CAN-Mediated Highly Regio- and Stereoselective Oxidation of Vinylidenecyclopropanes: A Novel Method for the Synthesis of Unsymmetrical Divinyl Ketone and Functional Enone Derivatives

CAN-mediated oxidative rearrangement of various vinylidenecyclopropanes under mild conditions generates unsymmetrical divinyl ketone and functional enone derivatives in moderate to good yields with excellent regio- and stereoselectivities. The reaction mechanism was investigated on the basis of an oxygen-18 tracer experiment.