Tetrakis(fluoroaryl)borate•magnesium halide (Ar
4
BMgX) expressed by General Formula (1):
1
where each of R
1
-R
10
represents a hydrogen atom, a fluorine atom, a hydrocarbon group, or an alkoxy group, provided that at least one of R
1
-R
5
represents a fluorine atom and at least one of R
6
-R
10
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 (Ar
4
BZ) is produced by reacting treated Ar
4
BMgX 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 Ar
4
BMgX readily and efficiently, and a process of producing inexpensive Ar
4
BX efficiently.
四(
氟芳基)
硼酸镁卤化物(Ar
4
BMgX),通式(1)表示:
1
其中每个 R
1
-R
10
代表氢原子、
氟原子、烃基或烷氧基,条件是 R
1
-R
5
中的至少一个代表
氟原子,且 R
6
-R
10
代表
氟原子,X 代表
氯原子、
溴原子或
碘原子,n 代表 2 或 3、
用
羧酸的碱
金属盐和/或
羧酸的碱土
金属盐处理。然后,四(
氟芳基)
硼酸酯衍
生物(Ar
4
BZ)。
4
BMgX 与产生一价阳离子种子的化合物(例如
N,N-二甲基苯胺盐酸盐)反应,就可以制得四(
氟芳基)
硼酸酯衍
生物(Ar 4
BZ)。因此,可以提供一种纯化工艺来分离/去除 Ar
4
BMgX 中分离/去除杂质的纯化工艺,以及生产廉价 Ar
4
BX 的高效生产工艺。