1,2-Dicarba-closo-dodecaboranes (o-carboranes) and naphthalenes have potential value as components or building blocks for supramolecular systems, We have efficiently synthesized 1-(1,2-dicarba-closo-dodecaboran-1-yl) naphthalene and 2-(1,2-dicarba-closo-dodecaboran-1-yl) naphthalene derivatives by employing three preparative methods: cyclization of the corresponding acetylenes with decaborane(14), an Ullmann-type coupling reaction of carboranes with aryl halide, and the aromatic nucleophilic substitution (SNAr) reaction of aryl-o-carboranes with nitrophenyl halide, The optimum conditions of each method for synthesis of the title compounds were also investigated.
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