Homogeneous Catalysis with Metal Phosphine Complexes
Homogeneous Catalysis with Metal Phosphine Complexes

Author: Louis M. Pignolet

Publisher: Springer Science & Business Media

Published: 2013-11-21

Total Pages: 494

ISBN-13: 1461336236

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The field of transition metal catalysis has experienced incredible growth during the past decade. The reasons for this are obvious when one considers the world's energy problems and the need for new and less energy demanding syntheses of important chemicals. Heterogeneous catalysis has played a major industrial role; however, such reactions are generally not selective and are exceedingly difficult to study. Homogeneous catalysis suffers from on-site engineering difficulties; however, such reactions usually provide the desired selectivity. For example, Monsanto's synthesis of optically-active amino acids employs a chiral homogeneous rhodium diphosphine catalyst. Industrial uses of homogeneous catalyst systems are increasing. It is not by accident that many homogeneous catalysts contain tertiary phosphine ligands. These ligands possess the correct steric and electronic properties that are necessary for catalytic reactivity and selectivity. This point will be emphasized throughout the book. Thus the stage is set for a comprehensive be treatment of the many ways in which phosphine catalyst systems can designed, synthesized, and studied.

Organometallic Chemistry of Five-Membered Heterocycles
Organometallic Chemistry of Five-Membered Heterocycles

Author: Alexander Sadimenko

Publisher: Elsevier

Published: 2019-10-16

Total Pages: 792

ISBN-13: 0081028601

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Organometallic Chemistry of Five-Membered Heterocycles explores the synthesis, coordination modes, reactivity of coordinated five-membered monoheterocycles, and organometallic complexes of their numerous derivatives, including chelating ligands, oligomers, and macrocycles. Beginning with the introduction of organometallic compounds, this book dives deep into the reactivity of coordinated five-membered monoheterocycles and the derivatives of fundamental ligands. This book is an ideal reference for researchers working in organometallic, heterocyclic, materials, or organic chemistry, and catalysis. The readers will gain a comprehensive understanding of modern synthetic methods, reactivity trends of heteroaromatic ligands, and the methods of modern materials construction.

31P and 13C NMR of Transition Metal Phosphine Complexes
31P and 13C NMR of Transition Metal Phosphine Complexes

Author: Paul S. Pregosin

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 164

ISBN-13: 3642488307

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For almost a quarter of a century the words "nuclear magnetic reso nance" were synonymous with proton I,leasurements. During this period the literature abounded with a seemingly infinite variety of 1H NHR studies concerned primarily with carbon chemistry. Occasionally a "novel" nucleus was studied and, even in those early days, the poten- 13 14 31 19 tial offered by C, N, P and F was clearly recognized. Despite the allure, the technical difficulties involved in measuring some of these nuclei were far from trivial. Small magnetic moments and low natural abundance in combination with spin-spin coupling from other nuclei, mostly protons, resulted in a signal-to-noise problem whose severity effectively excluded the study of metal complexes with unfa vorable solubility characteristics. The first important breakthrough came with the advent of broad band 1H-decoupling. For example, the featureless broad 31p resonance associated with the commonly used ligand triphenyl phosphine is converted to a sharp, more readily ob served singlet when wide-band decoupling is employed (see Fig. 1). Despite this improvement investigation of more interesting molecules, such as catalytically active complexes was forced to await the devel opment of Fourier Transform methods since only with relatively rapid signal averaging methods could sufficient signal-to-noise ratios be achieved.

Rhodium Catalyzed Hydroformylation
Rhodium Catalyzed Hydroformylation

Author: Piet W.N.M. van Leeuwen

Publisher: Springer Science & Business Media

Published: 2006-04-11

Total Pages: 291

ISBN-13: 0306469472

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In the last decade there have been numerous advances in the area of rhodium-catalyzed hydroformylation, such as highly selective catalysts of industrial importance, new insights into mechanisms of the reaction, very selective asymmetric catalysts, in situ characterization and application to organic synthesis. The views on hydroformylation which still prevail in the current textbooks have become obsolete in several respects. Therefore, it was felt timely to collect these advances in a book. The book contains a series of chapters discussing several rhodium systems arranged according to ligand type, including asymmetric ligands, a chapter on applications in organic chemistry, a chapter on modern processes and separations, and a chapter on catalyst preparation and laboratory techniques. This book concentrates on highlights, rather than a concise review mentioning all articles in just one line. The book aims at an audience of advanced students, experts in the field, and scientists from related fields. The didactic approach also makes it useful as a guide for an advanced course.

Homogeneous Hydrogenation
Homogeneous Hydrogenation

Author: P.A. Chaloner

Publisher: Springer Science & Business Media

Published: 2013-11-11

Total Pages: 293

ISBN-13: 9401717915

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Homogeneous hydrogenation is one of the most thoroughly studied fields of homogeneous catalysis. The results of these studies have proved to be most important for an understanding of the underlying principles of the activation of small molecules by transition metal complexes. During the past three decades homogeneous hydrogenation has found widespread application in organic chemistry, including the production of important pharmaceuticals, especially where a sophisticated degree of selectivity is required. This volume presents a general account of the main principles and applications of homogeneous hydrogenation by transition metal complexes. Special attention is devoted to the mechanisms by which these processes occur, and the role of the recently discovered complexes of molecular hydrogen is described. Sources of hydrogen, other than H2, are also considered (transfer hydrogenation). The latest achievements in highly stereoselective hydrogenations have made possible many new applications in organic synthesis. These applications are documented by giving details of the reduction of important unsaturated substrates (alkenes, alkynes, aldehydes and ketones, nitrocompounds, etc.). Hydrogenation in biphasic and phase transfer catalyzed systems is also described. Finally, a discussion of the biochemical routes of H2 activation highlights the similarities and differences in performing hydrogenation in both natural and synthetic systems. For researchers working in the fields of homogeneous catalysis, especially in areas such as pharmaceuticals, plastics and fine chemicals.

Purification of Laboratory Chemicals
Purification of Laboratory Chemicals

Author: W.L.F. Armarego

Publisher: Elsevier

Published: 2003-03-07

Total Pages: 627

ISBN-13: 0080515460

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Now in its fifth edition, the book has been updated to include more detailed descriptions of new or more commonly used techniques since the last edition as well as remove those that are no longer used, procedures which have been developed recently, ionization constants (pKa values) and also more detail about the trivial names of compounds.In addition to having two general chapters on purification procedures, this book provides details of the physical properties and purification procedures, taken from literature, of a very extensive number of organic, inorganic and biochemical compounds which are commercially available. This is the only complete source that covers the purification of laboratory chemicals that are commercially available in this manner and format.* Complete update of this valuable, well-known reference* Provides purification procedures of commercially available chemicals and biochemicals* Includes an extremely useful compilation of ionisation constants

Pincer Compounds
Pincer Compounds

Author: David Morales-Morales

Publisher: Elsevier

Published: 2018-04-11

Total Pages: 756

ISBN-13: 0128129328

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Pincer Compounds: Chemistry and Applications offers valuable state-of-the-art coverage highlighting highly active areas of research—from mechanistic work to synthesis and characterization. The book focuses on small molecule activation chemistry (particularly H2 and hydrogenation), earth abundant metals (such as Fe), actinides, carbene-pincers, chiral catalysis, and alternative solvent usage. The book covers the current state of the field, featuring chapters from renowned contributors, covering four continents and ranging from still-active pioneers to new names emerging as creative strong contributors to this fascinating and promising area. Over a decade since the publication of Morales-Morales and Jensen's The Chemistry of Pincer Compounds (Elsevier 2007), research in this unique area has flourished, finding a plethora of applications in almost every single branch of chemistry—from their traditional application as very robust and active catalysts all the way to potential biological and pharmaceutical applications. - Describes the chemistry and applications of this important class of organometallic and coordination compounds - Includes contributions from global leaders in the field, featuring pioneers in the area as well as emerging experts conducting exciting research on pincer complexes - Highlights areas of promising and active research, including small molecule activation, earth abundant metals, and actinide chemistry

NMR in Organometallic Chemistry
NMR in Organometallic Chemistry

Author: Paul S. Pregosin

Publisher: John Wiley & Sons

Published: 2013-07-26

Total Pages: 409

ISBN-13: 3527680292

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The first and ultimate guide for anyone working in transition organometallic chemistry and related fields, providing the background and practical guidance on how to efficiently work with routine research problems in NMR. The book adopts a problem-solving approach with many examples taken from recent literature to show readers how to interpret the data. Perfect for PhD students, postdocs and other newcomers in organometallic and inorganic chemistry, as well as for organic chemists involved in transition metal catalysis.

Molecularly Imprinted Catalysts
Molecularly Imprinted Catalysts

Author: Songjun Li

Publisher: Elsevier

Published: 2015-09-30

Total Pages: 312

ISBN-13: 012801444X

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Molecularly Imprinted Catalysts: Principle, Synthesis, and Applications is the first book of its kind to provide an in-depth overview of molecularly imprinted catalysts and selective catalysis, including technical details, principles of selective catalysis, preparation processes, the catalytically active polymers themselves, and important progress made in this field. It serves as an important reference for scientists, students, and researchers who are working in the areas of molecular imprinting, catalysis, molecular recognition, materials science, biotechnology, and nanotechnology.Comprising a diverse group of experts from prestigious universities and industries across the world, the contributors to this book provide access to the latest knowledge and eye-catching achievements in the field, and an understanding of what progress has been made and to what extent it is being advanced in industry. - The first book in the field on molecularly imprinted catalysts (MIPs) - Provides a systematic background to selective catalysis, especially the basic concepts and key principles of the different MIP-based catalysts - Features state-of-the art presentation of preparation methods and applications of MIPs - Written by scientists from prestigious universities and industries across the world, and edited by veteran researchers in molecular imprinting and selective catalysis