Efficient synthesis of 3-selanyl- and 3-sulfanylindoles employing trichloroisocyanuric acid and dichalcogenides

3-Arylselanyl- and 3-arylsulfanylindoles were prepared in EtOAc, by the reaction of indole with the diaryl dichalcogenide-trichloroisocyanuric acid (TCCA) reagent system. The products were efficiently and conveniently obtained, at room temperature and in short reaction times.