Process for the preparation of N-substituted aminomethylphosphonic acids
US4657705A · kind A · utility
17Cited by
16References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1985 |
| Grant date | Apr 14, 1987 |
| 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 substituted amine, urea or carbamate substrate compound with phosphorous acid and formaldehyde in an acidic medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.