Author: Jarl Ivar van der VlugtPublisher:
ISBN: 9789038626758
Category :
Languages : en
Pages : 156
Book Description
Versatilve Phosphorus Ligands
Author: Jarl Ivar van der VlugtPublisher:
ISBN: 9789038626758
Category :
Languages : en
Pages : 156
Book Description
Phosphorus(III)Ligands in Homogeneous Catalysis
Author: Paul C. J. KamerPublisher: John Wiley & Sons
ISBN: 1118299701
Category : Technology & Engineering
Languages : en
Pages : 673
Book Description
Over the last 60 years the increasing knowledge of transition metal chemistry has resulted in an enormous advance of homogeneous catalysis as an essential tool in both academic and industrial fields. Remarkably, phosphorus(III) donor ligands have played an important role in several of the acknowledged catalytic reactions. The positive effects of phosphine ligands in transition metal homogeneous catalysis have contributed largely to the evolution of the field into an indispensable tool in organic synthesis and the industrial production of chemicals. This book aims to address the design and synthesis of a comprehensive compilation of P(III) ligands for homogeneous catalysis. It not only focuses on the well-known traditional ligands that have been explored by catalysis researchers, but also includes promising ligand types that have traditionally been ignored mainly because of their challenging synthesis. Topics covered include ligand effects in homogeneous catalysis and rational catalyst design, P-stereogenic ligands, calixarenes, supramolecular approaches, solid phase synthesis, biological approaches, and solubility and separation. Ligand families covered in this book include phosphine, diphosphine, phosphite, diphosphite, phosphoramidite, phosphonite, phosphinite, phosphole, phosphinine, phosphinidenene, phosphaalkenes, phosphaalkynes, P-chiral ligands, and cage ligands. Each ligand class is accompanied by detailed and reliable synthetic procedures. Often the rate limiting step in the application of ligands in catalysis is the synthesis of the ligands themselves, which can often be very challenging and time consuming. This book will provide helpful advice as to the accessibility of ligands as well as their synthesis, thereby allowing researchers to make a more informed choice. Phosphorus(III) Ligands in Homogeneous Catalysis: Design and Synthesis is an essential overview of this important class of catalysts for academic and industrial researchers working in catalyst development, organometallic and synthetic chemistry.
New Aspects in Phosphorus Chemistry I
Author: Jean-Pierre MajoralPublisher: Springer
ISBN: 3540457313
Category : Science
Languages : en
Pages : 250
Book Description
Undoubtedly the chemistry of phosphorus appears more and more attractive in the sense that phosphorus presents an extraordinary versatile behaviour that allows the synthesis of a large number of different phosphorus reagents usable for applications in different fields, from biology to material science without f- getting key applications in catalysis. The full maturity of this topic of research can be explained by all the acquired knowledge over these twenty last years. Organic and inorganic chemistries of P , P and P species have been the s- in ]V v ject of thousands of publications while the chemistry of low coordinated ph- phorus derivatives experienced its hour of glory from the 1970s to the early 1990s. In parallel, interactions between phosphorus compounds and transition metals afforded many complexes, a lot of which present fascinating properties as catalysts. The interest in all these themes really is not decreasing, indeed some fas- nating areas of research are emerging or are the subject of many investigations: the medicinal chemistry of bisphosphonates, the role of phosphorus in biology, phosphorus ligands in radiopharmaceutical chemistry, phosphorus in material science, new polymers and dendrimers incorporating phosphorus, and as- metric catalysis to name but a few. Indeed researchers, benefitting from their background in basic phosphorus chemistry are developing many new fields of research.
Contemporary Topics about Phosphorus in Biology and Materials
Author: David ChurchillPublisher: BoD – Books on Demand
ISBN: 1789850398
Category : Technology & Engineering
Languages : en
Pages : 216
Book Description
This book addresses a diverse set of topics regarding phosphorus chemistry, namely phosphates and closely related chemical systems. Divided into two sections, chapters cover such topics as phosphate dynamics and phosphates in biomaterials. This volume is a useful reference for scholars and researchers and will inspire readers to make future discoveries in the field.
Diallyphosphines and Phosphine-stabilized Germylenes as Versatile Ligands for Transition Metal Complexes
Author: Juan Manuel Garcia GarfidoPublisher:
ISBN:
Category :
Languages : en
Pages : 166
Book Description
Ligand hybrid design is becoming an increasingly important area of the synthetic activity in organometallic chemistry. The coordination chemistry of diallylphosphines and phosphine-stabilized germylenes has been studied in this thesis. In particular, phosphine-stabilized germylenes have not only been studied by its potential use as ligands for transition metals, but also as possible synthetic tools in organic chemistry. Diallylphosphine behave as bidentate ligands to stabilize cationic rhodium species of type [Rh(COD){?3(P,C,C)RP(CH2CH=CH2)2}][BF4] [R= iPr2N, tBu and Ph]. Hemilabile properties of diallylphosphine ligands have been demonstrated by ligand exchange reactions. In solution, a dynamic equilibrium of exchange between the two allylic double bonds was detected by low temperature NMR analysis. In the same way, the reversible displacement of coordinated allylic double bond by acetonitrile could be observed. Theoretical calculations have been performed to explain the experimental results for the order of reactivity on removing the acetonitrile under vacuum. Germylenes stabilized by coordination of a phosphine ligand have been synthesized and fully characterized. Reactivity studies showed that phosphine-stabilized germylenes are unreactive toward unsaturated compounds, such as: alkyne, alkene and carbonyl derivatives, but reactive toward 2,3-dimethylbutadiene. The reactivity of phosphine-stabilized germylenes toward transition metal complexes have been studied by reaction with the dimer complex [Rh2(μ-Cl2)(COD)2], demonstrating that phosphine-stabilized germylenes are useful ligands with high potential in organometallic chemistry. The first isolable germanium analogue of alkynes, known as germyne, stabilized by coordination of a phosphine ligand has been synthesized and fully characterized. Synthesized germynes rearrange at RT affording a phosphaalkene and a new stable N-heterocyclic germylene. Keywords: Hybrid ligands, hemilabile properties, coordination chemistry, diallylphosphines, phosphine-stabilized germylene, germyne.
Copper(I) Chemistry of Phosphines, Functionalized Phosphines and Phosphorus Heterocycles
Author: Maravanji S. BalakrishnaPublisher: Elsevier
ISBN: 9780128150528
Category : Science
Languages : en
Pages : 0
Book Description
Copper(I) Complexes of Phosphines, Functionalized Phosphines and Phosphorus Heterocycles is a comprehensive guide to one of the most widely used and extensively studied metals: copper. The numerous practical applications of copper compounds are discussed, including homogeneous and heterogeneous catalysis and their use as fungicides, pesticides, pigments for paints, resins and glasses, and in high-temperature superconductors. The remarkable structural flexibility of simple copper(I) complexes, such as cuprous halides is covered, including numerous structural motifs that, when combined with different ligand systems, exhibit linear, trigonal planar or tetrahedral geometries. This work is an essential reference for inorganic and coordination chemists, as well as researchers working on catalysis, anticancer reagents, luminescence, fluorescence and photophysical aspects.
Phosphorus(iii) Ligands in Homogeneous Catalysis
Author: Paul KamerPublisher: John Wiley & Sons
ISBN: 9781119943990
Category : Catalysis
Languages : en
Pages :
Book Description
Over the last 60 years the increasing knowledge of transition metal chemistry has resulted in an enormous advance of homogeneous catalysis as an essential tool in both academic and industrial fields. Remarkably, phosphorus(III) donor ligands have played an important role in several of the acknowledged catalytic reactions. The positive effects of phosphine ligands in transition metal homogeneous catalysis have contributed largely to the evolution of the field into an indispensable tool in organic synthesis and the industrial production of chemicals. This book aims to address the design and synthesis of a comprehensive compilation of P(III) ligands for homogeneous catalysis. It not only focuses on the well-known traditional ligands that have been explored by catalysis researchers, but also includes promising ligand types that have traditionally been ignored mainly because of their challenging synthesis. Topics covered include ligand effects in homogeneous catalysis and rational catalyst design, P-stereogenic ligands, calixarenes, supramolecular approaches, solid phase synthesis, biological approaches, and solubility and separation. Ligand families covered in this book include phosphine, diphosphine, phosphite, diphosphite, phosphoramidite, phosphonite, phosphinite, phosphole, phosphinine, phosphinidenene, phosphaalkenes, phosphaalkynes, P-chiral ligands, and cage ligands. Each ligand class is accompanied by detailed and reliable synthetic procedures. Often the rate limiting step in the application of ligands in catalysis is the synthesis of the ligands themselves, which can often be very challenging and time consuming. This book will provide helpful advice as to the accessibility of ligands as well as their synthesis, thereby allowing researchers to make a more informed choice. "Phosphorus(III) Ligands in Homogeneous Catalysis: Design and Synthesis" is an essential overview of this important class of catalysts for academic and industrial researchers working in catalyst development, organometallic and synthetic chemistry.
Ligand
Author: Chandraleka SaravananPublisher: BoD – Books on Demand
ISBN: 1789231825
Category : Science
Languages : en
Pages : 122
Book Description
The book Ligand describes the diversity and versatility of ligands, covering structural features, donor-acceptor properties and secondary functions like molecular recognition. Moreover, this book also provides a comprehensive account on the applicability like catalysis, sensors, supramolecular assembly, photochemical property, bioinorganic chemistry, and so on. The advancement of fundamentals in ligand design and the control of physicochemical properties of coordination compounds has largely increased emphasis on understanding the structural and electronic features toward different perspectives in materials science. In this regard, this book has a special appeal to chemists, biologists and others. This book will be beneficial for the graduate students, teachers, researchers and other professionals who are interested to fortify and expand their knowledge in chemistry, biology, microbiology, biotechnology, materials science, environmental science and so on.
Asymmetric Catalysis
Author: B. BosnichPublisher: Springer
ISBN: 9789401087919
Category : Science
Languages : en
Pages : 172
Book Description
The rate of advance in areas of science is seldom constant. Usually certain fields effloresce with activity because of the ~ealization that solutions are possible to long standing important problems. So it is now with asymmetric catalysis, a field which promises to change profoundly the strategic thinking of synthetic chemists. As this Report will show, reagents which can induce catalytic enantiocontrol of chemical transformations could represent the ultimate synthetic method. Nearly all synthetic strategies of complex molecules involve steps which require enantiocontrol and, in many cases, a specific catalytic transformation embodying enan tiocontrol has enormous advantages in terms of the rate and economy of the reaction. Because asymmetric catalysis is in a formative stage, workers with different backgrounds have joined the field. This Workshop had representatives with organometallic, organic, structural, kinetic, enzymatic, microbiological and industrial backgrounds. Each had his own perspective and this Report represents a consensus of this group of eleven people. The result is probably as compre hensive and balanced a view of the subject as is possible at present. It is hoped that those who have until now had but a glancing interest in asymmetric catalysis will find this Report a useful indication of its present state. We believe that asymmetric catalysis will have an increasing impact on the development of chemistry and will eventually dominate much of synthetic and industrial chemistry.
Phosphorus Ligands in Asymmetric Catalysis
Author: Armin BörnerPublisher:
ISBN:
Category : Asymmetric synthesis
Languages : en
Pages : 512
Book Description