Imidazolium-tagged ferrocenyl diphosphanes are useful ligands in palladium-catalyzed allylic substitutions with heteroatom nucleophiles. Substitution with phthalimide proceeds with high enantioselectivity (up to 92% ee) in various ionic liquids. Reaction with p-cresol as nucleophile affords allylation product in up to 62% ee, while using tolylsulfinate as a nucleophile gives a product with very little or no enantioselectivity. Under these reaction ...
[Bower, Justin F.; Jumnah, Roshan; Williams, Andrew C.; Williams, Jonathan M. J. Journal of the Chemical Society - Perkin Transactions 1, 1997 , # 9 p. 1411 - 1420]