Nucleophilic Functionalization of Thianthrenium Salts under Base Conditions

In recent years, S-(alkyl) thianthrenium salts have become an important means of functionalizing alcohol compounds. However, additional transition-metal catalysts and/or visible light are required. Herein, a direct thioetherification/amination reaction of thianthrenium salts is realized under metal-free conditions. This strategy exhibits good functional-group tolerance, operational simplicity, and an extensive range of compatible substrates.