Process for producing 1-substituted-hydantoins

摘要

The subject is to provides a process for producing 1-substituted-hydantoins of Formula I: <CHEM> wherein R1 represents a hydrocarbon group which may be substituted and others, characterized by reacting N-substituted-N-alkoxycarbonylamino-acetonitrile of Formula @ : <CHEM> wherein R2 represents an alkyl group and others, with an alkali metal hydroxides or the like and then treating with an acid.