A Novel Route to Fulvene Complexes of Titanium-Diastereoselective Complexation of Pentafulvenes to Cyclopentadienyltitanium Fragments.

An alternative to the known thermally induced syntheses of fulvene complexes of early transition metals is now provided by the direct reductive complexation of pentafulvenes to [CpTiCl] fragments. These generally highly diastereoselective reactions enable a broad variation of substitution patterns and establish an extensive subsequent chemistry.