Novel reactions of low valent titanium and zirconium reagents generated by reduction of Cp2TiCl2 and Cp2ZrCl2 with magnesium and 1,2-dibromoethane

Article abstract of DOI:10.1016/0022-328X(88)83026-2

The reduction of Cp2MCl2 (M=Ti or Zr) with Grignard grade magnesium and 1,2-dibromoethane in THF at 0 deg C gives the corresponding metallocene-ethylene complexes along with hydride species, as indicated by the reaction with diphenylacetylene to give 1,2-diphenyl-(E)-l-butene.The reactions of the Cp2ZrCl2/1,2-dibromobenzene/Mg system in THF with diphenylacetylene and norbornene are also described.