Synthesis of Indole‐Fused 1,4‐Diazepinones via Photoredox‐Catalyzed Cascade Cyclization Reaction
作者:Elisa Brambilla、Silvia Meraviglia、Edoardo Moneta、Donatella Nava、Silvia Rizzato、Giorgio Abbiati、Valentina Pirovano
DOI:10.1002/adsc.202300708
日期:2023.11.21
A photoredox-promoted approach for the synthesis of [1,4]diazepino[1,7-a]indol-6(7H)-ones starting from N-indolyl phenylacrylamides and aroyl chlorides as radical source is reported. This method, that involves a cascade radical addition on C−C double bond followed by intramolecular cyclization at indole C2-position, affords two diastereomeric indole-fused 1,4-diazepinones characterized by a N−C(aryl)
报道了一种以N-吲哚基苯基丙烯酰胺和芳酰氯为自由基源合成[1,4]二氮杂[1,7- a ]吲哚-6(7 H )-酮的光氧化还原促进方法。该方法涉及 C−C 双键上的级联自由基加成,然后在吲哚 C2 位进行分子内环化,得到两种非对映异构体吲哚稠合 1,4-二氮杂酮,其特征在于 N−C(芳基) 轴向手性,产率范围从 51% 到 99%。