N-Sulfonyl-1,2,3-triazoles react with cyclic N,N’-diaryl aminals under dirhodium catalysis to generate, after ylide formation and subsequent ring opening, original imino-iminium intermediates. Quite a few recent synthetic applications have been reported using these electrophilic moieties, in particular series of cascade reactions forming unprecedented polycyclic polyaza derivatives.

中文翻译：

---

Rh（II）催化N-磺酰基-1,2,3-三唑与缩醛的缩合反应

N-磺酰基-1,2,3-三唑类化合物在环状碘催化下与环状N，N'-二芳基缩醛反应生成内酯并随后开环后，生成原始的亚氨基-亚胺基中间体。使用这些亲电子部分，特别是一系列级联反应，形成了前所未有的多环多氮杂衍生物，已经报道了许多最近的合成应用。