Purification of N,N-Dialkylcarbamoylmethylphosphine oxide
US5068426A · kind A · utility
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16Claims
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Inventor
Key dates
| Filing date | Jan 19, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Jan 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/5304
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Crude organic solutions of N,N-dialkylcarbamoylmethylphosphine oxide compounds can be purified by treatment with a first row transition metal salt to form a complex which can be treated to regenerate a purified solution of the compound. The first row transition metal can be selected from the monobasic acid salts of zinc, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.