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Download Metal-catalized cross-coupling reactions by François Diederich, Peter Stang PDF

By François Diederich, Peter Stang

Carbon-carbon bond forming reactions are arguably an important approaches in chemistry, as they symbolize key steps within the development of advanced molecules from basic precursors. between those reactions, metal-catalyzed cross-coupling reactions are broadly hired in quite a lot of components of preparative natural chemistry, starting from the synthesis of complicated usual items, to supramolecular chemistry, and fabrics science.
In this paintings, a dozen across the world popular specialists and leaders within the box convey the reader brand new by way of documenting and significantly interpreting present advancements and makes use of of metal-catalyzed cross-coupling reactions. a very beautiful and precious characteristic, that reinforces the sensible worth of this monograph, is the inclusion of key artificial protocols, in experimental layout, selected for wide software and application.
This practice-oriented e-book can supply the practitioner brief cuts to make sure they continue to be updated with the most recent advancements.

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1 Katalytische Hydrierung der Alkene Alkene addieren in Gegenwart von Metallkatalysatoren (Ni, Pd, Pt) quantitativ Wasserstoff an ihre CC-Doppelbindung. Dabei addiert das H2-Molekül an eine Seite der CC-Doppelbindung. R Alken R katalytische Hydrierung R R H H R R C C R H H C C R Alkan Katalysator-Oberfläche (Katalysator = Ni , Pd oder Pt) Beispiel: H 3C CH 3 H 3C CH3 Ni, Pd oder Pt + H2 C C H 3C CH CH CH 2 CH2 CH2 CH 2 CH 3 CH 2 CH2 CH2 CH 2 CH 3 CH 3 2,3-Dimethyl-2-octen 2,3-Dimethyloctan Da es viele Verfahren zur Synthese von Alkenen gibt (Abschn.

Stab-, Kugel-Stab- und Kalotten-Modell des Ethins Die lineare Molekülgeometrie wird erklärt, indem die bindenden C-Atome sp-Hybridorbitale bereitstellen, deren Endüberlappung zu einem u-Molekülorbital (sp-sp-u-MO) und damit zur CC-sBindung des Ethins führt. An jedem C-Atom bleibt dann noch ein sp-Orbital, welches mit dem Wasserstoff-1s-Orbital zum CH-u-Orbital (sp-sp-u-MO) überlappt. Die seitliche Überlappung der beiden an jedem C-Atom noch verfügbaren 2p-Orbitale (Abb. 19) erzeugt zwei r-Molekülorbitale (p-p-r-MO), deren r-Elektronenwolken die CC-u-Bindung oben und unten sowie vorn und hinten umschließen (Abb.

Ethin-Molekül, (a) lineare Geometrie und Atomabstände, (b) Überlappung der p-Orbitale zu zwei rMolekülorbitalen Aus E. Breitmaier, G. Jung: Organische Chemie (ISBN 3-13-541505-8) © Georg Thieme Verlag Stuttgart 2005 Dieses Dokument ist nur für den persönlichen Gebrauch bestimmt und darf in keiner Form an Dritte weitergegeben werden! 8 Reaktive Zwischenstufen 15 Eine CC-Dreifachbindung besteht also aus einer CC-u-Bindung und zwei CC-r-Bindungen, welche aus der Überlappung von zwei Paaren senkrecht aufeinander stehender 2p-Orbitale resultieren.

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