous and homogeneous systems, with and without metals and on the “taming” of the highly reactive oxygen gas by use of micro-flow reactors and membranes. A useful reference for industrial and academic chemists working on oxidation processes, as well as green chemists.
Author : Shannon S. Stahl
Publisher : John Wiley & Sons
ISBN 13 : 3527337814
Total Pages : 454 pages
Book Rating : 4.5/5 (273 download)
Download or read book Liquid Phase Aerobic Oxidation Catalysis written by Shannon S. Stahl and published by John Wiley & Sons. This book was released on 2016-10-10 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book to place recent academic developments within the context of real life industrial applications, this is a timely overview of the field of aerobic oxidation reactions in the liquid phase that also illuminates the key challenges that lie ahead. As such, it covers both homogeneous as well as heterogeneous chemocatalysis and biocatalysis, along with examples taken from various industries: bulk chemicals and monomers, specialty chemicals, flavors and fragrances, vitamins, and pharmaceuticals. One chapter is devoted to reactor concepts and engineering aspects of these methods, while another deals with the relevance of aerobic oxidation catalysis for the conversion of renewable feedstock. With chapters written by a team of academic and industrial researchers, this is a valuable reference for synthetic and catalytic chemists at universities as well as those working in the pharmaceutical and fine chemical industries seeking a better understanding of these reactions and how to design large scale processes based on this technology.
Author : Francesca Cardona
Publisher : Royal Society of Chemistry
ISBN 13 : 1849738238
Total Pages : 304 pages
Book Rating : 4.8/5 (497 download)
Download or read book Transition Metal Catalysis in Aerobic Alcohol Oxidation written by Francesca Cardona and published by Royal Society of Chemistry. This book was released on 2015 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the search for environmentally benign procedures for the oxidation of alcohols and gives an overview of their transition-metal-catalyzed aerobic oxidation.
Author :
Publisher :
ISBN 13 : 9789155487850
Total Pages : 63 pages
Book Rating : 4.4/5 (878 download)
Download or read book Palladium-Catalyzed Nucleophilic Substitution of Alcohols written by and published by . This book was released on 2013 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Helena Grennberg
Publisher :
ISBN 13 : 9789155429638
Total Pages : 55 pages
Book Rating : 4.4/5 (296 download)
Download or read book Development and Mechanistic Studies of Palladium-catalysed Oxidations of Conjugated Dienes and Olefins written by Helena Grennberg and published by . This book was released on 1992 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John F. Hartwig
Publisher :
ISBN 13 :
Total Pages : 1172 pages
Book Rating : 4.:/5 (318 download)
Download or read book Organotransition Metal Chemistry: From Bonding to Catalysis written by John F. Hartwig and published by . This book was released on 2010-02-10 with total page 1172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on Collman et al.'s best-selling classic book, Principles and Applications of Organotransition Metal Chemistry, Hartwig's text consists of new or thoroughly updated and restructured chapters and provides an in-depth view into mechanism, reaction scope, and applications. It covers the most important developments in the field over the last twenty years with great clarity with a selective, but thorough and authoritative coverage of the fundamentals of organometallic chemistry, the elementary reactions of these complexes, and many catalytic processes occurring through organometallic intermediates, making this the Organotransition Metal Chemistry text for a new generation of scientists.
Author : Ronald Michael Painter
Publisher : Stanford University
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.F/5 ( download)
Download or read book The Chemoselective Catalytic Oxidation of Alcohols, Diols, and Polyols to Ketones and Hydroxyketones written by Ronald Michael Painter and published by Stanford University. This book was released on 2011 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemoselective oxidation of vicinal diols to α-hydroxyketones is a challenge in organic syntheses because not only does the diol need to be oxidized selectively to a monocarbonyl compound, but diols are also prone to overoxidation and oxidative cleavage. Employing a cationic palladium complex, [(neocuproine)Pd(OAc)]2(OTf)2, we were able to demonstrate the selective oxidation of glycerol to dihydroxyacetone mediated by either benzoquinone or O2 as the terminal oxidant, an accomplishment that has little precedent in homogeneous catalysis. Mechanistic studies were undertaken to uncover the nature of this remarkable chemoselectivity. Kinetic and deuterium-labeling studies implicate reversible β-hydride elimination from isomeric Pd alkoxides and turnover-limiting displacement of the dihydroxyacetone product by benzoquinone. We successfully extended this methodology to other terminal 1,2-diols and symmetric vicinal 1,2-diols and have carried out aerobic oxidation of these substrates catalyzed by 1. Examination of the reactivity of 1 with conformationally-restricted 1,2-cyclohexanediols suggests that the diol must chelate to the Pd center for effective oxidation to the hydroxyketone product. In a separate project, we have also investigated the electrocatalytic reduction of dioxygen by several dinuclear copper complexes, an important reaction for fuel cell applications.
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (891 download)
Download or read book Development, Application and Mechanistic Investigation of Palladium Catalyzed Aerobic Oxidative Amination Methods written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Palladium catalyzed oxidative transformations that employ readily available molecular oxygen as the stoichiometric oxidant enable economic synthetic routes to complex organic targets. This thesis focuses on the development of aerobic oxidative transformations that generate carbon-nitrogen bonds. Chapters 2 and 3 describe research projects that have expanded the scope and mechanistic understanding of reactions that involve amidopalladation of alkenes (aza-Wacker reactions). Chapters 4, 5 and 6 describe research projects that have targeted the discovery of aryl C-H amination reactions. Palladium catalyzed aerobic C-H amination reactions have limited precedent. Several approaches to address this challenge were tested, and promising results are discussed.
Author : Lukas John
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (847 download)
Download or read book Palladium Catalyzed Aerobic Oxidation of Alcohols written by Lukas John and published by . This book was released on 2013 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul Lawrence Rispoli
Publisher :
ISBN 13 :
Total Pages : 466 pages
Book Rating : 4.:/5 (731 download)
Download or read book Mechanistic Studies on Some Oxidation Reactions of Palladium(II) Complexes written by Paul Lawrence Rispoli and published by . This book was released on 1978 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Aiwen Lei
Publisher : John Wiley & Sons
ISBN 13 : 3527681019
Total Pages : 240 pages
Book Rating : 4.5/5 (276 download)
Download or read book Oxidative Cross-Coupling Reactions written by Aiwen Lei and published by John Wiley & Sons. This book was released on 2016-08-12 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first handbook on this emerging field provides a comprehensive overview of transition metal-catalyzed coupling reactions in the presence of an oxidant. Following an introduction to the general concept and mechanism of this reaction class, the team of authors presents chapters on C-C cross-coupling reactions using organometallic partners, C-Heteroatom bond forming reactions via oxidative couplings, and C-H couplings via C-H activation. The text also covers such groundbreaking topics as recent achievements in the fields of C-C and C-X bond formation reactions as well as C-H activation involving oxidative couplings. With its novel and concise approach towards important building blocks in organic chemistry and its focus on synthetic applications, this handbook is of great interest to all synthetic chemists in academia and industry alike.
Author : Brian M. Cochran
Publisher :
ISBN 13 :
Total Pages : 612 pages
Book Rating : 4.:/5 (465 download)
Download or read book The Development and Mechanistic Studies of Palladium Catalyzed Hydroamination and Metal-free Oxidative Amination Reactions written by Brian M. Cochran and published by . This book was released on 2009 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
