Phrase oxazolidin

Phrases

1. The 5-imino-oxazolidin-2-one rearranges to form the hydantoin product via an isocyanate intermediate.
2. Nucleophilic addition of aminonitrile to CO 2 leads to cyano-carbamic acid, which undergoes an intramolecular ring closing to 5-imino-oxazolidin-2-one.