The salt-free nickel-catalysed alpha-allylation reaction of ketones with allyl alcohol and diallylether
Résumé
The nickel-catalysed α-allylation of ketones with allyl alcohol and diallylether has been performed under neutral conditions. As no base is involved, the products are synthesized without salts as side products. The dppf/Ni(cod)2 catalytic system in MeOH at 80 °C has been shown as the most effective reaction system to afford tetrasubstituted derivatives from various cyclic and acyclic ketones with one or two mobile protons. This process combined with a metathesis step yields spirocyclic compounds according to a salt free synthetic sequence.
Domaines
CatalyseOrigine | Fichiers produits par l'(les) auteur(s) |
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