Amine promoted catalytic hydrogenation of carboxylic acid anhydrides to lactones or esters
US4485246A · kind A · utility
7Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1982 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Oct 29, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D315/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The rate of selective hydrogenation of carboxylic acid anhydrides to esters or lactones in the presence of a ruthenium organophosphorous catalyst which contains or liberates a hydrogen halide during the hydrogenation, is improved by providing in the reaction medium prior to or during the hydrogenation a basic amino compound to remove the hydrogen halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.