Palladium-Catalyzed ortho-Acyloxylation of 2-Aryl-4H-pyrido[1,2-a]pyrimidin-4-ones: Entry to Benzo[b]furano-pyridopyrimidones

A chelation-assisted palladium-catalyzed ortho-acyloxylation of 2-aryl-4H-pyrido[1,2-a]pyrimidin-4-ones is reported for further elaboration. Carboxylic acid along with phenyl iodoacetate (PIDA) was used as the acyloxylation source in substrate directed C–H functionalization. The...