tɹˈɪs pˈɛntɐflˌʊɹɹəfˌiːnaɪl bˈoːɹeɪn ɪz pɹɪpˈɛɹd jˈuːzɪŋ ɐ ɡɹˈɪɡnɑːɹd ɹɪˈeɪdʒənt dᵻɹˈaɪvd fɹʌm bɹˈɑːmoʊpˌɛntɐflˌʊɹɹoʊbˌɛnziːn:
Tris(pentafluorophenyl)borane is prepared using a Grignard reagent derived from bromopentafluorobenzene: