A novel and efficient synthesis of 2-bromo(chloro)-3-selenyl(sulfenyl)indoles through tandem reactions of 2-(gem-dibromo(chloro)vinyl)-N-methylsulfonylanilines with diselenides and disulfides in the presence of t-BuOLi and I2 (10 mol%) in DMSO was developed. The reactions generated the desired products in good yields with high regio-selectivity under transition-metal-free conditions in one-pot.
在 t-BuOLi 存在下,通过 2-(gem-二
溴(
氯)
乙烯基)-N-甲基磺酰
苯胺与二
硒化物和二
硫化物的串联反应,新型高效合成 2-
溴(
氯)-3-
硒基(
硫基)
吲哚开发了 I2 (10 mol%) 的
DMSO 溶液。该反应在不含过渡
金属的条件下一锅法以良好的收率和高区域选择性生成了所需的产物。