Scalable and Room-Temperature Ring-Opening Polymerization of ε-Caprolactone Catalyzed by Active Lithium Tetramethylene-Tethered butylimidazol-2-ylidene Heterocyclic Carbene as a Lewis Acid Organocatalyst

Abstract The Lewis acid organocatalytic system of lithium tetramethylene-tethered bis[N-(N′-butylimidazol-2-ylidene)] N-heterocyclic carbene (1,4-bisNHC) including lithium benzyloxide and benzyl alcohol has been successfully utilized in the ring-opening polymerization...