Patent ID: 6818785
Filing Date: 2004-11-16
Classification: C07F

Abstract:
A method for purifying a fluoroaryl borane derivative and a bis (fluoroaryl) borane derivative comprising the steps of:precipitating the fluoroaryl borane derivative from a solution containing the fluoroaryl borane derivative, the bis (fluoroaryl) borane derivative, and a hydrocarbon solvent; performing first filtration so that the fluoroaryl borane derivative is isolated; precipitating the bis (fluoroaryl) borane derivative from a filtrate, that has been obtained by the first filtration, after performing the first filtration; and performing second filtration so that the bis (fluoroaryl) boron derivative is isolated, said fluoroaryl borane derivative being represented by Formula (1): where each of R1, R2, R3, R4, and R5 independently represents one of a hydrogen atom, a fluorine atom, a hydrocarbon group, and an alkoxy group, provided at least one of R1, R2, R3, R4, and R5 is a fluorine atom, and each of R6 and R7 independently represents a hydrogen atom or a hydrocarbon group, and M represents an oxygen atom and n represents 0, said bis (fluoroaryl) borane derivative being represented by Formula (2): where each of R1, R2, R3, R4, and R5 independently represents one of a hydrogen atom, a fluorine atom, a hydrocarbon group, and an alkoxy group, provided at least one of R1, R2, R3, R4, and R5 is a fluorine atom, and each of R6 and R7 independently represents one of a hydrogen atom and a hydrocarbon group, and M represents an oxygen atom and n represents 0.