REACTION OF ZIRCONOCENE DICHLORIDE WITH ALKYLLITHIUMS OR ALKYL GRIGNARD REAGENTS AS A CONVENIENT METHOD FOR GENERATING A "ZIRCONOCENE" EQUIVALANT AND ITS USE IN ZIRCONIUM-PROMOTED CYCLIZATION OF ALKENES, ALKYNES, DIENES, ENYNES, AND DIYNES

Article abstract of DOI:10.1016/S0040-4039(00)84653-5

Treatment of Cl2ZrCp2 with 2 equiv of alkylmetals (RM) containing Li or Mg, e.g., n-BuLi, in THF produces organozirconium species that act as sources of "ZrCp2," the latter product being a convenient reagent for preparing zirconacycles.