Transition Metal Catalysis In Aerobic Alcohol Oxidation
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Transition Metal Catalysis In Aerobic Alcohol Oxidation
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Author : Francesca Cardona
language : en
Publisher: Royal Society of Chemistry
Release Date : 2015
Transition Metal Catalysis In Aerobic Alcohol Oxidation written by Francesca Cardona and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Science categories.
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.
Transition Metal Based Catalysts For Aerobic Alcohol Oxidation
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Author : Luke Rogan
language : en
Publisher:
Release Date : 2016
Transition Metal Based Catalysts For Aerobic Alcohol Oxidation written by Luke Rogan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Polyoxomolybdates As Green Catalysts For Aerobic Oxidation
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Author : Anjali Patel
language : en
Publisher: Springer
Release Date : 2014-11-22
Polyoxomolybdates As Green Catalysts For Aerobic Oxidation written by Anjali Patel and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-22 with Science categories.
Heterogeneously catalyzed selective oxidations of alcohols is a highly topical field. The first chapter of this brief describes the importance of the selective oxidation of alcohols and advantages of heterogeneous catalysts over conventional catalysts, use of environmentally benign oxidants, and the design of selective catalysts by tailoring of polyoxometalates at the molecular level. Chapter 2 describes synthesis, characterization 11-molybdophosphate based supported materials and their use as heterogeneous catalysts for oxidation of alcohols with molecular oxygen under solvent free mild reaction condition. ZrO2, Al2O3, MCM-41 and zeolite Hβ were used as supports. Chapter 3 describes synthesis, characterization of transition metals (Mn, Co, Ni, Cu)- substituted phosphomolybdates and their use as heterogeneous catalysts for oxidation of alcohols with molecular oxygen under solvent free mild reaction condition. Chapter 4 describes conclusive remarks for present catalytic systems.
Liquid Phase Aerobic Oxidation Catalysis
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Author : Shannon S. Stahl
language : en
Publisher: John Wiley & Sons
Release Date : 2016-07-13
Liquid Phase Aerobic Oxidation Catalysis written by Shannon S. Stahl and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-07-13 with Technology & Engineering categories.
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.
Mechanistic Studies Of Cu Catalyzed Aerobic Oxidation Reactions
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Author : Scott Douglas McCann
language : en
Publisher:
Release Date : 2017
Mechanistic Studies Of Cu Catalyzed Aerobic Oxidation Reactions written by Scott Douglas McCann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Chemical copper-catalyzed aerobic oxidation reactions exhibit complexities not present in similar oxidation reactions employing noble metal catalysts with traditional chemical oxidants like hypervalent iodines or peroxides. The oxidation of organic molecules involves the removal of two protons and two electrons. This inevitably requires two CuII catalyst molecules to participate in the net oxidation reaction due to the one-electron redox-state changes typically associated with Cu. Additionally, CuI must react with molecular oxygen, a ground-state triplet molecule and net four-electron oxidant, to regenerate the active CuII catalyst. Aspects of these complexities are addressed in this thesis. Nature has evolved to use Cu catalysts (often together with redox-active organic cocatalysts) to perform oxidation reactions that use O2 as the terminal oxidant. The oxidation of CuI by O2 has been the subject of extensive investigation over the past several decades, and many of these studies were inspired by enzyme active sites in biological systems. Biological systems have also revealed pathways whereby CuII can oxidize organic substrates, and several chemical Cu-based catalyst systems exhibit intriguing similarities to enzymatic active sites. Herein, studies of several chemical copper-catalyzed aerobic oxidation reactions are reported, and, in many cases, the reactivity is compared to closely related enzymatic reactions. Chapter 1 summarizes challenges, opportunities, and progress made by our research group toward achieving selective and efficient Cu-catalyzed aerobic oxidation reactions. Chapter 2 describes a mechanistic study of aerobic alcohol oxidation catalyzed by Cu together with redox-active organic azodicarboxylates. Chapter 3 explains how Cu produces a redox-active organic nitroxyl cocatalyst under catalytic conditions from a simple diamine precursor. Chapter 4 details the investigation of single-electron transfer from phenol substrates to CuII.
Biomimetic Oxidations Catalyzed By Transition Metal Complexes
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Author : Bernard Meunier
language : en
Publisher: World Scientific
Release Date : 2000-03-08
Biomimetic Oxidations Catalyzed By Transition Metal Complexes written by Bernard Meunier and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-03-08 with Science categories.
Since the classic work Metal-Catalyzed Oxidations of Organic Compounds (edited by R A Sheldon and J K Kochi, 1991), no book has been devoted to advances in the field of biomimetic oxidations, which was created nearly 18 years ago. This expanding research field is covered in this volume. All the different aspects of the modeling of oxidations catalyzed by metalloenzymes are dealt with.This invaluable book will be useful to postgraduates as well as researchers in academia and industry, and will also benefit second year university students.
Modern Oxidation Methods
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Author : Jan-Erling Bäckvall
language : en
Publisher: John Wiley & Sons
Release Date : 2011-08-02
Modern Oxidation Methods written by Jan-Erling Bäckvall and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-02 with Science categories.
While rust is an unwanted oxidation reaction, there are also many other useful oxidation reactions that are extremely important and number among the most commonly used reactions in the chemical industry. This completely revised, updated second edition now includes additional sections on industrial oxidation and biochemical oxidation. Edited by one of the world leaders in the field, high-quality contributions cover every important aspect from classical to green chemistry methods: - Recent Developments in Metal-catalyzed Dihydroxylation of Alkenes - Transition Metal-Catalyzed Epoxidation of Alkenes - Organocatalytic Oxidation. Ketone-Catalyzed Asymmetric Epoxidation of Alkenes and Synthetic Applications - Catalytic Oxidations with Hydrogen Peroxide in Fluorinated Alcohol Solvents - Modern Oxidation of Alcohols using Environmentally Benign Oxidants - Aerobic Oxidations and Related Reactions Catalyzed by N-Hydro xyphthalimide - Ruthenium-Catalyzed Oxidation for Organic Synthesis - Selective Oxidation of Amines and Sulfides - Liquid Phase Oxidation Reactions Catalyzed by Polyoxometalates - Oxidation of Carbonyl Compounds - Manganese-Catalyzed Oxidation with Hydrogen Peroxide - Biooxidation with Cytochrome P450 Monooxygenases By providing an overview of this vast topic, the book represents an unparalleled aid for organic, catalytic and biochemists working in the field.
Understanding Homogeneous And Heterogeneous Transition Metal Oxide Catalytic Systems For Partial Oxidation Reactions
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Author : Ehsan Moharreri
language : en
Publisher:
Release Date : 2019
Understanding Homogeneous And Heterogeneous Transition Metal Oxide Catalytic Systems For Partial Oxidation Reactions written by Ehsan Moharreri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Electronic dissertations categories.
Transition metal oxide-based systems as catalysts for oxidative reactions are studied. Utilizing aerobic oxygen as a cost-efficient and benign oxidant is explored for alcohol oxidation reactions. A detailed magnetic study is performed to understand the active phases of manganese oxide catalysts. The role of a well-known homogeneous copper oxide catalyst in an oxidation reaction is explored for making alcohols from aliphatic hydrocarbons. Finally, virtual screening techniques are explored in a preliminary study for materials discovery. In chapter I, aerobic transformation of alcohols is studied by mesoporous manganese oxide and cobalt oxide species. Catalyst optimization, characterization and substrate scope experimentation is performed for self-esterification of alcohols and aldehydes. In chapter II, a comprehensive magnetic characterization of mesoporous manganese oxide species is provided. While conventional methods do not lead to definitive phase determination, magnetic transitions and spin eco NMR techniques prove the mixed phase of meso MnOx materials. In chapter III, a synthetic copper complex is studied. The complex was modeled after the active site of particulate methane monooxygenase (pMMO). A detailed study of the complex structure, reaction medium and by- products showed that an important side reaction interfered with hydrocarbon oxidation. The nitrile solvent decomposes to amide by nucleophilic interactions from hydrogen peroxide. In the final chapter, preliminary computational screening tools are introduced. Extraction of geometrical features of molecular structures and evaluation of total energy with machine learning algorithms are performed and the ground work for application of such work to crystalline materials is proposed.
Redox Active Ligands
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Author : Marine Desage-El Murr
language : en
Publisher: John Wiley & Sons
Release Date : 2024-02-05
Redox Active Ligands written by Marine Desage-El Murr and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-05 with Science categories.
Redox-Active Ligands Authoritative resource showcasing a new family of ligands that can lead to better catalysts and promising applications in organic synthesis Redox-Active Ligands gives a comprehensive overview of the unique features of redox-active ligands, describing their structure and synthesis, the characterization of their coordination complexes, and important applications in homogeneous catalysis. The work reflects the diversity of the subject by including ongoing research spanning coordination chemistry, organometallic chemistry, bioinspired catalysis, proton and electron transfer, and the ability of such ligands to interact with early and late transition metals, lanthanides, and actinides. The book is divided into three parts, devoted to introduction and concepts, applications, and case studies. After the introduction on key concepts related to the field, and the different types of ligands and complexes in which ligand-centered redox activity is commonly observed, mechanistic and computational studies are described. The second part focuses on catalytic applications of redox-active complexes, including examples from radical transformations, coordination chemistry and organic synthesis. Finally, case studies of redox-active guanidine ligands, and of lanthanides and actinides are presented. Other specific sample topics covered include: An overview of the electronic features of redox-active ligands, covering their historical perspective and biological background The versatility and mode of action of redox-active ligands, which sets them apart from more classic and tunable ligands such as phosphines or N-heterocyclic carbenes Preparation and catalytic applications of complexes of stable N-aryl radicals Metal complexes with redox-active ligands in H+/e- transfer transformations By providing up-to-date information on important concepts and applications, Redox-Active Ligands is an essential reading for researchers working in organometallic and coordination chemistry, catalysis, organic synthesis, and (bio)inorganic chemistry, as well as newcomers to the field.
Noble Metal Heterogeneous Catalysts For Aerobic Alcohol Oxidation
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Author :
language : en
Publisher:
Release Date : 2015
Noble Metal Heterogeneous Catalysts For Aerobic Alcohol Oxidation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Transformation of hydrocarbon feedstocks to complex molecules found in the fine chemical, agro chemical, and pharmaceutical industries require selective oxidations to impart the desired functionality. Oxidation of alcohols is commonly done employing harsh and potentially hazardous oxidants with stoichiometric amounts of byproducts being produced. The use of O2 as the terminal oxidant provides a safe and environmentally benign alternative with selectivity control being realized through the use of a catalyst. The use of a Ru(OH)x/Al2O3 catalyst for the oxidation of alcohols to aldehydes or ketones was studied for applicability and scalability in a continuous process. The catalyst was found to undergo rapid deactivation in the first 50-100 turnovers. High yields of diverse aldehydes and ketones were realized in the continuous process over the deactivated Ru(OH)x/Al2O3 catalyst. The discovery of a new heterogeneous catalyst was accomplished through rapid admixture screening and optimization using design of experiment techniques. The optimized catalyst compositions of PdBi0.47Te0.09/C (PBT-1) and PdBi0.35Te0.23/C (PBT-2) were found to be very active and selective for the aerobic oxidation of 1-octanol to methyl octanoate. These optimized catalysts show high yields of many diverse methyl esters from the oxidation of alcohols, and their stability was demonstrated in a continuous process achieving nearly 60,000 turnovers with no apparent loss in activity. The role of the Bi and Te promoters and mechanism of the PBT-2 catalyst was explored through kinetic studies and characterization of the catalyst. Through the use of kinetics and other mechanistic probes we discovered that the reaction shows saturation dependence in [substrate] and [K2CO3] and is first order in pO2, supporting a Langmuir-Hinshelwood mechanism with the reaction occurring between alkoxide and O2 adsorbed to the catalyst. The promoters are proposed to protect the Pd catalyst from over oxidation to inactive PdOx species as well as prevent side reactions (Bi) and electronically modify the Pd (Te). Oxidation of alcohols to aldehydes or nitriles was demonstrated in a continuous process using a CuI/TEMPO catalyst. The oxidation to the nitrile was accomplished through the addition of anhydrous ammonia, and excellent yields were observed from the oxidation of diverse primary benzylic alcohols.
