A new N,N-dimethyl-d-glucosamine ligand has been developed for the copper-catalyzed Ullmann-type coupling of N-H heterocycles (e.g., indoles, benzimidazoles, pyrazoles and triazoles) with aryl halides. This method was accomplished not only featuring excellent yields, mild reaction conditions and simple operation, but also showing eco-friendly and broad-spectrum substrates, and could be widely used in the construction of N-aryl heterocyclic systems.

中文翻译：

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Ñ，Ñ二甲基d葡糖胺作为一种有效的配体的铜催化的Ullmann型偶合Ñ -H杂环与芳基卤

一个新的Ñ，Ñ二甲基d -葡糖胺的配体已用于铜催化的Ullmann型偶合开发Ñ -H杂环（例如，吲哚，苯并咪唑，吡唑和三唑）与芳基卤化物。该方法不仅收率高，反应条件温和，操作简单，而且具有环保和广谱底物的特点，可广泛用于N-芳基杂环体系的构建。