The first copper-catalyzed cross-coupling reaction between benzyl boronic acid pinacol ester and α,β-unsaturated carboxylic acids was described. The ready availability of the starting materials and excellent E selectivity make this protocol a safe and operationally convenient strategy for the efficient synthesis of (E)-prop-1-ene-1,3-diyldibenzene derivatives.

中文翻译：

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α，β-不饱和羧酸与苄基硼酸频哪醇酯的直接脱羧偶联合成（E）-丙-1-烯-1,3-二基二苯衍生物

描述了苄基硼酸频哪醇酯与α，β-不饱和羧酸之间的首次铜催化的交叉偶联反应。起始原料的易得性和出色的E选择性使该方案成为有效合成（E）-丙-1-烯-1,3-二基二苯衍生物的安全且操作便捷的策略。