Hydroformylation process employing rhodium-based catalysts comprising ligands having electronegative substituents
US4221744A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Dec 1, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2540/225
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved process for hydroformylating an ethylenically-unsaturated compound to form an aldehyde derivative thereof in the presence of rhodium hydridocarbonyl in complex combination with an organic ligand, characterized by employing as said organic ligand a compound having two phosphino moieties, one being of the formula: ##STR1## and the other being of the formula: ##STR2## wherein R.sub.1, R.sub.2, R.sub.1 ', and R.sub.2 ' are organic radicals at least one of which contains an electronegative substituent moiety. The presence of the electronegative substituent in the ligand leads to an increased ratio of linear aldehyde to branched-chain aldehyde in the hydroformylation reaction product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.