Visible-Light-Induced Metal-Free Trifluoromethylselenolation of Electron-Rich Heteroarenes Using the Nucleophilic [Me4N][SeCF3] Reagent
Sequential Regioselective Diorganochalcogenations of Imidazo[1,2-a]pyrimidines Using I2/H3PO4 in Dimethylsulfoxide.