One‐step synthesis of 3‐amino‐2,4‐imidazolinediones (3‐aminohydantoins) from α‐amino acids

Abstract

Abstract α‐Amino acids melted with ethyl or t ‐butyl carbazate or, preferably, refluxed with t ‐butyl carbazate in quinoline gave high yields of 3‐amino‐2,4‐imidazolidinediones (3‐aminohydantoins).