α,β-Unsaturated Carboxylic Acid Derivatives. XXI. A Novel Synthesis of α-Dehydroamino Acid Derivatives by the Arbusov Reaction of α-Phosphoranylideneamino-2-alkenoates

Article abstract of DOI:10.1246/bcsj.54.3811

The reaction of ethyl 2-azido-2-alkenoate with organic tervalent phosphorus reagent gave the corresponding 2-phosphoranylideneamino derivative as an stable intermediate.This transformed gradually at room temperature, or immediately on a silica-gel column