Electrochemical Difunctionalization of Olefines: Access to Selenomethyl‐Substituted Cyclic Ethers or Lactones

A metal‐ and oxidant‐free electrochemical method for preparing selenomethyl‐substituted cyclic ethers or lactones via difunctionalization of olefines is presented. A series of selenomethyl‐substituted cyclic ethers, particularly 9‐ and 11‐ membered, selenomethyl‐substituted lactones (4‐6 membered), and selenomethyl‐substituted phthalides can be obtained via this reaction. This method features convenient operation, an electron as oxidant, and ammonium iodide as electrolyte, thereby making it a green synthesis method.