Application
The Berkessel ligand, developed by Albrecht Berkessel's lab, serves as an innovative catalyst system designed for the enantioselective epoxidation of non-conjugated terminal double bonds using hydrogen peroxide as the oxidant. It streamlines the production of enantiopure epoxides, crucial intermediates in the synthesis of bioactive compounds, by enabling a one-step process with Ti(OiPr)4, effectively removing the need for multiple reaction steps and kinetic resolution. Additionally, this chiral ligand is recyclable under certain conditions, enhancing its practicality and efficiency. For optimal performance, the use of pentafluorobenzoic acid (P5360) or tetra-n-butylammonium hydrogensulfate (155837) as co-catalysts is advised.