benzoheteroles in good to high yields. Moreover, a three-component coupling of 1,6-enynols, aryldiazonium salts, and Na2S2O5 (as an SO2 surrogate) has been achieved to deliver benzoheterole derivatives in moderate to good yields. Of note, a scalable reaction and late-stage synthetic transformations were successfully demonstrated. A plausible mechanism is also presented based on the existing experimental results
Benzoheteroles 是药物
化学中有价值的支架,但 3-
乙烯基 benzoheterole 类似物的直接合成仍未探索。一种合理设计的新型含 1,6-烯炔的炔
丙醇已制备用于 3-烯基苯并杂环的模块化合成。实现了 1,6-烯醇与亚
磺酸钠的
银催化级联自由基磺酰化环化反应,以高收率获得各种 2,3-二取代苯并
杂环化合物。此外,1,6-烯醇、芳基重氮盐和 Na 2 S 2 O 5的三组分偶联(作为 SO 2替代品)已经实现以中等到良好的收率提供苯并杂环衍
生物。值得注意的是,成功展示了可扩展的反应和后期合成转化。还根据现有实验结果和对照实验提出了一种似是而非的机制。