Ceric(IV)-Mediated Reaction of Methylenecyclopropanes in Organic Synthesis: A Facile Access to Dihydrofurans and Cyclobutanones

Alkylidenecyclopropanes undergo CAN-mediated addition reactions with 1,3-dicarbonyl compounds or ring rearrangement reactions leading to dihydrofuran and cyclobutanone derivatives, respectively, in moderate yields.