Process for the preparation of cyclopentadienyl compounds and co

Details Process for the preparation of cyclopentadienyl compounds and co Process for the preparation of cyclopentadienyl compounds and co

1996-01-23

2000-03-28

Bell, Mark L.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

585 23, 585502, 585507, 585530, 585638, C07C 202, C07C 100, C07C 1300

Patent

active

060434031

ABSTRACT:
A process is disclosed for preparing bis-cyclopentadienyl compounds bridged by a single carbon atom by reacting a carbonyl compound with a cyclopentadienyl compound in the presence of a base and of an oxygen-containing solvent having an atomic ratio carbon/oxygen not higher than 3. The compounds obtainable in high yields with this simple single-step process can be used to prepare ansa-metallocenes which are active as catalyst components in the polymerization of olefins.

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I.F. Urazowski et al., Xth Fechem Conference on Organometallic Chemistry, Sep. 5-10, 1993 in Agia Pelagia, Crete--Greece, abstract p.11.

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