2,2-Di-n-butyl-1,3,2-dioxastannolane/di-n-butyltin dichloride: an excellent catalytic system for cyclo-oligomerization of lactones
Abstract
The catalytic system 2,2-di-n-butyl-1,3,2-dioxastannolane/di-n-butyltin dichloride (DOS/DTC) induces clean cyclo-oligomerization of β-propiolactone and ε-caprolactone to an equilibrium distribution of oligolactones in dilute solution under unusually mild conditions.