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Highly efficient heterogeneous copper-catalyzed decarboxylative cross-coupling of potassium polyfluorobenzoates with aryl halides leading to polyfluorobiaryls

机译:多氟苯甲酸钾与芳基卤化物的高效异质铜催化脱羧交叉偶联,生成多氟联芳基

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The heterogeneous decarboxylative cross-coupling reaction of potassium polyfluorobenzoates with aryl iodides and bromides was achieved in diglyme or DMAc at 130 or 160 °C in the presence of 10–20 mol% of a 1,10-phenanthroline-functionalized MCM-41-immobilized copper(I) complex, [MCM-41-Phen-CuI], yielding a variety of polyfluorobiaryls in good to excellent yields. This heterogeneous copper(I) complex could easily be prepared via a simple procedure from commercially readily available and inexpensive reagents, exhibited the same catalytic activity as the homogeneous CuI/Phen system, and was recovered by filtration of the reaction solution and recycled at least 8 times without significant loss of catalytic activity.
机译:多氟苯甲酸钾与芳基碘化物和溴化物的异质脱羧交叉偶联反应是在130或160°C的二甘醇二甲醚或DMAc中,在10–20 mol%的1,10-菲咯啉官能化的MCM-41固定化的情况下完成的铜( I )络合物[MCM-41-Phen-CuI],可产生多种多氟联芳基化合物,收率良好或优异。这种异质铜( I )络合物可以很容易地通过 简单方法从市售易得的廉价试剂制备,具有与均相CuI / Phen系统相同的催化活性,并通过过滤反应溶液进行回收,并循环至少8次,而催化活性没有明显损失。

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