PURIFYING PROCESS OF TETRAKIS(FLUOROARYL)BORATE.MAGNESIUM HALIDE, TETRAKIS(FLUOROARYL)BORATE·ETHER COMPLEX AND PRODUCING PROCESS OF THE SAME, AND PRODUCING PROCESS OF TETRAKIS(FLUOROARYL)BORATE DERIVATIVE
US6380435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2001 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Feb 9, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F5/027
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tetrakis (fluoroaryl)borate.magnesium halide (Ar4BMgX) expressed by General Formula (1): where each of R1-R10 represents a hydrogen atom, a fluorine atom, a hydrocarbon group, or an alkoxy group, provided that at least one of R1-R5 represents a fluorine atom and at least one of R6-R10 represents a fluorine atom, X represents a chlorine atom, a bromine atom, or an iodide atom, and n represents 2 or 3,is treated with alkali metal salts of carboxylic acid and/or alkali earth metal salts of carboxylic acid. Then, a tetrakis(fluoroaryl)borate derivative (Ar4BZ) is produced by reacting treated Ar4BMgX with a compound generating monovalent cation seeds (for example, N,N-dimethylaniline.hydrochloride). Consequently, it has become possible to provide a purifying process of separating/removing impurities from Ar4BMgX readily and efficiently, and a process of producing inexpensive Ar4BX efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.