ne, copper iodide could efficiently catalyze the coupling of internal propargylicalcohols with carbondioxide to afford the corresponding α‐alkylidene cyclic carbonates in moderate to excellent yields. Moreover, we have developed a new and versatile protocol for the chemo‐ and stereoselective synthesis of a wide range of (E)‐α‐iodoalkylidene cyclic carbonates from carbondioxide, propargylic alcohols