Process for preparing n-alkylated aminoalkylphosphonates
US4083897A · kind A · utility
0Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1976 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Nov 10, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/4006
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
N-Alkylated aminoalkylphosphonates having the structural formula: ##STR1## where R.sup.1,R.sup.4 and R.sup.5 are straight or branched lower alkyl having one to five carbon atoms; R.sup.2 and R.sup.3 are selected from the group consisting of straight or branched lower alkyl having one to five carbon atoms and hydrogen and n is the integer 1 or 2, are prepared with acid numbers from about 5 to about 15 by contacting an amine and a phosphite and then adding this to an aqueous solution of an aldehyde or ketone. The reaction temperature is kept below about 70.degree. C. and water is removed under reduced pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.