Producing process of (fluoroaryl) borane compound and producing process of tetrakis (fluoroaryl) borate derivative
申请人:NIPPON SHOKUBAI CO., LTD.
公开号:EP0838466A2
公开(公告)日:1998-04-29
A fluoroaryl magnesium derivative expressed by General Formula (1):
where each of R1-R5 represents a hydrogen atom, a fluorine atom, a hydrocarbon group, or an alkoxy group while at least one of R1-R5 representing a fluorine atom, and Xa represents a chlorine atom, a bromine atom, or an iodine atom; and
boron halide expressed by General Formula (2) :
BXb3 (2)
where Xb represents a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom, are reacted with each other in a solvent (a) containing diethyl ether and/or tetrahydrofuran, after which the resulting reaction solution is added to a solvent (b) having a higher boiling point than diethyl ether and/or tetrahydrofuran while diethyl ether and/or tetrahydrofuran are distilled out. Consequently, it has become possible to obtain a (fluoroaryl)borane compound expressed by General Formula (3):
where each of R1-R5 represents a hydrogen atom, a fluorine atom, a hydrocarbon group, or an alkoxy group while at least one of R1-R5 representing a fluorine atom, Xb represents a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom, and n represents 2 or 3, from which magnesium halide produced as a by-product is separated and removed, selectively in a simple manner at a low cost.
通式(1)表示的
氟芳基
镁衍
生物:
其中 R1-R5 各代表一个
氢原子、一个
氟原子、一个烃基或一个烷
氧基,而 R1-R5 中至少有一个代表
氟原子,Xa 代表一个
氯原子、一个
溴原子或一个
碘原子;以及
通式(2)表示的卤化
硼:
BXb3 (2)
其中 Xb 代表
氟原子、
氯原子、
溴原子或
碘原子,在含有二
乙醚和/或
四氢呋喃的溶剂 (a) 中相互反应,然后将生成的反应溶液加入沸点高于二
乙醚和/或
四氢呋喃的溶剂 (b) 中,同时蒸馏出二
乙醚和/或
四氢呋喃。因此,可以得到通式(3)表示的(
氟芳基)
硼烷化合物:
其中 R1-R5 各代表一个
氢原子、一个
氟原子、一个烃基或一个烷
氧基,而 R1-R5 中至少有一个代表
氟原子;Xb 代表一个
氟原子、一个
氯原子、一个
溴原子或一个
碘原子;n 代表 2 或 3,从该化合物中可以简单、低成本、有选择性地分离和去除作为副产品产生的卤化
镁。