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Abstract
The 16-electron complex RuHCl(CO)(PiPr3)2 (1) reacts with propargyl amines H‒C≡C(CH2) n Y (2–5) (n=1,2; Y = NMe2, N(Me)CH2Ph, or Py) by insertion to afford the five-coordinate vinyl-complexes RuCl{(E)‒CH˭CH(CH2) n Y}(CO)(PiPr3)2 (6, Y = NMe2, n = 1; 7, Y = N(Me)CH2Ph, n = 1; 8, Y = Py, n = 2; 9, Y = NMe2, n = 2) in good yield. Addition of CO to 7 produces the six-coordinate vinyl-complex RuCl{(E)‒CH˭CH(CH2) n Y}(CO)2(PiPr3)2 (10). The trans stereochemistry at the C˭C bond is observed in all compounds. All compounds were characterized by IR, 1H, 13C and 31P NMR spectroscopy.