An efficient and practical method for the synthesis of substituted chroman-4-ones was developed. The corresponding products can be obtained with moderate to high yields at room temperature. Control experiments suggested that this transformation was likely to proceed via a radical pathway. The preliminary activity test showed that some of the compounds had moderate to high antibacterial activity.

中文翻译：

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在无金属条件下高价碘介导的邻（烯丙氧基）芳基醛和N-羟基邻苯二甲酰亚胺（NHPI）的自由基环化

开发了一种高效，实用的取代苯并吡喃-4-酮的合成方法。可以在室温下以中等至高产率获得相应的产物。对照实验表明，这种转化很可能通过自由基途径进行。初步活性测试表明，某些化合物具有中等至较高的抗菌活性。