A catalyst system derived from commercially available Cu(NO₃)₂.3H₂O and 2,5- dihydroxyterephthalic acid is applied to the homocoupling reaction of arylboronic acids. This transformation provides a convenient approach to symmetrical biaryls with good to excellent yields (39%- 95%), and exhibits good functional group compatibility. Furthermore, biaryl can be prepared in gram quantities in good yield.

中文翻译：

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2,5-二羟基对苯二甲酸促进Cu（NO ₃）₂ .3H ₂ O催化芳基硼酸的均偶联反应

将衍生自市售的Cu（NO ₃）₂ .3H ₂ O和2,5-二羟基对苯二甲酸的催化剂体系用于芳基硼酸的均偶联反应。这种转化为对称的联芳基化合物提供了一种方便的方法，具有良好至极好的收率（39％-95％），并具有良好的官能团相容性。此外，联芳基可以以克的量高收率地制备。