AbstractA rhodium(III)‐catalyzed C−H activation/[4+1] annulation of 2‐aryl‐3H‐indoles and CF3‐substituted imidoyl sulfoxonium ylides (TFISYs) has been achieved, producing a wide variety of trifluoroacetimidoyl‐substituted 11H‐isoindolo[2,1‐a]indoles in 51–86% yields. The cascade reaction involves C−H imidoylmethylation, tautomerization and AgOAc‐mediated C−N bond formation sequence. The reaction could be scaled up to 2 mmol scale.
摘要 在铑(III)催化下,实现了 2-芳基-3H-吲哚和 CF3 取代的亚胺酰亚磺酰基(TFISYs)的 C-H 活化/[4+1]环化反应,以 51-86% 的产率生成了多种三氟乙酰亚胺酰取代的 11H-异吲哚并[2,1-a]吲哚。级联反应包括 C-H 亚胺酰甲基化、共聚和 AgOAc 介导的 C-N 键形成顺序。该反应的规模可扩大到 2 毫摩尔。