Reduction of titanocene dichloride with dysprosium: access to a stable titanocene(ii) equivalent for phosphite-free Takeda carbonyl olefination.
The reduction of titanocene dichloride with dysprosium yields a new titanocene(ii) equivalent without the need for further stabilising ligands. This reagent can be employed in combination with dithioacetals for the olefination of different carbonyl groups and allows for a simplified all-in-one procedure.
Institut de Chimie Moléculaire, CNRS (UMR 7312) and Université de Reims, 51687 Reims Cedex 2, France. florian.jaroschik@univ-reims.fr.
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Déchamps
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Jaroschik