Over the past few decades,radical reaction have attracted considerable interest in organic synthesis due to their diverse chemical reactivities and applications.Recently,our group focused on the reactions involving S3 ?? in situ generated from S2-mediated cyclization reactions with different radical acceptors for the synthesis of thiophene derivatives via C-S bond formations.1-2 We have also studied the reactions utilizing Se powder or seleniumsulfonates via C-Se bond formations.