Reactions of alkenylruthenium(II) complexes with hydrosilane: C-Si vs C-H bond formation

Article abstract of DOI:10.1246/cl.1998.905

Alkenylruthenium complexes, Ru{C(R¹)=CH(R²)}Cl(CO)-(PPh₃)₂ (R¹ = H, R² = Ph; R¹ = H, R² = t-Bu; R¹ = Ph, R² = Ph; R¹ = CH=CH(SiMe₃), R² = SiMe₂Ph), react with HSiMe₂Ph via two reaction courses (path A and path B), leading to C-Si and C-H bond formation, respectively. Relative ratio of the two courses is strongly dependent upon steric bulkiness of substituent(s) on the alkenyl ligands.