Hydrogenation of enzymatically-produced glycolic acid/aminomethylphosphonic acid mixtures
US5180846A · kind A · utility
1Cited by
23References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Nov 6, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/3813
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides a process for the production of N-(phosphonomethyl)glycine, also known as glyphosate. The process comprises hydrogenating a mixture containing glyoxylic acid and aminomethylphosphonic acid, the mixture having been enzymatically prepared in situ by the reaction of glycolic acid and oxygen in an aqueous solution containing aminomethylphosphonic acid and the enzymes glycolate oxidase and catalase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.