Tertiary phosphines and their methods of preparation
US7608713B2 · kind B2 · utility
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29Claims
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Key dates
| Filing date | Mar 8, 2004 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Nov 7, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/5059
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tertiary phosphines are prepared by reacting a phosphine (PH3 or a primary or secondary phosphine) with a cyclic alpha,beta-unsaturated carbonyl compound having no more than one C═C double bond conjugated with a carbonyl group. The inventive tertiary phosphines can have R groups that are the same or different. The inventive tertiary phosphines may be used as ligands for metal catalysts or as starting materials for preparing phosphonium salts or ylids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.