Phosphorus compounds
US5508438A · kind A · utility
21Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1993 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Sep 24, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/655345
- 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, hydroxy or a protected hydroxy group, R.sup.1 and R.sup.2 are different from each other and represent lower alkyl, cycloalkyl, aryl, a five-membered heteroaromatic or a group of the formula ##STR2## are described. The compounds of formula I are useful in the form of complexes with a metal of Group VIII as catalysts for asymmetric hydrogenations and for enantioselective hydrogen displacements in prochiral allylic systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.