27770-23-6Relevant articles and documents
Process for producing 2,4-oxazolidinedione
-
, (2008/06/13)
Provided is a process which comprises reacting a 2-hydroxycarboxylic acid ester with urea to form a 2,4-oxazolidinedione , separating an unreacted 2-hydroxycarboxylic acid ester and a catalyst from the resulting reaction solution through distillation, and purifying the fraction composed mainly of the 2,4-oxazolidinedione through crystallization and/or extraction. In accordance with the present invention, the purified 2,4-oxazolidinedione is easily produced in a high yield by a simple purification method without using a costly alkali metal compound.