Réactions des arylzinciques avec les dérivés d'alcynes catalysées par le cobalt

Abstract : After a general introduction on cobalt catalysis and organozinc compounds, a short first chapter describes the preparation of cobalt-containing arylzinc bromide solutions in acetonitriles, prepared using cobalt-bipyridine and cobalt-phenanthroline complexes, that were used in this work. Two different reactions using these solutions are then presented: first, the cross-coupling with bromoalkynes, which allows the preparation of functionalized arylalkynes. Then, the arylzincation of internal alkynes is described, dialkyl alkynes and phenylacetylene derivatives, which allows formation of trisubstituted vinylzinc species that can be transformed into tri- and tetrasubstituted alkenes.
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Martin Corpet. Réactions des arylzinciques avec les dérivés d'alcynes catalysées par le cobalt. Chimie organique. Ecole Polytechnique X, 2013. Français. ⟨pastel-00961703⟩

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