Synthesis of and hydroformylation with fluoro-substituted bidentate phosphine ligands
US5616785A · kind A · utility
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Key dates
| Filing date | Apr 10, 1996 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Apr 10, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2540/225
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Hydroformylation of alkenes to aldehydes in the presence of a rhodium complex catalyst is improved by the addition of a novel bidentate ligand of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.1.sup.' are organic radicals selected from alicyclic, aliphatic and aromatic groups of which at least one is preferably substituted with at least one electronegative moiety and the methylene groups are present at the trans-2,3 positions on the norbornane moiety. The invention also provides a novel method for producing the bidentate ligand and novel intermediate phosphine oxide and phosphinous acid compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.