Method of producing triarylborane
AssigneeTosoh Akzo Corporation
InventorsYoshihiko Ikeda, Takeo Yamane, Eiichi Kaji, Kenji Ishimaru
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Abstract
A method of producing a high-purity triarylborane with high yield by reacting, in a solvent inert to the reaction product, a 1.0-8.0 mol/L boron halide solution with a 0.1-3.0 mol/L aryl magnesium halide solution in a straight chain ether solvent, where the molar ratio of aryl magnesium halide to boron trihalide is 3.1-3.5 to 1.0, respectively, and then the straight chain ether solvent is distilled from the reaction mixture. Distillation crystallizes out the halogenated magnesium salt which is produced as a by-product, increasing the recovery rate of the product.
Claims11
A method of producing a triarylborane, comprising the steps of:
- (1) reacting a 1.0-8.0 mol/L boron trihalide solution in an inert hydrocarbon or hydrocarbon/ether solvent with a 0.1-3.0 mol/L aryl magnesium halide solution in an ether solvent, where the molar ratio of aryl magnesium halide to boron trihalide is 3.1-3.5 to 1.0, respectively, to form a reaction mixture containing a triarylborane and a halogenated magnesium salt;
- (2) distilling said ether solvent from said reaction mixture;
- and
- (3) removing said halogenated magnesium salt from said mixture.
Dependencies are inferred from the claim text.