Process for the preparation of protected phosphine oxides
US5298663A · kind A · utility
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3References
13Claims
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Key dates
| Filing date | Mar 23, 1993 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Mar 23, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a protected phosphine oxide which comprises reacting a phosphinate ester having a protecting group on the phosphorus atom with an organomagnesium halide or an organolithium compound at a temperature of -70.degree. C. to 65.degree. C. Protected phosphine oxides so prepared are useful intermediates for the preparation of tertiary phosphine oxides and acylphosphine oxide photoinitiators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.