PhIO-mediated Synthesis of Ketones from Alkynes and Alkenes

A facile and efficient method for the preparation of methyl ketones was developed in the reaction of alkynes and alkenes with PhIO-BF3∙Et2O. The reaction features mild conditions, short time and metal-free catalyst. The possible mechanism for the formation of methyl ketones was proposed. H2O functions as both a nucleophile and an oxygen source.