As　an　attractive　C1　synthon,　carbon　dioxide　(CO2)　has　been　extensively　used　in　organic　synthesis　to　pro-duce　carboxylic　acids.　In　this　research,　stereoselective　electrochemical　carboxylation　of　alpha,,8-unsaturated　sulfones　has　been　developed　under　transition-metal-free　conditions.　All　the　cinnamic　acids　and　the　derivatives　are　obtained　selectively　in　the　E-configuration.　Besides,　arylpropiolates　also　can　be　produced　from　alkynyl　sulfones.(c)　2023　Published　by　Elsevier　B.V.　on　behalf　of　Chinese　Chemical　Society　and　Institute　of　Materia　Medica,　Chinese　Academy　of　Medical　Sciences.