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Theoretical Aspects of Homogeneous Catalysis

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  • 230 Seiten
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Homogeneous catalysis plays an important role both in the laboratory and in the industry. Successful applications in industry invo... Weiterlesen
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Homogeneous catalysis plays an important role both in the laboratory and in the industry. Successful applications in industry involve new polymerisation processes with complexes of zirconium and related metals, new carbonylation processes employing palladium and rhodium, ring opening polymerisations, and new enantioselective isomerisation catalysts as in the preparation of menthol. Also in the synthesis of organic compounds in the laboratory highly selective homogeneous catalysts represent an irreplaceable part of the toolbox of the synthetic chemist. Examples of such reactions are cross-coupling (Ni, Pd), nucleophilic substitution of allylpalladium complexes, Heck reactions (Pd), asymmetric epoxidation, Wacker type reactions (Pd), asymmetric hydrogenations (Rh, Ru), reactions of chromium complexes, enantioselective reactions with Lewis acids, reactions with the McMurry reagent, etc. There is hardly any multistep organic synthesis that does not involve one of these metal catalysed reactions. Most of these catalysts have been developed by empiricism. The metal catalysed processes consist of a series of elementary steps which often have been studied in isolation in organometallic chemistry. The knowl edge of such elementary steps - effect ofligands, anions, coordination number, valence states - has greatly contributed to the development of improved cata lysts for the reactions mentioned above. In addition to the empirical approach theoretical methods have given support and guidance to the development of improved processes. Often the key steps of a cycle escape from a direct ob servation and then theoretical contributions are even more wanted.

Presents the quantitative application of quantum chemistry to organometallic reactions. This title deals with key reactions of homogeneous catalysis including oxidative addition, migratory insertions, 2+2 additions, the Wacker reaction, and epoxidation. It provides experimental chemists with an overview of the state of the art in this field.

Preface; P.W.N.M. van Leeuwen. 1. An Introduction to Quantum Chemical Organometallic Chemistry; P.H.M. Budzelaar, J.H. van Lenthe. 2. Oxidative Addition Reactions; M.R.A. Blomberg, P.E.M. Siegbahn. 3. Alkene Migratory Insertions and C-C Bond Formations; N. Koga, K. Morokuma. 4. Carbonyl Migratory Insertions; N. Koga, K. Morokuma. 5. A Density Functional Study on the [2s+2s] Reactions in Organometallic Chemistry; E. Folga, T. Woo, T. Ziegler. 6. Wacker Reactions; A. Dedieu. 7. Epoxidation of Ethene Catalysed by Manganese(III)-chloro-porphyrin; R. Zwaans, J.H. van Lenthe, D.H.W. den Boer.


Titel: Theoretical Aspects of Homogeneous Catalysis
Untertitel: Applications of Ab Initio Molecular Orbital Theory
EAN: 9780792331070
ISBN: 0792331079
Format: Fester Einband
Herausgeber: Springer Netherlands
Anzahl Seiten: 230
Gewicht: 515g
Größe: H241mm x B160mm x T17mm
Jahr: 1995
Untertitel: Englisch
Auflage: 1995

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