A series of CO2-protected pyrimidin-2-ylidenes as well as 1,3-dimesitylimidazol-
2-ylidene and dimesitylimidazolin-2-ylidene complexes of SnII have been prepared. Selected
single-crystal X-ray structures are reported.
The new compounds were investigated for their catalytic behavior in polyurethane (PUR) synthesis. All compounds investigated showed excellent catalytic activity, rivaling the industrially most relevant catalyst di-ACHTUNGTRENUNGbutyltin dilaurate. Even more important,
all compounds displayed pronounced