Syntheses and lipophilicities of tetraarylborate ions substituted with many trifluoromethyl groups
Syntheses were investigated using various tetraarylborate ions with a large number of trifluoromethyl groups: tetrakisborate; tetrakisborate; tetrakisborate; and tetrakisborate ions.The preparation of Grignard reagents and the subsequent reaction with boron trifluoride etherate are importantsteps for a higher yield and easier isolation of the product.Sodium- and tetramethylammonium salts of these borate ions are soluble in halocarbon solvents such as dichloromethane, chloroform and 1,2-dibromotetrafluoroethane.