Preparation of metallocenes carrying a cyclopentadiene comprising a basic donor group
US6806377B1 · kind B1 · utility
0Cited by
5References
37Claims
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Inventors
Key dates
| Filing date | Oct 16, 2002 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Apr 18, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides a method for the preparation of a metallocene halide salt having at least one cyclopentadiene group substituted by a basic group, the method comprising reacting together a metal halide with a cyclopentadiene substituted by a basic group. In a preferred embodiment, the substituted cyclopentadiene is substituted with an amino group and the metal halide titanium tetrachloride. The invention provides a single step process for the preparation of metallocene derivatives which are useful in the formulation of medicaments and as polymerisation catalyst precursors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.