Preparing 1,3,5-triacetyl-2,4-dioxohexahydro-1,3,5-triazine, comprises separating insoluble component of 1,3,5-triacetyl-2,4-dioxohexahydro-1,3,5-triazine in polar solvent, concentrating and separating precipitate, and recrystallizing

摘要

Preparation of 1,3,5-triacetyl-2,4-dioxohexahydro-1,3,5-triazine (I), comprises: separating optionally insoluble portions of a solution containing (I) in a polar aprotic solvent; concentrating and separating the precipitate; and optionally recrystallizing the precipitate in a polar aprotic solvent.