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Étude théorique et expérimentale de la formation de quelques liaisons carbone-carbone par catalyse au cobalt à partir d'halogénures aromatiques

Abstract : Efficient methods for the dimerization of subtituted aromatic halides (both with electron-withdrawing and electron-donating groups) were developped in reductive or oxidative conditions under cobalt catalysis. The cobalt-catalysed vinylation of aromatic bromides by β-bromostyrene was also achieved in reductive conditions and allows a good control of the double-bond stereochemistry. These three reactions exemplified the versatility of cobalt salts in the formation of carbon-carbon bonds in simple, economical and ecological ways. Mechanisms were proposed concerning two of the reactions and were investigated using DFT-based methods. They have been shown to be compatible with experimental datas. These studies have given important elements toward a correct modelisation of catalytic species, underlining the problems due to the intervention of several spin states in the mechanisms.
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https://pastel.archives-ouvertes.fr/pastel-00569164
Contributor : Aurélien Moncomble <>
Submitted on : Thursday, February 24, 2011 - 2:21:50 PM
Last modification on : Wednesday, March 20, 2019 - 12:12:31 PM
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Aurélien Moncomble, Corinne Gosmini. Étude théorique et expérimentale de la formation de quelques liaisons carbone-carbone par catalyse au cobalt à partir d'halogénures aromatiques. Catalyse. Ecole Polytechnique X, 2010. Français. ⟨pastel-00569164⟩

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