Preparation of aromatic aldehydes
US4942240A · kind A · utility
2Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1987 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Apr 28, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Aromatic aldehydes are more rapidly produced by reacting hydrogen/carbon monoxide admixture with an aromatic halide in the presence of a noble metal-based catalyst, a tertiary nitrogenous base and, if necessary, a noble metal complexing agent, e.g., a phosphine or phosphite, wherein the concentration of said tertiary nitrogenous base, expressed in moles per liter of reaction mixture, is maintained at a value of at least two moles/liter over the course of the reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.