An efficient protocol for the cobalt‐catalyzed acyloxylation of arenes and alkenes with the assistance of an 8‐aminoquinolyl auxiliary group is reported. In this transformation, benzoic acids, alkenyl acids, and aliphatic acids could be readily involved to afford structurally diverse esters. It is worth noting that the silver sulfate (Ag₂SO₄) oxidant is renewable and the directing group could be removed and recycled. The strategy represents the first successful example of transition metal‐catalyzed acyloxylation of alkenyl carboxamides C(sp²)−H bonds with carboxylic acids.

中文翻译：

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钴催化直接对芳烃和烯烃进行正酰氧基化

据报道，借助8-氨基喹啉基辅助基团，钴可有效催化芳烃和烯烃的酰氧基化反应。在该转化中，苯甲酸，烯基酸和脂族酸可以容易地参与以提供结构上多样化的酯。值得注意的是，硫酸银（Ag ₂ SO ₄）氧化剂是可再生的，并且可以除去和回收导向基团。该策略代表了过渡金属催化的烯基羧酰胺C（sp ²）-H键与羧酸的酰氧基化的第一个成功实例。