Some neutral ruthenium vinylidene complexes and a novel 1,3-elimination reaction: Preparation of chiral ruthenium acetylides

Article abstract of DOI:10.1016/0022-328X(96)06200-6

Reactions of RuCl(PPh₃)₂Cp* with 1-alkynes in non-polar solvents afford the neutral vinylidene complexes RuCl(C=CHR)(PPh₃)Cp* [R = Ph (X-ray structure), Bu^t, SiMe₃, CO₂Me]; a novel 1,3 elimination of HCl induced by NaOMe in the presence of a variety of ligands gives the chiral-at-metal complexes Ru(C≡CR)(L)(PPh₃)Cp* [L = CO, C₂H₄ (X-ray structure), PR₃, P(OR)₃, O₂, S₂, CS₂ (for example)].