Reactivity of seven-membered azazirconacycloallenes and four-membered zirconacycles toward diphenylacetonitrile

Article abstract of DOI:10.1021/om300949a

The reaction of the seven-membered azazirconacycloallene 2 with Ph ₂CHCN was carried out to yield a zirconocene complex with three fused rings and a keteniminate ligand. Further reactivity toward propargyl bromide or propionyl chloride shows that the keteniminate ligand can be replaced by halogen atoms (Br or Cl). In addition, the reaction of the strained four-membered zirconacycle 1 with Ph₂CHCN gives zirconocenes possessing vinyl-imine and keteniminate species.