Process to prepare a terminal aldehyde
US6018081A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 28, 1997 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Apr 28, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/827
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A hydroformylation process for preparating a terminal aldehyde involves reacting an ethylenically unsaturated organic compound with carbon monoxide and hydrogen in the presence of a catalyst system iridium or rhodium and a bidentate organic phosphite ligand wherein the two phosphorus atoms of the phopshite ligand are linked with a 2,2'-dihydroxyl-1,1'-binapthalene bridging group having the following structure (Q): ##STR1## in which R.sup.1 and R.sup.2 are substituents other than hydrogen and in which R.sup.3 and R.sup.4 are the same or different substituted monovalent aryl groups and/or any one of OR.sup.3 and OR.sup.4 connected to one phosphorus atom forms an --O--R.sup.5 --O-group, where R.sup.5 is a divalent organic group containing one or two aryl groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.