Diiodobenzenes were employed in palladium‐catalyzed one‐pot sequential reactions with propiolic acid and aryl halides to provide the corresponding diarylalkynyl benzenes. The combination of Pd(PPh₃)₄ (10 mol %) and DBU (5.0 equiv) gave optimal results in the sequence. Reactions with 1,2‐diiodobenzene gave higher yields than those utilizing 1,3‐ and 1,4‐diiodobenzenes. Furthermore, benzenes bearing electron‐donating substituents gave higher yields than those with electron‐withdrawing substituents.

中文翻译：

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二碘代苯，丙酸和芳基卤化物的顺序一锅偶联反应用于合成二芳基炔基芳烃

二碘代苯与丙酸和芳基卤化物在钯催化的一锅顺序反应中使用，以提供相应的二芳基炔基苯。Pd（PPh ₃）₄（10 mol％）和DBU（5.0当量）的组合按顺序给出了最佳结果。与1,2-二碘代苯的反应比使用1,3-和1,4-二碘代苯的反应具有更高的收率。此外，带有给电子取代基的苯的收率要高于带有吸电子取代基的苯。