Highly Efficient Access to Iminoisocoumarins and α-Iminopyrones via AgOTf-Catalyzed Intramolecular Enyne−Amide Cyclization
摘要:
Iminoisocoumarins and alpha-iminopyrones are prepared via Sonogashira coupling and AgOTf-catalyzed 6-endo-dig O-cyclization of the enyne-amide system in dichloroethane, in one pot or stepwise, respectively.