Method for purifying tetrakis(fluoroaryl)borate compounds or tris(fluoroaryl)borate compounds
US6281389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1999 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Sep 7, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F5/027
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A solution containing an organic solvent and a compound including impurities, represented by, for example, general formula (1) ##STR1## (wherein R.sub.1 to R.sub.10 independently represent H, F, a hydrocarbon group or an alkoxy group, at least one of R.sub.1 to R.sub.5 is F, at least one of R.sub.6 to R.sub.10 is F, M is H, alkali metal, alkaline earth metal or alkaline earth metal halide, n is 3 or 4, and m is 2 when M is an alkaline earth metal, or m is 1 when M is the other) is mixed with water. The purified compound is reacted with a compound which forms a monovalent cation seed to prepare a derivative. Thus, a purifying method capable of efficiently and easily separating and removing colored components contained in tetrakis(fluoroaryl)borate compounds can be provided. Moreover, it is possible to provide a method capable of preparing a highly-pure tetrakis(fluoroaryl)borate derivative efficiently and at low costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.