Yttrium Dialkyl Supported by a Silaamidinate Ligand: Synthesis, Structure and Catalysis on Cyclotrimerization of Isocyanates

A sterically demanding silaamidine (ArN=Si(L)NHAr) ligand was synthesized and employed for the prepration of a yttrium dialkyl complex, which catalytically enabled cyclotrimerization of isocyanate with high activity and excellent functional group tolerance.