Process for producing tetrakis(
This invention provides processes for forming halomagnesium tetrakis( F aryl)borates, which processes comprise bringing together, in an anhydrous liquid organic medium, at least one boron trihalide; at least one F aryl Grignard reagent; and at least one copper compound. Also provided are processes for forming halomagnesium tetrakis( F aryl)borates, which processes comprise bringing together, in an anhydrous liquid organic medium, at least one boron trihalide; at least one copper compound; magnesium metal; and at least one polyhaloaromatic compound.
1. A product mixture comprising a liquid organic medium, magnesium salts, copper compounds, and at least one halomagnesium tetrakis( F aryl)borate.
2. A product mixture as in claim 1 wherein the halomagnesium tetrakis( F aryl)borate is chloromagnesium tetrakis(pentafluorophenyl)borate, bromomagnesium tetrakis(pentafluorophenyl)borate, chloromagnesium tetrakis(heptafluoronaphthyl)borate, or bromomagnesium tetrakis(heptafluoronaphthyl)borate.
3. A product mixture as in claim 1 which further comprises an F aryl Grignard reagent, and wherein the F aryl Grignard reagent is pentafluorophenyl chloromagnesium, pentafluorophenyl bromomagnesium, heptafluoronaphthyl chloromagnesium, or heptafluoronaphthyl bromomagnesium.