An　electrochemical　methodology　for　the　Minisci-type　trifluoromethylation　of　electron-deficient　heterocycles　mediated　by　cheap　and　easily　available　bromide　ions　has　been　developed.　By　virtue　of　the　in　situ　generated　sulfonyl　hypobromite　intermediate,　the　CF3　radical　can　be　regulated　and　controlled　at　a　low　concentration,　thereby　improving　the　reaction　efficiency　over　direct　electrolysis.　Also,　this　indirect　electrochemical　process　is　performed　in　a　beaker-type　undivided　cell　under　galvanostatic　conditions,　without　using　external　expensive　supporting　electrolytes.　This　protocol　provides　an　alternative　electrochemical　trifluoromethylation　methodology　for　the　late-stage　functionalization　of　biologically　important　molecules.