Process for the preparation of bulky alkyldiarylphosphines and unsymmetrical aryldialkyl phosphines
US4668823A · kind A · utility
17Cited by
16References
9Claims
0Family size
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Key dates
| Filing date | Dec 30, 1983 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Dec 30, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/5068
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the selective production of bulky alkyldiarylphosphines and unsymmetrical dialkylarylphosphines comprising reacting a first Grignard reagent having a bulky alkyl group with an aryldichlorophosphine and thereafter and without isolating the resulting bulky alkylarylchlorophosphine intermediate, reacting said intermediate with a second Grignard reagent having a different, less bullky alkyl group or an aryl group to provide the product phosphine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.