New Functionalized Vinyl Monomers by Ethylene-(Functionalized)-Norbornene Hetero-Trimerization Catalyzed by Cobalt(II)-(Imino)pyridine Complexes

On activation by MAO thepyridine cobalt(II) complex CoCl2N2Ph/i-Pr2 catalyzes the enchainment of one norbornene molecule with two ethylene molecules to give exo-2,exo-3-ethylvinylnorbornane with high activity and complete diastereoselectivity

Alessandro Toti; Giuliano Giambastiani; Claudio Bianchini; Andrea Meli; Lapo Luconi

2008

Key concepts

Scholarcy highlights

  • On activation by MAO thepyridine cobalt(II) complex CoCl2N2Ph/i-Pr2 catalyzes the enchainment of one norbornene molecule with two ethylene molecules to give exo-2,exo-3-ethylvinylnorbornane with high activity and complete diastereoselectivity
  • The 2E-1NB hetero-trimerization reaction has been accomplished with NBs bearing polar substituents such as norbornenemethanol and norbornenecarboxylic acid provided that the substrate is protected with triisobutylaluminum and the less sterically demanding complex CoCl2N2Ph/Me2 is used as catalyst precursor
  • A mechanism for the hetero-trimerization reactions is proposed on the basis of experimental evidence
  • Any queries should be directed to the corresponding author for the article

Need more features? Save interactive summary cards to your Scholarcy Library.