Prep. of boron [fluoroaryl] compound
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;...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
16.05.2001
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | 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 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. |
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Bibliography: | Application Number: CN20001027046 |