作者:Rosa Luisa Meza-León、Sylvain Bernès、Guadalupe Nallely Cortés-López、Virginia M. Mastranzo、Martha Sosa-Rivadeneyra、Fernando Sartillo-Piscil
DOI:10.1016/j.tetlet.2016.08.022
日期:2016.9
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。