An efficient and eco-friendly protocol for the KI-catalyzed regioselective sulfenylation of 4-anilinocoumarins with Bunte salts was established. The reaction worked smoothly under metal-free conditions and afforded a wide range of sulfenylated 4-anilinocoumarins with potential bioactivity in moderate to excellent yields. This method would expand the still limited scope of synthesis methods for C–S bond formation using Bunte salts.

中文翻译：

---

使用Bunte盐的无过渡金属KI催化4-苯胺香豆素的区域选择性亚磺酰基化

建立了一种高效且环保的方案，用于使用丁苯盐对KI催化4-苯胺香豆素的区域选择性亚磺酰基化。该反应在无金属的条件下顺利进行，并以中等至极好的收率提供了多种具有潜在生物活性的亚磺酰化4-苯胺香豆素。这种方法将扩大使用邦特盐形成C–S键的合成方法的有限范围。