Low pressure hydroformylation catalyst employing unique ligands and process using same
US4760194A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1987 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Feb 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/49
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A hydroformylation process including contacting hydroformylation stock in a reaction zone at a temperature of from about 20.degree. C. to about 250.degree. C. and a pressure of from about 15 psig to about 800 psig with hydrogen, carbon monoxide, wherein the catalyst comprises rhodium in chemical complex with one or more ligands of the formulae ##STR1## wherein: the x and y bonds are adjacent on ring structures, PA1 each R when present as a substituent is independently selected from hydrogen, alkyl, alkoxy, aryloxy, aryl, cyano, aralkyl, alkaryl, or the like; PA1 each R.sub.1 and R.sub.2 is independently selected from alkyl, aryl, aralkyl, or the like; 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.