reaction of α-ketoacids with commercially available carbodiimides under mild conditions, and in the presence of visible light, induces the rearrangement of an O-acyl urea, and eventually leads to hydantoins in good yields. Because of economy of atoms, this tandem process can be considered as a green procedure.
据报道5-羟基乙内酰
脲衍
生物的有效进入。α-
酮酸与市售的碳二
亚胺在温和的条件下,在可见光的存在下反应,会引起O-酰基
脲的重排,最终导致乙内酰
脲的收率高。由于原子的经济性,该串联过程可以视为绿色过程。