α,β-Unsaturated Carboxylic Acid Derivatives. XIX. The Convenient Synthesis of α-Alkoxy-, α-Hydroxy-α-amino Acid, and Its Cyclic Dipeptide from α-Dehydroamino Acid

Article abstract of DOI:10.1246/bcsj.54.1137

The facile conversion of α-dehydroamino acid into α-alkoxy-α-amino acid and its cyclic dipeptide is described.The reaction of t-butyl 2-acetylamino-2-alkenoate or 1-benzyl-3-ethylidene-2,5-piperazinedione with alcohol, water, or acetic acid in presence of