The palladium-catalyzed direct arylation of 1,2,4-oxadiazoles proceeds efficiently at low catalyst loading (0.5 to 1 mol %) with the decisive assistance of sterically constrained ferrocenyldiphosphane ligands. This protocol tolerates electron-donating and electron-withdrawing substituents on the (heteroaryl)aryl halide.

中文翻译：

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双(二异丙基膦)二茂铁促进的1,3,4-恶二唑与芳基氯的直接钯催化C5-芳基化


在空间约束的二茂铁基二膦配体的决定性帮助下，钯催化的 1,2,4-恶二唑的直接芳基化反应在低催化剂负载量（0.5 至 1 mol %）下有效进行。该方案允许（杂芳基）芳基卤化物上的给电子和吸电子取代基。