Process for the preparation of N-substituted aminomethylphosphonic acids
US4804499A · kind A · utility
6Cited by
10References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 23, 1985 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Sep 23, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/3813
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of an N-substituted aminomethylphosphonic acid comprising reacting a 2,5-diketopiperazine compound with phosphorous acid and formaldehyde in an acidic medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.