Sequential Nucleophilic−Electrophilic Reactions Selectively Produce Isomerically Pure Nona‐B‐Substituted o‐Carborane Derivatives

Nine equal substituents on the intensively studied o ‐carborane have been obtained for the first time by a combined nucleophilic‐electrophilic reaction sequence. Iodine and methyl groups have been introduced to prove the generality of the method. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)