A convenient method for the rapid construction of indolo[2,3-b]indoles has been developed. This cascade reaction involving condensation, dehydroaromatization, and oxidative annulation was achieved in a one-pot TMSI/DMSO system, providing a diversity of functionalized indolo[2,3-b]indoles in satisfactory yields under facile metal-free conditions. The present protocol provides a straightforward approach to access structurally valuable indolo[2,3-b], indoles.

中文翻译：

---

好氧级联脱氢芳构化/氧化环合法无金属合成吲哚[2,3-b]吲哚

已经开发了一种快速构建吲哚[2，3-b]吲哚的简便方法。该反应涉及缩合，脱氢芳构化和氧化环化反应，是通过一锅TMSI / DMSO系统完成的，在无金属条件下以令人满意的收率提供了多种官能化的吲哚[2,3-b]吲哚。本协议提供了一种直接的方法来访问结构上有价值的吲哚[2，3-b]吲哚。