Phosphate and phosphonate compounds including and derived from phosphate and/or phosphonate-containing hydrogen phosphonates
US5097057A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1989 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Sep 29, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/4075
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are disclosed novel phosphorus-containing compounds including and derived from hydrogen phosphonates. The compounds of the present invention can be prepared by reacting a hydrogen phosphonate with: (a) an ethylene derivative in a Michael reaction, (b) an amine or amide and formaldehyde in a Mannich reaction, (c) an aldehyde or ketone, (d) a halogen, (e) carbon tetrachloride and an alkylamine, and (f) carbon tetrachloride and a hydroxyphosphonate. Halophosphonates produced according to procedure (d) can also be used in reactions with (a) alkylamines and (b) hydroxyphosphonates or epoxides to produce the compounds of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.