1,3-oxazinane-2,6-dione is primarily utilized in the field of organic synthesis, where it serves as a key intermediate for the production of various pharmaceuticals and bioactive compounds. Its structure is particularly valuable in the development of heterocyclic compounds, which are often incorporated into drugs targeting neurological disorders, infections, and other medical conditions. Additionally, it is employed in the synthesis of polymers and materials with specific properties, such as biodegradability or enhanced mechanical strength. In research, this compound is used to study reaction mechanisms and to develop novel chemical processes, contributing to advancements in medicinal chemistry and material science.