Chemoenzymatic Synthesis of Rivastigmine via Dynamic Kinetic Resolution as a Key Step

Abstract
A practical and efficient procedure for the synthesis of rivastigmine was developed. This procedure includes dynamic kinetic resolution using a polymer-bound ruthenium complex and a lipase in combination as a key step. Enantiopure (−)-rivastigmine was obtained from commercially available 3′-hydroxyacetophenone via five steps in overall 57% yield.