Synthesis and reactivity of ruthenium hydride complexes containing chelating triphosphines. 4. Reactions of ruthenium hydride complexes containing triphosphines with olefins

Article abstract of DOI:10.1021/om00159a025

Methyl vinyl ketone reacts with RuH(BH₄)(triphos) (triphos = ttp, Cyttp) to give Ru(η⁴-CH₂= CHCOMe)(triphos). The compound Ru(η⁴-CH₂=CHCOMe)(Cyttp) is also formed from the reaction of RuH₄(Cyttp) with methyl vinyl ketone. RuH₄(Cyttp) reacts with 2-vinylpyridine to produce two isomers of RuH(CH=CHC₅H₄N)(Cyttp), with vinyl acetate to give RuH(O₂CMe)(Cyttp), and with methyl acrylate to yield RuH₂(CO)(Cyttp). The reaction products were characterized by multinuclear NMR and IR spectroscopy. The structure of Ru(η⁴-CH₂=CHCOMe)(ttp) has been confirmed by single-crystal X-ray diffraction. Ru(η⁴-CH₂=CHCOMe)(ttp) crystallizes in the space group P2₁/c with cell parameters a = 10.236 (1) A?, b = 20.845 (3) A?, c = 16.922 (2) A?, β = 106.58 (1)°, Z = 4, V = 3460 A?³, R = 0.031, and R_w = 0.038 for the 5829 intensities with F_o² > 3σ(F_o²) and the 418 variables.