Used as a chiral auxiliary in asymmetric synthesis, enabling the selective formation of stereocenters in complex organic molecules. Its rigid oxazolidinone ring helps control the approach of reagents during enolate reactions, particularly in aldol and alkylation reactions. The cinnamoyl group enhances reactivity and can be modified or removed after stereocontrol is achieved. Commonly applied in pharmaceutical synthesis where precise stereochemistry is critical. Also employed in the development of bioactive compounds and natural product synthesis due to its ability to direct high enantioselectivity.