Readily available selenium powder was chosen as an ideal selenium source to construct a series of bis(arylethynyl) selenium compounds in moderate to excellent yields through the activation of terminal alkyne C–H bond mediated by AgF. The reaction has the advantages of easy operation, good substrate scope and high atom economy. In addition, tellurium powder was also successfully applied to this system for the construction of bis(arylethynyl) tellurides under identical conditions.

中文翻译：

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银介导的末端炔烃的活化：构建双乙炔硒化物和碲化物的策略

选择现成的硒粉作为理想的硒源，可以通过活化AgF介导的末端炔烃C–H键，以中等至极好的收率构建一系列双（芳基乙炔基）硒化合物。该反应具有易于操作，良好的底物范围和高原子经济性的优点。此外，碲粉也已成功应用于该系统，用于在相同条件下构建双（芳基乙炔基）碲化物。