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