Visible-Light Induced Trifluoromethylation of N-Arylcinnamamides for the Synthesis of CF3-Containing 3,4-Disubstituted Dihydroquinolinones and 1-Azaspiro[4.5]decanes

The visible-light induced trifluoromethylation of N-arylcinnamamides with Togni's reagent has been explored. This method allows for an efficient and practical synthesis of a variety of CF3-containing dihydroquinolin-2(1H)-ones and 1-azasporo[4.5]decanes bearing various functional groups under mild conditions.