Abstract
Diamidophosphite P ∗-monodentate, ligands based on terpene alcohols and ( S)- or ( R)-(2-anilinomethyl)pyrrolidine, induce high enantioselectivities (ee’s up to 99%) in Pd-catalyzed allylic substitution reactions. In the Pd-catalyzed deracemization of ethyl ( E)-1,3-diphenylallyl carbonate up to 92% enantioselectivity has been achieved. The Rh-catalyzed asymmetric hydrogenation of α-dehydrocarboxylic acid esters leads to a maximum of 56% ee with quantitative conversion. Diastereomeric diamidophosphites prepared from [(1 S)- endo]-(−)-borneol were found to be the most efficient stereoselectors.
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