Chirale phosphines
US5274125A · kind A · utility
9Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Nov 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/07
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel, racemic and optically active phosphorus compounds of the formula ##STR1## wherein R signifies lower alkyl, lower alkoxy or a protected hydroxy group, R.sup.1 signifies a five membered heteroaromatic ring, R.sup.2 stands for lower alkyl or lower alkoxy and n represents the number 0, 1 or 2, are described. The compounds of formula I serve in the form of complexes with a metal of Group VIII as catalyst for asymmetric hydrogenations and for enantioselective hydrogen displacements in prochiral allylic systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.