[1-(2-Pyridyl)alkoxo-N,O]ruthenium(II) complexes derived from a carbonylchlorohydridoruthenium(II) complex and 2-acylpyridines

Article abstract of DOI:10.1016/S0020-1693(00)87300-4

2-Formylpyridine was inserted into the hydridoruthenium bond in [RuClH(CO)(PPh₃)₃] at room temperature to give cis-[RuCl(OCH₂-C₅H₄N-N,O)(CO)(PPh₃)₂] (II). Complex II isomerized in refluxing benzene to a thermodynamically-stable trans form. 2-Acetyl- and 2-benzoylpyridines also reacted with [RuClH(CO)(PPh₃)₃] in refluxing THF to afford insertion products, [RuCl(OCHR-C₅H₄N-N,O](CO)(PPh₃)₂] (R = Me and Ph, respectively). These complexes were characterized by means of elemental analysis, molecular weights, and IR and NMR spectroscopy.