Cyclic diphosphonites
US4694094A · kind A · utility
2Cited by
0References
5Claims
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Assignee
Inventors
Key dates
| Filing date | May 21, 1985 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | May 21, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/65842
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New organic compounds containing a phosphorus heterocycle of the phosphonite type, in which the phosphorus atom is connected on the one hand to an oxygen atom and on the other hand to an oxygen, sulphur or nitrogen atom, characterized by comprising two of such heterocycles, the two phosphorus atoms being connected by a hydrocarbon group. Preparation of these diphosphonites by the action of a tetrahalogeno- or tetraminodiphosphine upon a diol or an alcohol carrying a phenol, thiol, enol, acid or amine function.
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