摘要:
The reaction Of Ru(CO)ClH(PPh3)3 with 1-alkynes in 1,2-dichloroethane under reflux conditions provides the coordinatively unsaturated butenynyl complexes [Ru{C(C=CR)=CHR}(CO)Cl(PPh3)2] in good yield. These and related butenynyl complexes were also prepared by starting from the corresponding alkenyl- or alkynylruthenium complexes. Hydrogenolysis of [Ru{C(C=CPh)=CHPh}(CO)Cl(PPh3)2] in the presence of pyridine gave (Z)-1,4-diphenylbutenyne and Ru(CO)ClH(py)(PPh3)2.