Process for preparing metallocene complexes
US4868288A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/029
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of compounds of formula Ia EQU [R.sup.1 FeR.sup.2' ].sup..sym..sub.q [LQ.sub.m ].sup.q.crclbar.(Ia), wherein R.sup.1 is a .pi.-arene, R.sup.2' is an anion of a .pi.-arene, L is a divalent to heptavalent metal or non-metal, Q is a halogen atom, q is an integer from 1 to 3 and m is an integer corresponding to the valency of L+q, said process comprises reacting an uncharged .pi.-complex of the formula IIIa EQU [(R.sup.2').sub.2 Fe] (IIIa) with a .pi.arene R.sup.1 is in the presence of Al and a Lewis-acid followed by treatment with an acid or a salt of an acid of the anion [LQ.sub.m ].sup.q-, the improvement consisting essentially of using TiCl.sub.4 as a Lewis-acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.