Polystyrene-Supported N-Heterocyclic Carbene-Silver Complexes as Robust and Efficient Catalysts for the Reaction of Carbon Dioxide and Propargylic Alcohols
supported catalysts was investigated for the reaction of propargylicalcohols and carbondioxide. PS‐NHC‐Cu(I) showed no catalytic activity to the reaction, while PS‐NHC‐Ag(I) showed a considerable high activity and selectivity for the reaction, yielding the corresponding α‐alkylidene cyclic carbonates in high to excellent yields under mild conditions. Most importantly, the supported catalysts could be
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