Chelate ligands for low pressure hydroformylation catalyst and process employing same
US4694109A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Jun 13, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F15/008
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel ligand for use in hydroformylation reactions wherein at least one olefin having from 2 to 20 carbon atoms is contacted in a reaction zone at a temperature of from about 20.degree. C. to about 250.degree. C. and a pressure of from about 50 psig to about 800 psig with hydrogen, carbon monoxide, and a catalyst containing rhodium, the ligand having the formula ##STR1## wherein: n is 1-4; PA1 each R is independently selected from hydrogen, alkyl, alkoxy, aryloxy, aryl, aralkyl, alkaryl, alkoxyalkyl, cycloaliphatic, halogen, alkanoyl, alkanoyloxy, alkoxycarbonyl, carboxyl or cyano; PA1 each R.sub.1 and R.sub.2 is independently selected from alkyl, aryl, aralkyl, alkaryl or cycloaliphatic; PA1 each R.sub.3 and R.sub.4 is independently selected from hydrogen and the R.sub.1 substituents; and PA1 each Y is independently selected from the elements N, P, As, Sb and Bi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.