The first nickel-catalyzed method for the borylation of carbon–hydrogen bonds in arenes and indoles is described. The use of an N-heterocyclic carbene ligand is essential for an efficient reaction, with an N-cyclohexyl-substituted derivative being optimal. This method is readily applied to the gram scale synthesis of 2-borylindole.
描述了一种镍催化的新方法,用于芳烃和吲哚中碳-氢键的硼化反应。使用N-杂环卡宾配体对于高效反应至关重要,其中N-环己基取代衍生物是最佳选择。这种方法可轻松应用于克制合成2-硼基吲哚的克拉姆级规模。