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mcmurry organic chemistry

Paperback. Print on request Neuware - Homogeneous catalysis plays an important role both in the laboratory and in the industry. Successful applications in industry involve new polymerization processes with complexes of zirconium and related metals, new carbonylation processes employing palladium and rhodium, ring opening polymerizations, and new enantioselective isomerization 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 catalyzed 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 of ligands, 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. 228 pp. English. New. Order number: 9789401042123.

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