SYNTHESIS OF (ETA-5-CYCLOPENTADIENYL)DICHLORO-SEC-ALKOXYTITANIUM(IV) COMPLEXES - CURRENT RESEARCH ON TITANOCENE DICHLORIDE WITH ALCOHOL REACTIONS

The synthesis of (eta-5-cyclopentadienyl)dichloro-s-alkoxititan(IV) from the corresponding alcohols and titanocene dichloride proceeds under mild conditions by substitution of one Cp ligand in the presence of triethylamine. This procedure is also applicable to chiral 1,4-t,t-diols, thus avoiding the use of the rather expensive eta-5-cyclopentadienyltrichlorotitan(IV) as a starting material. The title compounds furnish the corresponding olefins by elimination of hydrogen chloride under mild conditions. The reactions of other classes of alcohols and phenols with titanocene dichloride are also investigated.