Chiral phosphines
US5302738A · kind A · utility
11Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Nov 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/42
- 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 protected hydroxy, R.sup.1 signifies lower alkoxy, phenoxy, benzyloxy, chlorine or bromine, R.sup.2 stands for lower alkyl or lower alkoxy and n represents the number 0, 1 or 2, are described. These compounds are valuable intermediates in the manufacture of not only known, but also novel diphosphine ligands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.