Ferrocenyl-1,2-diphosphines, the production thereof and their use
US7375241B2 · kind B2 · utility
0Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2004 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Dec 10, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to compounds of formula (I) provided in the form of racemic compounds, mixtures of diastereomers or essentially pure diastereomers, wherein R1 represents a hydrogen atom or C1-C4-alkyl, and at least one secondary phosphine depicts an unsubstituted or substituted cyclic phosphine group, or phosphonium salts thereof having one or two monovalent anions or a divalent anion. The compounds of formula (I) can be obtained by means of a novel method and are valuable ligands for catalytically active metal complexes in asymmetrical synthesis
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.