Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Chemistry of Ruthenium Hydridonitrosyl Complexes Containing Chelating Triphosphines IV-Reactions between RuH(NO)(Cyttp) and Alkynes (Cyttp: Bis(dicyclohexylphosphino-propyl)phenylphosphine)

  • Ik-Mo Lee (Department of Chemistry, Inha University) ;
  • Ook-Jae Cho (Department of Chemistry, Inha University) ;
  • Devon W. Meek (Depratment of Chemistry, The Ohio State University) ;
  • Chan-Yong Kim (Department of Chemistry, Inha University)
  • Published : 1993.10.20
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Abstract

The types of the products of the reactions between RuH(NO)(Cyttp) and alkynes are sensitive to the nature of alkynes. Terminal, nonactivated alkynes (HC${\equiv}$CR, R=Ph, hexyl and $CH_2OH)$ produce acetylide complexes and terminal (HC${\equiv}$CR, R=C(O)Me, COOEt) or internal activated ones (RC${\equiv}$ CR, R=COOMe) lead to form alkenyl complexes. On the other hand, internal nonactivated alkynes (RC${\equiv}$CR, R=Ph) do not show reactivity toward RuH(NO)(Cyttp). These products can be rationalized by the cis-concerted mechanism but the radical pathway appears to work in the reaction of propargyl chloride. From the spectroscopic data, the trigonal bipyramidal structure with a linear NO group is proposed for these products.

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