Naphthenic hydrocarbon additives for diaryl phosphide salt formation
US8674142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2010 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Oct 3, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2231/64
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to the use of polycyclic aromatic hydrocarbons (PAHs) such as naphthalene and its alkyl, aryl, or heteroatom substituted analogs, that act as catalysts in the presence of an alkali metal (Li, K, Na) for the reduction of electron-deficient and electron-rich triaryl phosphines to their corresponding alkali metal diaryl phosphide salts. The process is also useful for the catalysis of triaryl phosphine chalcogen adducts such as the sulfides, oxides, and selenides, diaryl(halo)phosphines, triaryl phosphine-borane adducts, and tetra-aryl bis(phosphines) that can also be reduced to their corresponding alkali metal diaryl phosphide salts. The invention also relates to small molecule PAHs and polymer tethered PAHs naphthenics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.