Carboxylic acid accelerated formation of diesters
US5744637A · kind A · utility
2Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1996 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Dec 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/46
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention pertains to accelerating the rate of formation of 1,1-dicarboxylic esters from the reaction of an aldehyde with a carboxylic acid anhydride or a ketene in the presence of a non-iodide containing a strong Bronsted acid catalyst by the addition of a carboxylic acid at about one bar pressure and between about 0.degree. and 80.degree. C. in the substantial absence of a hydrogenation or carbonylation catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.