Production process of a fluoroaryl magnetic derivative and a process of producing a compound (fluoroaryl) borane.

FIRST invention relates to a process for preparing aryl magnesium DERIVATIVE FLUORINATED by reacting a fluorinated aromatic compound, with a halogenated hydrocarbon and magnesium ETHEREAL in a solvent or a mixture thereof with a hydrocarbon. According to this procedure, the compound of interest can be prepared efficiently in a single phase reaction at low cost. DERIVATIVES OBTAINED aryl magnesium are useful as reagents TO INTRODUCE IN SEVERAL GROUPS AROMATICOS FLUORINATED ORGANIC COMPOUNDS. THE SECOND invention relates to a PREPAREDNESS boron compounds (aryl fluoride) procedure, by the addition of a solution ETEREA of a derivative of aryl magnesium fluoride and a solution ETEREA boron halide, A hydrocarbon having a higher boiling point AL SOLVENT, and by reacting the aryl magnesium halide BORO WITH SIMULTANEOUSLY distilling off the solvent. THAT MAKES LAPREPARACION PROCEDURE OF INTEREST boron compounds selectively and at low cost, thus being industrially advantageous. Boron compounds obtained are useful as cocatalysts for metallocene catalysts.