Visible-Light-Induced Upcycling of Perchloroethylene into Trichloroacetamides Using Chlorine Dioxide

Herein, we report the visible-light-induced upcycling of environmentally problematic perchloroethylene into valuable trichloroacetamides using chlorine dioxide (ClO2•). The reaction proceeds with stoichiometric amounts of reagents; under mild conditions, this enables broad applicability to the synthesis of aromatic trichloroacetamides, carbamates, urea, and heterocycles, offering a sustainable strategy for transforming an environmental pollutant into useful building blocks.