Iron Catalysed Hydrofunctionalisation Of Alkenes And Alkynes
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Iron Catalysed Hydrofunctionalisation Of Alkenes And Alkynes
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Author : Mark Greenhalgh
language : en
Publisher: Springer
Release Date : 2016-05-06
Iron Catalysed Hydrofunctionalisation Of Alkenes And Alkynes written by Mark Greenhalgh and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-06 with Science categories.
This thesis gives a thorough account of the development of iron-catalysed hydrosilylation, hydroboration and hydromagnesiation reactions. With extraordinary referencing and scientific argument, Mark Greenhalgh describes the development of methodologies which require only commercially available materials and non-specialised techniques. The intention of this approach is to ensure the science can be adopted widely by the chemical community. In addition to an insight into the processes involved in methodology development, Greenhalgh discusses and determines the relevant reaction mechanisms. This thesis provides not only the most thorough review of the area, but offers a level of insight well beyond that expected from a Ph.D. student. The work in this thesis has been published at the highest level, and the results and ideas have led to 3 industry-funded Ph.D. studentships and grant income in excess of £1 million.
Base Metal Catalysis 2
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Author : Naohiko Yoshikai
language : en
Publisher: Georg Thieme Verlag
Release Date : 2023-09-06
Base Metal Catalysis 2 written by Naohiko Yoshikai and has been published by Georg Thieme Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-09-06 with Science categories.
Recent advances in catalytic methods based on earth-abundant metals are discussed. Catalysis with earth-abundant metals, often referred to as base metals, is having a transformative impact on synthetic chemistry. Research in this area is driven not only by the common interest in the sustainability of chemical synthesis but also by the vast opportunity to discover and develop novel reaction chemistry that is not attainable with rare and precious metal catalysts. This work provides representative developments in base-metal catalysis, specifically catalysis with 3d-transition metals, in a format suitable for practitioners of organic synthesis. Volume 2 is focused on recent advances in catalysis involving cobalt, iron, manganese, and chromium. Topics covered include various types of cross-coupling processes, hydrofunctionalization of alkenes and alkynes, C-H functionalizations, and catalytic Nozaki–Hiyama–Kishi-type reactions.
Electrochemical Induced Hydrofunctionalizations Of Alkenes And Alkynes
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Author : Yahui Zhang
language : en
Publisher: OAE Publishing Inc.
Release Date : 2024-03-01
Electrochemical Induced Hydrofunctionalizations Of Alkenes And Alkynes written by Yahui Zhang and has been published by OAE Publishing Inc. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-03-01 with Science categories.
The hydrofunctionalizations of readily available alkenes and alkynes are one of the most effective and useful routes to afford diverse value-added compounds. Although traditional hydrofunctionalization strategies catalyzed by metal catalysts present convenient approaches, they are also accompanied by resource consumption and environmental crisis. Electrosynthesis, as a renewable and sustainable technology, has become a cost- and atom-efficient and useful synthetic route. In this review, the electrochemical-induced hydrofunctionalizations of alkenes and alkynes are summarized and presented. In each section, the electrochemical synthetic strategy to access hydrogenation and other hydrofunctionalization (hydroboration, hydrosilylation, hydroalkylation, hydroalkoxylation, hydrocyanation, hydrocarboxylation, etc.) products are elaborated in detail separately. Finally, the current challenges and prospects for electrochemical hydrofunctionalizations of unsaturated carbon‒carbon (C‒C) bonds are also discussed briefly.
Synthesis And Applications In Chemistry And Materials In 4 Volumes
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Author : Armando J L Pombeiro
language : en
Publisher: World Scientific
Release Date : 2024-01-16
Synthesis And Applications In Chemistry And Materials In 4 Volumes written by Armando J L Pombeiro and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-01-16 with Science categories.
Chemistry and Material Sciences naturally depend greatly on Synthesis as the initial stage for the existence of compounds and materials with desired behaviors, within the overall streamline of Design/Synthesis — Properties — Application/Function, and their relations. Such a general approach is of a too wide scope to be properly treated in a single set of publications, but this one on 'Synthesis and Applications in Chemistry and Materials' restricts itself by aiming to show the strength and international character of the current research in synthetic chemistry that is being developed in Portugal or abroad by teams that cooperate with this country. Hence, it gathers representative contributions of main Portuguese research groups and foreign collaborating ones. Nevertheless, the topic should be understood in a wide sense, being open to types of studies with significance on sustainable synthesis and applications in chemistry, materials and/or related sciences.
Coupling Of Iron 0 Carbene Complexes With Alkenes And Alkynes
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Author : Wayne Francis Kenneth Schnatter
language : en
Publisher:
Release Date : 1987
Coupling Of Iron 0 Carbene Complexes With Alkenes And Alkynes written by Wayne Francis Kenneth Schnatter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
C X Bond Formation
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Author : Arkadi Vigalok
language : en
Publisher: Springer
Release Date : 2010-06-30
C X Bond Formation written by Arkadi Vigalok and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-06-30 with Science categories.
Contents: Kilian Muñiz: Transition Metal Catalyzed Electrophilic Halogenation of C-H bonds in alpha-Position to Carbonyl Groups; Arkadi Vigalok * and Ariela W Kaspi: Late Transition Metal-Mediated Formation of Carbon-Halogen Bonds; Paul Bichler and Jennifer A. Love*: Organometallic Approaches to Carbon-Sulfur Bond Formation; David S. Glueck: Recent Advances in Metal-Catalyzed C-P Bond Formation; Andrei N. Vedernikov: C-O Reductive Elimination from High Valent Pt and Pd Centers; Lukas Hintermann: Recent Developments in Metal-Catalyzed Additions of Oxygen Nucleophiles to Alkenes and Alkynes; Moris S. Eisen: Catalytic C-N, C-O and C-S bond formation promoted by organoactinide complexes.
New Transformations In The Transition Metal Catalyzed Hydrofunctionalization Of Alkynes
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Author : Megan Armstrong
language : en
Publisher:
Release Date : 2021
New Transformations In The Transition Metal Catalyzed Hydrofunctionalization Of Alkynes written by Megan Armstrong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Hydrofunctionalization reactions are very useful transformations of unsaturated compounds and their development has been a major focus of research in the field of transition metal catalysis. These reactions allow the rapid build up of molecular complexity of simple substrates in a single transformation and recently significant progress has been made in the development of regio-, stereo- and enantioselective hydrofunctionalizations. Here we describe the development of three reactions involving transition metal-catalyzed hydrofunctionalization. The first is the hydroallylation of alkynes furnishing skipped dienes. Regioselective hydroallylation of nonsymmetrical internal alkynes was achieved through the installation of polar functional group in the propargylic position. This resulted in inductive polarization of the alkyne bond allowed for the regioselective synthesis of trisubstituted alkenes. The second reaction described is the diastereodivergent hydroarylation of alkynes. Both Z- and E-styrenes are accessed from one set of starting materials using synergistic Cu/Pd catalysis. The reaction proceeds through tandem Sonogashira cross-coupling followed by Z-selective semireduction and isomerization, where the diastereoselectivity is determined by the stoichiometry of a methanol additive. The last reaction describes the reductive three-component coupling of terminal alkynes, aryl halides and pinacolborane using synergistic Cu/Pd catalysis. Copper-catalyzed hydroboration followed by hydrocupration generates a key heterobimetallic complex, subsequent palladium-catalyzed cross-coupling with aryl halides provides benzylic alkyl boronates. Investigation of other electrophiles and enantioselective variants is currently underway.
Nickel And Cobalt Catalyzed Hydrofunctionalization Reaction Of Alkene
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Author : Balaram Raya
language : en
Publisher:
Release Date : 2016
Nickel And Cobalt Catalyzed Hydrofunctionalization Reaction Of Alkene written by Balaram Raya 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.
Organic reactions catalyzed by metal complexes are an effective way to improve atom economy and environmental friendliness for many synthetic transformations. Among the various synthetic transformations, hydrosilylation reaction has huge industrial applications for manufacturing consumer goods. The alkylsilanes from alkene hydrosilylation are widely used as raw materials in manufacturing silicon rubbers, molding implants and adhesive. The hydrosilylation reactions can also produce various organosilicon reagents, which are used in fine chemical synthesis for stereospecific oxidation and cross coupling reaction. Over the long decades, numerous reports on metal-catalyzed hydrosilylations include the use of platinum, palladium, rhodium, ruthenium, iridium, lanthanides and actinides, early transition metals, iron, cobalt to a limited extent nickel. This work has shown that readily accessible (iPrPDI)CoCl2 reacts with 2 equivalents NaEt3BH at -78 oC in toluene to generate a catalyst that effects highlyselective anti-Markovnikov hydrosilylation of the terminal double bond in alkene, 1,3- and 1,4-dienes. Primary and secondary silanes such as PhSiH3, Ph2SiH2 and PhSi(Me)H2 react with a broad spectrum of dienes without affecting the configuration of the other double bond. A slight modification of the reaction conditions using a less reactive silane (OEt)2Si(Me)H leads to unprecedented and highly selective reduction of the terminal double bond with no contamination from the silane or reduction products of the more substituted double bond. The major limitation for cobalt catalyzed hydrosilylation reaction using redox active PDI ligand is its terminal selectivity. However, this active catalyst did not work for 1,1-disubstituted alkenes. In this connection, we also observed efficient cobalt catalyst system for hydrosilylation of 1,1-disubstituted alkenes using chelating phosphine ligand at room temperature, which is able to do hydrosilylation for numerous substrates such as alkene, vinyl arene, conjugated diene, 1,4-skipped diene and 1,1-disubstituted alkenes. Carbocyclizations of a,¿-p-systems are extremely important and useful reactions for the synthesis of a variety of carbocyclic and heterocyclic compounds. Although metal catalyzed cyclization has been long known, controlling the selectivity (chemo- and regio-) remains an important challenge in this field. Nickel complexes have been known to be specifically effective for cyclic homo-and co-oligomerization of alkenes, alkynes and dienes. During the past few years, through an approach that relied mostly on mechanistic insights and systematic examination of ligand effects, RajanBabu group has discovered a number of protocols for Ni(II)-catalyzed heterodimerization reactions of vinylarenes, selected 1,3-dienes and strained olefins. Substitution of one of the phenyl groups of triphenylphosphine with a 2-benzyloxy-(e.g., L18), 2-benzyloxy-methyl-(L19) or 2-benzyloxyethyl-(L20) phenyl moiety results in a set of simple ligands, which exhibit strikingly different behavior in various nickel (II)-catalyzed olefin dimerization reactions including related cycloisomerization of 1,6-dienes. Nickel(II)-catalyzed cycloisomerization of 1,6-dienes into methylenecyclopentanes, a reaction mechanistically related to the other heterodimerization reactions, is also uniquely affected by nickel(II) complexes of L18, but not of L19 or L20. In an attempt to prepare authentic samples of the methylenecyclohexane products, nickel(II) complexes of N-heterocyclic carbene ligands were examined. In contrast to the phosphine, which gives the methylenecyclopentanes, methylenecyclohexanes are the major products in the N-heterocyclic carbine ligated nickel (II)-mediated reaction. This dissertation discusses the ligand effect on hydrofuctionalization of alkenes using nickel or cobalt metal complexes.
Iron Catalysis
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Author : Bernd Plietker
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-01-05
Iron Catalysis written by Bernd Plietker and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-05 with Science categories.
Juan I. Padrón and Víctor S. Martín: Catalysis by means of Fe-based Lewis acids; Hiroshi Nakazawa*, Masumi Itazaki: Fe–H Complexes in Catalysis; Kristin Schröder, Kathrin Junge, Bianca Bitterlich, and Matthias Beller: Fe-catalyzed Oxidation Reactions of Olefins, Alkanes and Alcohols: Involvement of Oxo- and Peroxo Complexes; Chi-Ming Che, Cong-Ying Zhou, Ella Lai-Ming Wong: Catalysis by Fe=X Complexes (X=NR, CR2); René Peters, Daniel F. Fischer and Sascha Jautze: Ferrocene and Half Sandwich Complexes as Catalysts with Iron Participation; Markus Jegelka, Bernd Plietker: Catalysis by Means of Complex Ferrates.
Iron Catalysis Design And Applications
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Author : Jose M Palomo
language : en
Publisher: World Scientific
Release Date : 2021-03-15
Iron Catalysis Design And Applications written by Jose M Palomo and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-15 with Science categories.
Iron Catalysis: Design and Applications is an exciting new book that takes readers inside the world of iron catalysis guided by international catalysis expert, Dr Jose M Palomo. Iron is the most abundant metal in the planet, cost-effective, environmentally friendly, with an easily manipulated remediation process. In the last few years the use of this nonprecious metal has gained extraordinary attention particularly for its potential as a catalyst in different areas. This book compiles a series of chapters describing the most significant advances in the last few years since the design of different iron catalysts and nanocatalysts and iron-containing artificial and natural enzymes. The chapters also cover its application in different areas of interest such as organic synthesis, environmental remediation, enzyme-like activities or the creation of novel types of electrodes for battery design.