Rhodium-Catalyzed Direct and Selective <i>ortho</i>
C−H Chalcogenation of <i>N</i>
-(Hetero)aryl-7-azaindoles
作者:Tripta Kumari Vats、Aniket Mishra、Indubhusan Deb
DOI:10.1002/adsc.201800090
日期:2018.6.15
catalyzed synthesis of chalcogenated N‐aryl‐7‐azaindoles/azaindolines has been developed through N‐directed ortho Csp2−H activation in presence of silver triflate and silver carbonate in 1,4‐dioxane using dichalcogenides. We have established this methodology as being efficient, highly regioselective and scalable, having a broad substrates scope. Through this route, a range of substrates have furnished
Visible‐light‐mediateddirect sp3 CHamination of benzocyclic amines via α‐aminoalkyl radicals by using photoredox catalysts is described here. The obtained N,N‐acetals were also successfully applied for carbon–carbon bond forming reactions with carbon nucleophiles. The procedure is suitable for a late‐stage modification of CH bonds to CC bonds.