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A new type of ferrocenyl diphosphine–imine ligands that contains an ionic salt group has been prepared, and successfully applied to asymmetric C ∗ –O bond formation. In the Pd-catalyzed asymmetric allylic etherification of 1,3-diphenyl-2-propenyl acetate, high enantioselectivity was obtained (up to 91.0% ee). The potential of the catalysts to be recycled and reused has also been demonstrated.
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